Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Summary
Fast Facts
Snowfall Maps
Satellite
Weather Observations
Wind Gusts
NWS Products

Summary

On December 24, 2009, the ingredients for a powerful winter storm converged on the Southern Plains. Cold air deepened from the north, Gulf moisture increased from the south, and low pressure intensified rapidly, leading to severe, blustery winds. With the storm developing so quickly, the atmosphere responded with very strong lifting and heavy precipitation. Rain changed to sleet and then snow, resulting in the most widespread blizzard conditions to affect Oklahoma and Western North Texas in decades.

The record setting storm produced 4 to 8 inches of snow across Wichita Falls up through Oklahoma City and Stillwater as seen in Figure 1. Local snow totals exceeded ten inches, including the most snow ever recorded in a single day at both Oklahoma City and Wichita Falls. For several hours, winds sustained at 40 mph and gusting to 60 mph created whiteout conditions with visibility of less than 100 feet. The winds built snow drifts at least three feet deep, and many vehicles had to be abandoned after becoming stuck in the snow. The number of stalled cars littering the roads and highways made travel impossible even for vehicles better equipped for travel in the snow.

Figure 1: Storm Total Snowfall Amounts for the December 24, 2009 Christmas Eve Blizzard

While some winter storms are predictable days ahead of time, the full brunt of the Christmas Eve Blizzard was not recognizable until the hours leading up to and during its onset. The evolution and intensity of most storms is sensitive to the timing and strength of key features. This storm appeared to be even more sensitive than most, as was reflected in the wide range of plausible outcomes forecast by numerical models and human forecasters in the days leading up to the event. It was first thought that there would be much wind and cold, but only a few hours of precipitation, some of which would not be snow.

By the morning of the 23rd, it appeared the storm would last a bit longer and produce more snow, and the National Weather Service in Norman issued a Winter Storm Watch for central and northern Oklahoma. Later that day, however, satellite loops and observations provided evidence that the storm was tracking even slower and farther south. The NWS Norman upgraded the watch to a Winter Storm Warning for 4 to 6 inches of snow and strong winds. The Warning was soon expanded to include the rest of the NWS Norman forecast area, some 12 to 18 hours before the worst of the storm arrived. Expectations continued to increase early the morning of the 24th when the NWS Norman raised forecast snowfall amounts, predicting widespread 4 to 8 inches from southwest to northeast, and a sizeable swath of 8 to 11 inches embedded in parts of central and southern Oklahoma.

Forecasters then watched as the storm system moved out of the Southwestern United States and a pronounced low pressure center formed in north Texas. Just north of the low, in western north Texas and southwest Oklahoma, rain transitioned to freezing rain, sleet, and then snow. In the pre-dawn hours, the low pressure alone caused winds to increase above 35 mph with gusts above 50 mph. Then after sunrise a strong arctic front dove in from the northwest, carrying with it rapidly falling temperatures and severe winds.

Recognizing the life threatening conditions that were about to occur, the NWS Norman upgraded its Winter Storm Warning to a Blizzard Warning - a rare occurrence - to highlight the fact that an unusual life-threatening event was unfolding. A blizzard represents some of the most dangerous weather conditions that can occur anywhere on earth. Winds gusted up to 60 mph from midday through the afternoon, and wind chill temperatures dropped to between zero and ten degrees above zero. Blizzard conditions affected the vast majority of northern, central, and southwest Oklahoma, and all of western north Texas, for at least 5 to 7 hours. Commerce was shut down, and nearly all forms of travel were brought to a standstill.

Gusty winds and blowing snow continued to reduce visibility well into the evening, but precipitation finally diminished from west to east as the mature storm exited into Arkansas and Missouri. In fact, clear skies were observed in Oklahoma and western north Texas only hours after precipitation had ended. More work is needed in order to place the Christmas Eve Blizzard in historical perspective, but events such as this are rare in the Southern Plains, and even rarer outside of northwest Oklahoma. This storm produced some of its heaviest snowfall near Oklahoma City and Wichita Falls.

The impacts of the storm were significant. There were at least nine fatalities in Oklahoma related to the blizzard, and hundreds of injuries. Interstates 35, 40 and 44, as well as the turnpikes, numerous roads and highways were shut down during the height of the storm. The National Guard was called in to rescue stranded motorists, and hundreds of people spent Christmas Eve night in one of the numerous emergency shelters set up across the area. Hundreds of abandoned vehicles littered interstates, highways and even local streets for days after the blizzard. Airports closed, leaving many holiday travelers stranded. Numerous power outages were reported. You can see more details on the storm's impacts at the Oklahoma Department of Emergency Management's website.

Many people who ventured out in the storm escaped with their lives, but some were not so fortunate. It is important to note that even after becoming stuck during a blizzard, it is still safest to remain with your vehicle until a rescue vehicle is able to drive you to shelter. Your car offers protection from bitter cold wind chill temperatures, and someone wandering, even in familiar territory, can become disoriented during blizzard conditions. In the Northern Plains, where people are more accustomed to blizzards, most people carry a survival kit that includes, among other things, blankets, non-perishable and high energy food such as granola bars, and a brightly colored flag to tie to the car’s radio antenna as a distress signal. Of course the best way to stay safe is to stay home until the storm has passed. But for more information on surviving dangerous winter weather, visit https://www.weather.gov/media/safety/Winter_Storms2008.pdf.

Fast Facts

For several hours, winds sustained at 40 mph and gusting to 60 mph created whiteout conditions with visibility of less than 100 feet.

The Oklahoma Highway Patrol (OHP) reported 9 fatalities attributed to the winter storm. All died in storm related traffic collisions on December 24-25, 2009.

According to the Oklahoma Department of Emergency Management, EMSA responded to 1,079 emergency medical calls in the Oklahoma City area on December 24-27, 2009. Included in that number were 149 falls and 92 motor vehicle crashes. During the four-day period, paramedics transported 728 patients to hospitals for continued care.

Total damage from the blizzard exceeded $18 million across Oklahoma.

Winter Weather Safety Information

Winter Weather Safety information

Web Pages and Reports Related to the December 24, 2009 Blizzard

Oklahoma Department of Emergency Management Situation Update web page for the December 24, 2009 blizzard

Storm Prediction Center Storm Report for December 24, 2009

SPC Severe Weather Event Review for December 24, 2009

Snowfall Maps

The images below were created using ArcGIS software, and multiple days of snowfall reports from the national cooperative observer network. Stations that had missing data were excluded from the analysis. You can see a clearly defined band of at least 5 inches of snow stretched from western North Texas through central Oklahoma. The grand total for the event was about 52 inches of snow in western South Dakota where winds sloping up the Black Hills helped increase snow totals.

The top row of images are from a national perspective, and the bottom row is a "regional zoom". The images on the right have small black points where the observations were taken, and the images on the left do not.

National View without Observation Points	National View with Observation Points
Regional View without Observation Points	Regional View with Observation Points

Satellite Imagery

The images contained in this web page were provided courtesy of Scott Bachmeier at the Cooperative Institute for Meteorological Satellite Studies (CIMSS) and can be found within the CIMSS Satellite Blog.

Below is is an infrared (IR) satellite image (What is that?) that shows a heavy snow band focused on central Oklahoma at about 5 PM on Christmas Eve. The yellow icons are the "present weather". The asterisks indicate snow - the more asterisks, the heavier the snow.

The image below is a high resolution satellite image in false color so that snow and ice cover is highlighted in pink. The snow cover image was taken on Christmas Day, or after the storm had departed Oklahoma. You can click on either image for a larger version.

A different false color image of the snow cover is available below.

The following image fades between a false color image, and a visible satellite image (basically a bird's eye view of the ground from space).

Satellite Animations

A loop of infrared (IR) satellite images for the entire event is available below.

A loop of water vapor satellite images for the entire event is available below.

Weather Observations

Many surface observations sites across the area recorded some impressive wind gusts, visibility reductions, and snow rates during the blizzard. We have provided a listing of hourly, and interesting intermediate observations, for both Oklahoma City (KOKC) and Wichita Falls (KSPS) during the event below. Observations that meet blizzard criteria with both winds (35 mph frequent gusts or sustained) and visibility (1/4 mile or less) will have the "weather" cell highlighted in pink/dark pink.

Oklahoma City (OKC) - December 24, 2009
Time (CST)	Temp (°F)	Dew (°F)	RH (%)	Wind Speed (mph)	Peak Gust (mph)	Visibility (mi)	Weather
3:52 AM	35	29	78	35	40	8	Light Rain
4:52 AM	34	29	81	30	41	5	Light Rain
5:52 AM	34	28	78	37	46	9	Light Rain
6:52 AM	33	27	78	31	47	9	Light Rain
7:52 AM	32	27	82	37	44	4	Light Freezing Rain
8:21 AM	31	27	85	35	45	1.5	Freezing Rain and Sleet
8:37 AM	31	27	85	35	51	1.5	Light Sleet and Snow
8:52 AM	31	26	82	32	54	1	Light Sleet and Snow
9:20 AM	31	26	82	31	48	0.75	Light Snow
9:52 AM	28	23	81	38	47	0.75	Light Snow
10:52 AM	26	21	81	33	41	1	Light Snow
11:20 AM	25	19	78	39	49	0.5	Snow
11:33 AM	25	19	78	39	51	0.25	Heavy Snow / Blizzard
11:52 AM	23	20	88	45	59	0.25	Heavy Snow / Blizzard
12:08 PM	24	20	84	36	48	0.06	Heavy Snow / Blizzard
12:52 PM	23	19	84	41	48	0.06	Heavy Snow / Blizzard
1:30 PM	23	19	84	43	53	0.13	Heavy Snow / Blizzard
1:52 PM	23	19	84	49	62	0.06	Heavy Snow / Blizzard
2:52 PM	23	20	88	41	54	0.06	Heavy Snow / Blizzard
3:52 PM	24	20	84	36	51	0.06	Heavy Snow / Blizzard
4:52 PM	24	20	84	33	46	0.13	Heavy Snow / Blizzard
5:52 PM	23	19	84	33	48	0.5	Snow / Blowing Snow
6:52 PM	23	19	84	38	52	0.5	Light Snow / Blwng Snow
7:52 PM	24	17	74	39	46	0.5	Blowing Snow
8:52 PM	22	15	75	32	43	1.25	Blowing Snow
9:52 PM	21	12	68	32	40	1.75	Blowing Snow
10:52 PM	21	11	64	33	44	2	Blowing Snow
11:30 PM	21	11	64	23		10	None

As you can see from the observations, Oklahoma City initially started off with rain in the early morning hours. This lasted up to around 8 AM when temperatures finally hit 32 degrees and freezing rain developed. Over the next hour, sleet gradually mixed in with the freezing rain, and then snow gradually mixed in with the sleet. By 9:20 AM, precipitation had changed over to all snow. With heavy snow and gusty winds arriving by 11:33 AM, blizzard conditions enveloped the Oklahoma City area, and would stay in place until about 5:52 PM. This means that Oklahoma City experienced about 6 hours and 19 minutes of blizzard conditions during this event. However, blowing snow continued for almost 6 additional hours after that.

Wichita Falls (SPS) - December 24, 2009
Time (CST)	Temp (°F)	Dew (°F)	RH (%)	Wind (mph)	Peak Gust (mph)	Visibility (mi)	Weather
12:52 AM	37	34	89	7		3	Heavy Rain
1:52 AM	36	34	92	22	28	6	Light Rain
2:52 AM	35	33	92	21	25	8	Light Rain
3:52 AM	34	31	88	17		3	Heavy Rain
4:52 AM	34	31	88	23	32	6	Unknown Precipitation
5:52 AM	34	31	88	24	37	6	Moderate Rain
6:52 AM	34	31	88	21		3	Heavy Rain
7:52 AM	33	30	88	20	31	3	Heavy Rain
8:07 AM	32	30	92	23	29	1.75	Light Snow
8:19 AM	32	30	92	22		1	Light Snow
8:32 AM	32	30	92	23	31	0.5	Snow / Fog
8:52 AM	31	30	96	28	33	0.25	Heavy Snow / Freezing Fog
9:52 AM	30	28	92	29	35	0.25	Heavy Snow / Blizzard
10:52 AM	28	26	92	24	30	0.25	Heavy Snow / Freezing Fog
11:52 AM	26	24	92	29	35	0.25	Heavy Snow / Blizzard
12:52 PM	25	22	88	28	40	0.25	Heavy Snow / Blizzard
1:52 PM	25	22	88	28	49	0.5	Snow / Freezing Fog
2:52 PM	25	23	92	25	33	0.25	Heavy Snow / Freezing Fog
3:52 PM	26	23	88	21	26	0.75	Light Snow
4:22 PM	27	21	80	25	36	1	Light Snow
4:35 PM	28	21	74	33	47	1.75	Unknown Precipitation
4:52 PM	29	21	72	31	38	5	Unknown Precipitation
5:52 PM	28	19	69	28	37	8	Unknown Precipitation

Wichita Falls also initially started off in the morning with rain, before switching to snow by 8:07 AM. Unlike in Oklahoma City, Wichita Falls transitioned over from rain to snow without any mixed precipitation. These observations were taken at Sheppard Air Force Base. There was a total of 8 hours and 15 minutes of snow reported at Wichita Falls, with 3 of those hours meeting visibility and wind speed criteria for blizzard conditions. The unknown precipitation type after 4:35 PM was likely blowing snow that continued after the falling snow had stopped.

Wind Gust Data

The map below is a collection of peak wind gusts taken from ASOS (Automated Surface Observing System) sites and Oklahoma and West Texas Mesonet sites from the blizzard on December 24, 2009. Several sites had incomplete records likely due to icing, or a combination of icing and strong winds during the event.

Peak Wind Gusts Associated with the December 24, 2009 Christmas Eve Blizzard

NWS Products

This is a collection of products issued by the National Weather Service office in Norman, Oklahoma before and during the Christmas Eve blizzard. The products included are:

Area Forecast Discussion (AFD) - provides technical reasoning about the forecast
Hazardous Weather Outlook (HWO) - provides a general look at any hazardous weather in the next 7 days.
Short Term Forecast (NOW) - provides a description of how the weather is expected to evolve in the next few hours.
Special Weather Statement (SPS) - issued for high impact weather events to describe the possible impacts on the public.
Winter Weather Message (WSW) - any watches, warnings, or advisories concerning winter weather.

These products will be placed below in chronological order, starting several days prior to the event.

Dec 22 - 1209 AM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1209 AM CST TUE DEC 22 2009

.AVIATION...
A STATIONARY FRONT WILL LINGER FROM CSM TO PNC THROUGH THE
PERIOD...WITH ONLY MINOR FLUCTUATIONS. LOW CLOUDS MOVING SOUTH
FROM NEBRASKA WILL BRING IFR CONDITIONS TO OUN...OKC...AND PNC
OVERNIGHT...WITH LITTLE IMPROVEMENT DURING THE DAY TOMORROW.
ANOTHER AREA OF LOW CLOUDS IN SOUTH CENTRAL TEXAS WILL MOVE NORTH
INTO WESTERN NORTH TEXAS DURING THE MORNING CREATING MVFR
CONDITIONS FOR SPS...LAW...HBR...AND CSM. THERE IS QUITE A BIT OF
UNCERTAINTY HOW FAR NORTH AND WEST THESE CLOUDS WILL MOVE...WITH
CSM AND HBR ON THE WESTERN EDGE.

&&

.PREV DISCUSSION... /ISSUED 1019 PM CST MON DEC 21 2009/ 

UPDATE...
SOME MINOR ADJUSTMENTS WERE MADE TO A FEW GRIDS TONIGHT TO BETTER
MATCH CURRENT CONDITIONS. 

FOCUS REMAINS ON THE LATE-WEEK SYSTEM... AND 00Z MODELS APPEAR TO
BE THROWING ANOTHER CURVE. NAM... AND NOW GFS... HAVE TURNED THE
MAIN 500-MB LOW FARTHER N INTO CENTRAL PLAINS WED NIGHT AND
THURSDAY. WHILE BOTH STILL INDICATE A VIGOROUS SHORTWAVE TROF
SWINGING ACROSS THE AREA... THE NEW TREND WOULD HAVE US DEALING
WITH A DRY SLOT AND SHARPLY REDUCED PRECIP CHANCES. WE WILL NOT
BITE ON THIS YET.. BUT WILL NEED TO TWEAK THE SPS AND HWO TO PLACE
MORE EMPHASIS ON THE STILL-LIKELY COMBO OF WIND AND COLD THAT WILL
ARRIVE BY XMAS EVE... AND LESS ON THE SNOW AND BLOWING SNOW. 

PREV DISCUSSION... /ISSUED 540 PM CST MON DEC 21 2009/ 

AVIATION...
00Z TAFS...WE HAVE HIGH CONFIDENCE IN VFR CONDITIONS THROUGH THE PERIOD
AT KGAG/KWWR/KCSM/KHBR. ELSEWHERE...LOW LEVEL MOISTURE RETURNING
NORTHWARD MAY BRING IFR CEILINGS OVER OTHER TERMINALS BEGINNING AROUND
09-10Z. MODEL LOW LVL RELATIVE HUMIDITY FORECASTS INDICATE THAT
THE EDGE OF THE IFR CEILINGS MAY BE NEAR KSPS/KLAW/KOKC/KOUN/KPNC.
WE LEFT THE IFR CONDS ALREADY EXISTING FROM PREVIOUS FORECASTS IN
THE TAFS SINCE LOW CIGS AT THESE TERMINALS ARE STILL VERY
POSSIBLE...THOUGH NOT DEFINITE.

TAYLOR

PREV DISCUSSION... /ISSUED 215 PM CST MON DEC 21 2009/ 

DISCUSSION...
PRIMARY FOCUS WAS ON UPCOMING STORM SYSTEM/WINTER WX. STRATUS AND 
POSSIBLY SOME PATCHY FOG WILL DEVELOP LATER TONIGHT AS MOISTURE 
SPREADS NORTHWARD INTO THE FA. GULF MOISTURE WILL CONT TO MOVE 
NORTHWARD TUESDAY AHEAD OF THE APPROACHING STORM SYSTEM. AS MOISTURE 
INCREASES RAIN/DRIZZLE WILL BECOME POSSIBLE IN EASTERN PORTIONS OF 
FA TUESDAY. BOUNDARY WILL HANG OUT IN THE FA UNTIL FINALLY MOVING 
SOUTH AS A COLD FRONT WEDNESDAY. AIRMASS AHEAD OF THE UPR STORM 
SYSTEM... THAT WILL EVENTUALLY MOVE ACROSS THE SOUTHERN PLAINS... 
WILL ALSO CONT TO WARM OVER THE NEXT COUPLE OF DAYS LEADING TO 
PRECIP LIKELY BEGINNING AS RAIN. ARCTIC AIR WILL MOVE INTO THE 
SOUTHERN PLAINS WED NIGHT/THURSDAY LEADING TO PRECIP CHANGING OVER 
TO SNOW. WHEN THIS OCCURS WILL BE DEPENDENT ON HOW FAST THE COLD AIR 
MOVES INTO THE REGION AND WILL ALSO AFFECT SNOWFALL AMOUNTS. RIGHT 
NOW MOST LIKELY AREA TO RECEIVE A DECENT AMOUNT OF ACCUMULATION 
/MAYBE SEVERAL INCHES/ WILL BE ACROSS NORTHERN OK PRIMARILY DUE TO 
WRAP AROUND PRECIP. HOWEVER... MODELS HAVE BEGUN TO INDICATE ANOTHER 
SWATH OF ACCUMULATING SNOW IN SW PORTIONS OF FA NEAR THE UPPER LOW. 
BLOWING SNOW COULD ALSO LIKELY BECOME AN ISSUE AS SFC LOW DEEPENS 
AND STRONG NORTH TO NW WINDS DEVELOP. WILL HANDLE THE WINTER WX IN 
HWOOUN... SPSOUN... AND GRAPHICS FOR NOW. HOWEVER... LATER SHIFTS 
MAY NEED TO ISSUE A WATCH FOR CERTAIN LOCATIONS. AFTER THE STORM 
SYSTEM EXITS THE AREA... THE COLD AIR WILL CONT TO AFFECT THE REGION 
THROUGH THE WEEKEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  41  59  43  57 /   0  20  30  60 
HOBART OK         39  58  40  53 /   0  10  20  50 
WICHITA FALLS TX  45  67  48  62 /   0  10  10  50 
GAGE OK           24  49  33  44 /   0  10  20  60 
PONCA CITY OK     36  53  43  53 /   0  20  50  60 
DURANT OK         47  63  55  67 /   0  20  40  70 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

24/03/18

Dec 22 - 502 AM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
502 AM CST TUE DEC 22 2009

.DISCUSSION...A CYCLONE DEVELOPING WEDNESDAY THROUGH THURSDAY WILL 
PRODUCE A VARIETY OF WEATHER. NUMEROUS MESOSCALE DETAILS WILL 
DETERMINE PRECIPITATION TYPE AND TIMING. THE 00Z GFS REPRESENTS OUR 
MODEL OF CHOICE FOR THESE DETAILS. TWO PRIMARY WAVE OF PRECIPITATION 
ARE EXPECTED. THE FIRST WILL BE RAIN ON WEDNESDAY...AND THE SECOND 
WILL TRANSITION FROM RAIN TO SNOW EARLY THURSDAY. THE LATTER WAVE IS 
NOT EXPECTED TO BE INTENSE ENOUGH...OR PERSIST LONG ENOUGH TO 
WARRANT A WINTER STORM WATCH AT THIS TIME.

GULF MOISTURE RETURNS QUICKLY TODAY...PUTTING A CAP ON 
TEMPERATURES...AND INTRODUCING LOW STRATUS TO MOST OF THE REGION. 
THE EXCEPTION WILL BE SOUTHWEST OKLAHOMA AND FAR WESTERN NORTH 
TEXAS...SITUATED ALONG A TROUGH AXIS EXTENDING SOUTHWARD FROM A 
SURFACE LOW. WE REDUCED THE COVERAGE OF LOW POPS IN THE DAYTIME 
FORECAST...AS TEMPERATURES ARE WARM ENOUGH AND LOW LEVEL WINDS LIGHT 
ENOUGH TO PREVENT ANY SIGNIFICANT DRIZZLE. WE KEPT LOW POPS IN 
SOUTHEAST OKLAHOMA...WHERE SEVERAL MODELS SHOW THE WARM MOIST GULF 
AIR BECOMING SO PRONOUNCED THAT THERE WILL BE SOME INSTABILITY IN 
THE UPPER PART OF THE BOUNDARY LAYER. THIS COULD SUPPORT LIGHT RAIN 
SHOWERS.

TONIGHT THE MODELS GIVE US HIGH POPS...BUT ONLY A FEW HUNDREDTHS OF 
AN INCH OF RAIN. ALTHOUGH MOISTURE WILL BE IN PLACE...IT IS 
DIFFICULT TO FIND MUCH OF A FORCING MECHANISM TO SUPPORT SUCH 
WIDESPREAD HIGH POPS. THE MOST LIKELY MECHANISM WILL BE THE LOW 
LEVEL JET PRODUCING DRIZZLE ALONG AND EAST OF INTERSTATE 35. LOW 
LEVEL FRONTOGENESIS MAY ALSO PRODUCE LIGHT RAIN NEAR THE KANSAS 
BORDER BACK INTO NORTHWEST OKLAHOMA. WE UNDERCUT POPS FROM CENTRAL 
INTO SOUTHWEST OKLAHOMA...AND WESTERN NORTH TEXAS. A FEW 
THUNDERSTORMS MAY BREAK OUT IN SOUTHEAST OKLAHOMA...WHERE MOISTURE 
WILL CONTINUE TO DEEPEN. IT IS MORE LIKELY...HOWEVER...THAN THUNDER 
WILL OCCUR DURING THE DAY WEDNESDAY...AS THE FIRST PRONOUNCED SHORT 
WAVE TROUGH EJECTS FROM THE DEVELOPING UPPER LEVEL CYCLONE. THIS 
WAVE WILL STRENGTHEN THE DRY SLOT OVER OKLAHOMA WHEN IT MOVES UP 
INTO KANSAS WEDNESDAY AFTERNOON. AT THE SAME TIME...COLD AIR WILL 
BEGIN TO ARRIVE INTO NORTHWEST OKLAHOMA...AND WE INTRODUCED A PERIOD 
OF FREEZING DRIZZLE THAT COULD AFFECT WESTERN OKLAHOMA OVERNIGHT 
INTO THURSDAY MORNING.

THE SECOND...AND PRIMARY SHORT WAVE TROUGH...EJECTS FROM WEST TEXAS 
UP TOWARD EASTERN OKLAHOMA WEDNESDAY NIGHT. THIS WILL LEAD TO 
ADDITIONAL RAIN AND THUNDERSTORMS...ESPECIALLY ALONG AND EAST OF 
INTERSTATE 44. GIVEN THE DYNAMIC LIFTING AND ARRIVAL OF COLD LOW 
LEVEL AIR...WE SHOULD SEE A CHANGE TO SNOW WHEN THE SYSTEM MATURES 
THURSDAY MORNING OVER CENTRAL AND NORTHERN OKLAHOMA. WE FORECAST THE 
CHANGEOVER A LITTLE AHEAD OF THE GFS THERMODYNAMIC PROFILE... 
ASSUMING THE MODELS USUALLY DO NOT CAPTURE THE EFFECTS OF 
EVAPORATIVE COOLING AND STRONG RIDGING ALONG THE HIGH PLAINS THAT 
WILL SUPPORT MORE RAPID COOLING. EVEN WITH AN EARLY 
CHANGEOVER...THOUGH...THE PRECIPITATION IS NOT LIKELY TO PERSIST IN 
ANY SIGNIFICANT WAY BEFORE COLD ADVECTION AND SUBSIDENCE BEGINS TO 
DOMINATE IN THE WAKE OF THE UPPER LEVEL WAVE. ALTHOUGH SNOW WRAPPING 
AROUND THE MATURE LOW WILL REDUCE VISIBILITY AND MAY ACCUMULATE IN 
NORTH CENTRAL OR CENTRAL OKLAHOMA...THE CURRENT FORECAST IS FOR AN 
ADVISORY LEVEL EVENT.

THE LONG DURATION COLD THAT WILL FOLLOW THE STORM...FROM THURSDAY 
THROUGH THE WEEKEND...COULD BE THE BIGGER STORY. AND FINALLY...THERE 
IS A SECOND STORM BEGINNING TO TAKE SHAPE...AS EARLY NEXT WEEK THE 
MODELS FORECAST THE NEXT SOUTHERN STREAM TROUGH TO PROGRESS THROUGH 
SPLIT FLOW TO OUR WEST. IF THE TROUGH ARRIVES EARLY ENOUGH...COLD 
AIR WILL ALREADY BE IN PLACE...AND THAT SYSTEM COULD BE MORE 
FAVORABLE FOR SNOW THAN THE CURRENT SYSTEM.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  55  49  59  34 /   0  40  50  70 
HOBART OK         57  45  54  30 /   0  10  20  50 
WICHITA FALLS TX  66  51  62  37 /   0  20  30  60 
GAGE OK           56  34  41  26 /  10  30  60  60 
PONCA CITY OK     53  46  58  32 /  10  40  70  60 
DURANT OK         58  56  64  45 /  20  70  80  90 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

02/22

Dec 22 - 624 AM - Special Weather Statement

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
624 AM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-222100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
624 AM CST TUE DEC 22 2009

...LATE WEEK STORM WILL BRING STRONG WINDS...VERY COLD AIR...AND 
SOME SNOW...

HAZARDOUS WINTER WEATHER MAY DEVELOP OVER THE SOUTHERN PLAINS 
BEGINNING WEDNESDAY NIGHT...AS A STORM SYSTEM INTENSIFIES AND TRACKS 
FROM THE SOUTHERN ROCKIES EASTWARD ACROSS THE PLAINS. STRONG 
NORTHERLY WINDS AND MUCH COLDER AIR WILL RESULT IN A COLD AND 
BLUSTERY CHRISTMAS EVE WITH WIND CHILL TEMPERATURES IN THE TEENS AND 
20S. ALTHOUGH WIND SPEEDS WILL DECREASE ON CHRISTMAS DAY...IT WILL 
STILL BE A COLD...WITH HIGHS ONLY IN THE 30S.  

THE STORM WILL BEGIN TO TAKE SHAPE TONIGHT...WHEN COLDER AIR GATHERS 
OVER NORTHWESTERN OKLAHOMA. ON WEDNESDAY...A COLD FRONT WILL WILL 
SPREAD TOWARD THE SOUTHEAST...SLOWLY AT FIRST...BUT MORE RAPIDLY BY 
EVENING. FREEZING TEMPERATURES WILL REACH CENTRAL AND SOUTHWEST 
OKLAHOMA...AND WESTERN NORTH TEXAS...BY THURSDAY MORNING.

FREEZING DRIZZLE MAY DEVELOP OVER PARTS OF WESTERN OKLAHOMA 
WEDNESDAY NIGHT AND EARLY THURSDAY...AND ROADS COULD BECOME SLICK 
AND HAZARDOUS. AN UPPER LOW ARRIVING ON THURSDAY WILL CAUSE RAIN AND 
DRIZZLE TO CHANGE TO MIX WITH OR CHANGE TO SNOW OVER NORTHERN AND 
MUCH OF CENTRAL OKLAHOMA.

THE LATE ARRIVAL OF COLD AIR AND THE PROGRESSIVE NATURE OF THE UPPER 
LOW WILL LIMIT SNOWFALL TOTALS. STILL...IT DOES APPEAR THAT 1 TO 3 
INCHES OF SNOW MAY ACCUMULATE IN NORTHERN OKLAHOMA...ESPECIALLY 
AROUND ENID AND PONCA CITY EARLY THURSDAY. SOME LIGHT SNOW 
ACCUMULATION MAY EXTEND AS FAR SOUTH AND WEST AS OKLAHOMA CITY... 
CLINTON...AND WOODWARD. INCREASINGLY BLUSTERY WINDS WILL RESULT IN 
BLOWING SNOW AND REDUCED VISIBILITY.

HAZARDOUS WINTER WEATHER WILL PERSIST EVEN AFTER THE PRECIPITATION 
ENDS. A LARGE MASS OF ARCTIC AIR...THE COLDEST YET THIS 
SEASON...WILL OVERSPREAD ALL OF OKLAHOMA AND WESTERN NORTH TEXAS. 
WIND CHILL TEMPERATURES MAY BECOME DANGEROUSLY LOW...ESPECIALLY 
THURSDAY NIGHT AND FRIDAY. AIR TEMPERATURES ACROSS NORTHERN OKLAHOMA 
COULD REMAIN NEAR OR BELOW FREEZING FOR AS LONG AS THREE OR FOUR 
DAYS.

$$

Dec 22 - 1145 AM - Hazardous Weather Outlook

Jump To Top

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1145 AM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-231100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1145 AM CST TUE DEC 22 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE POSSIBLE IN SOUTHEAST OKLAHOMA...MAINLY OVERNIGHT. 
SEVERE THUNDERSTORMS ARE NOT EXPECTED. 

DISCUSSION...
SURFACE LOW PRESSURE WILL INTENSIFY IN WEST TEXAS AND SOUTH WINDS 
WILL PULL GULF MOISTURE NORTHWARD INTO SOUTHERN AND EASTERN OKLAHOMA 
THROUGH TONIGHT. A STRENGTHENING LOW LEVEL JET MAY AID IN THE 
DEVELOPMENT OF A FEW THUNDERSTORMS IN SOUTHEAST OKLAHOMA WHERE LOW 
LEVEL MOISTURE WILL BE THE DEEPEST. HOWEVER...INSTABILITY WILL 
REMAIN LIMITED AND SEVERE THUNDERSTORMS ARE NOT EXPECTED.     

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY DEC 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...50 PERCENT. 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
STRONG THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF CENTRAL AND 
SOUTHEAST OKLAHOMA WEDNESDAY. MOISTURE AND INSTABILITY WILL CONTINUE 
TO INCREASE AS SOUTHERLY WINDS PREVAIL TO THE EAST OF A COLD FRONT 
ACROSS NORTHWEST OKLAHOMA. WIND SHEAR WILL ALSO INCREASE AS THE 
UPPER LEVEL STORM SYSTEM NEARS THE AREA. THE INCREASING INSTABILITY 
AND SHEAR WILL BE FAVORABLE FOR A FEW SEVERE THUNDERSTORMS OVER 
PARTS OF SOUTHEAST OKLAHOMA. THE MAIN THREAT WILL BE LARGE HAIL. 

OTHER HAZARDOUS WEATHER...
A WINTER STORM WILL AFFECT THE SOUTHERN PLAINS FROM LATE TUESDAY 
THROUGH AT LEAST THURSDAY. RAIN COULD CHANGE TO SNOW WEDNESDAY NIGHT 
INTO THURSDAY... RESULTING IN HAZARDOUS TRAVEL CONDITIONS. SOME SNOW 
ACCUMULATIONS WILL BE POSSIBLE...MAINLY OVER NORTHERN OKLAHOMA. 
HOWEVER...ALL AREAS WILL BE IMPACTED BY THE COMBINATION OF COLD 
TEMPERATURES AND STRONG NORTHERLY WINDS... WHICH WILL RESULT IN LOW 
WIND CHILL VALUES. IN AREAS THAT DO SEE SNOW ACCUMULATIONS...THE 
STRONG WINDS WILL LIKELY RESULT IN AREAS OF BLOWING SNOW AND LOWER 
VISIBILITY.  

AS THE STORM EXITS... A LARGE MASS OF ARCTIC AIR WILL OVERSPREAD THE 
SOUTHERN PLAINS. THE COLD AIRMASS COMBINED WITH STRONG WINDS WILL 
RESULT IN DANGEROUSLY LOW WIND CHILL TEMPERATURES BOTH THURSDAY AND 
FRIDAY. 

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM 
WEDNESDAY.

$$

30

Dec 22 - 402 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
402 PM CST TUE DEC 22 2009

.DISCUSSION...
SURFACE FRONTAL BOUNDARY CURRENTLY EXTENDS FROM NORTH CENTRAL INTO
SOUTHWEST OKLAHOMA. ALTHOUGH AIR ON THE COOL SIDE OF THIS BOUNDARY
IS NOT TOO COLD YET... THE COLDER AIR IN THE NORTHERN PLAINS WILL
MOVE SOUTH TOWARD THIS BOUNDARY OVER THE COURSE TONIGHT AND EARLY
WEDNESDAY. UPSTAIRS... THE UPPER LOW MOVING INTO ARIZONA WILL
MOVE EAST TONIGHT WITH STRONGER LIFT THAN EARLIER ANTICIPATED
DEVELOPING ACROSS THE AREA AHEAD OF THIS WAVE. WITH THE MOIST LOW-
LEVEL ATMOSPHERE AND THE BOUNDARY ACROSS A PORTION OF THE AREA...
IT IS LOOKING LIKE HIGHER CHANCES OF MEASURABLE RAIN AS OPPOSED TO
JUST DRIZZLE AND HAVE THEREFORE INCREASED THE POPS.

THE 12Z MODELS ARE ON THE SAME PAGE WITH THE EVOLUTION OF THIS
SYSTEM ALTHOUGH IT IS SLIGHTLY DIFFERENT THAN PREVIOUS RUNS. AFTER
THE FIRST WAVE MOVES BY THE AREA... SURFACE CYCLOGENESIS DEVELOPS
ALONG THE BOUNDARY WITH THIS SURFACE LOW MOVING NORTHEAST
TOMORROW AFTERNOON ALLOWING COLDER AIR TO BEGIN SPREADING ACROSS
MUCH OF THE AREA. MEANWHILE THE UPPER TROF CURRENTLY DIVING SOUTH
FROM OREGON SWINGS EAST FROM THE SOUTHWEST UNITED STATES AND
PASSES OVER THE AREA THURSDAY. WHILE THE BEST MOISTURE SHIFTS EAST
AS THE FIRST WAVE MOVES EAST... LINGERING MOISTURE MAY BE
SUFFICIENT FOR PRECIPITATION TO PERSIST. ENOUGH COOL AIR FILTERS
INTO THE AREA TO SUPPORT THE CHANGE TO SNOW IN NORTHWEST OKLAHOMA
LATE WEDNESDAY AFTERNOON ACCORDING TO THE BUFR SOUNDINGS... WITH
THE COOL AIR SPREADING ACROSS THE AREA AND SUPPORTING A CHANGEOVER
TO SNOW FARTHER SOUTHEAST THURSDAY AS PRECIPITATION IS WANING.
THE OVERLAP BETWEEN THE SUFFICIENTLY COLD LOW-LEVEL AIR AND
PRECIPITATION MAY ALLOW SOME LIGHT ACCUMULATIONS /AN INCH OR SO/
ACROSS NORTHERN OKLAHOMA BUT STILL DO NOT EXPECT SIGNIFICANT
SNOWFALL. MORE LIKELY TO BE NOTICED WILL BE THE STRONG NORTH WINDS
/25 TO 35 MPH IN SOME AREAS/ ON CHRISTMAS EVE IN RESPONSE TO THE
DEEPENING LOW PRESSURE TO THE EAST AS THIS SECOND WAVE MOVES
THROUGH THE PLAINS. THE WIND IN CONJUNCTION WITH THE COLDER LOW-
LEVEL AIR WILL MAKE IT FEEL QUITE COLD. PRECIP MAY LINGER NORTH ON
THURSDAY NIGHT AND FRIDAY AS ANOTHER SHORTWAVE MOVES SOUTH THROUGH
THE PLAINS ON THE BACK SIDE OF THE SECOND LOW... BUT MOISTURE WILL
BE LIMITED.

IN THE EXTENDED... NO SIGNIFICANT UPDATES EXCEPT TO LOWER MAX
TEMPERATURES ON SUNDAY AND MONDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  48  59  32  38 /  30  70  50  30 
HOBART OK         44  55  29  37 /  20  40  40  10 
WICHITA FALLS TX  50  65  34  39 /  20  40  50  20 
GAGE OK           34  39  21  30 /  40  60  50  20 
PONCA CITY OK     43  50  30  36 /  70  90  60  50 
DURANT OK         56  68  40  42 /  60  60  70  30 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

Dec 22 - 435 PM - Special Weather Statement

Jump To Top

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
435 PM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-230600-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
435 PM CST TUE DEC 22 2009

...LATE WEEK STORM WILL BRING STRONG WINDS...VERY COLD AIR...AND 
SOME SNOW...

WINTER WEATHER MAY DEVELOP OVER THE SOUTHERN PLAINS BEGINNING 
WEDNESDAY EVENING AS A STORM SYSTEM INTENSIFIES AND TRACKS FROM THE 
SOUTHERN ROCKIES EASTWARD ACROSS THE PLAINS. STRONG NORTHERLY WINDS 
AND MUCH COLDER AIR WILL RESULT IN A COLD AND BLUSTERY CHRISTMAS EVE 
WITH WIND CHILL TEMPERATURES IN THE SINGLE DIGITS TO 20S. ALTHOUGH 
WIND SPEEDS WILL DECREASE LATE ON CHRISTMAS DAY...IT WILL STILL BE A 
COLD...WITH HIGHS ONLY IN THE UPPER 20S AND 30S.  

THE STORM WILL BEGIN TO TAKE SHAPE TONIGHT AS COLDER AIR BEGINS TO 
MOVE INTO NORTHWESTERN OKLAHOMA. ON WEDNESDAY...A COLD FRONT WILL 
SPREAD TOWARD THE SOUTHEAST...SLOWLY AT FIRST...BUT MORE RAPIDLY BY 
EVENING. FREEZING TEMPERATURES WILL REACH CENTRAL AND SOUTHWEST 
OKLAHOMA...AND WESTERN NORTH TEXAS...BY THURSDAY MORNING.

AS COLD AIR CONTINUES TO SPREAD INTO THE AREA... RAIN MAY MIX WITH 
OR CHANGE TO SNOW OVER NORTHWESTERN OKLAHOMA LATE WEDNESDAY 
AFTERNOON... AND MUCH OF WESTERN OKLAHOMA AND PORTIONS OF WESTERN 
NORTH TEXAS BEFORE SUNRISE ON THURSDAY. RAIN MAY THEN MIX WITH OR 
CHANGE TO SNOW BEFORE PRECIPITATION ENDS ACROSS THE REMAINDER OF THE 
AREA DURING THE DAY ON THURSDAY. 

THE LATE ARRIVAL OF COLD AIR AND THE PROGRESSIVE NATURE OF THE UPPER 
LOW WILL LIMIT SNOWFALL TOTALS. STILL...IT DOES APPEAR THAT 1 TO 3 
INCHES OF SNOW MAY ACCUMULATE IN NORTHERN OKLAHOMA...ESPECIALLY 
AROUND WOODWARD TO ENID AND PONCA CITY EARLY THURSDAY. SOME LIGHT 
SNOW ACCUMULATION MAY EXTEND AS FAR SOUTH AND WEST AS OKLAHOMA CITY 
AND CLINTON. INCREASINGLY BLUSTERY WINDS WILL RESULT IN BLOWING SNOW 
AND REDUCED VISIBILITY.

HAZARDOUS WINTER WEATHER WILL PERSIST EVEN AFTER THE PRECIPITATION 
ENDS. A LARGE MASS OF ARCTIC AIR...THE COLDEST YET THIS 
SEASON...WILL OVERSPREAD ALL OF OKLAHOMA AND WESTERN NORTH TEXAS. 
WIND CHILL TEMPERATURES MAY BECOME DANGEROUSLY LOW...ESPECIALLY 
THURSDAY NIGHT AND FRIDAY. AIR TEMPERATURES ACROSS NORTHERN OKLAHOMA 
COULD REMAIN NEAR OR BELOW FREEZING FOR AS LONG AS THREE OR FOUR 
DAYS.

$$

SC/DS

Dec 22 - 550 PM - Hazardous Weather Outlook

Jump To Top

HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE NORMAN OK
550 PM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-231100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
550 PM CST TUE DEC 22 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE POSSIBLE MAINLY LATE TONIGHT IN CENTRAL AND 
SOUTHERN OKLAHOMA... AND PARTS OF WESTERN NORTH TEXAS. SEVERE 
THUNDERSTORMS ARE NOT EXPECTED. 

DISCUSSION...
SURFACE LOW PRESSURE WILL INTENSIFY IN WEST TEXAS AND SOUTH WINDS 
WILL CONTINUE TO PULL GULF MOISTURE NORTHWARD INTO OKLAHOMA AND 
WESTERN NORTH TEXAS THROUGH TONIGHT. A STRENGTHENING LOW LEVEL JET 
MAY AID IN THE DEVELOPMENT OF A FEW THUNDERSTORMS IN CENTRAL AND 
SOUTHERN OKLAHOMA... AND PARTS OF WESTERN NORTH TEXAS. HOWEVER... 
THE INSTABILITY WILL REMAIN LIMITED AND SEVERE THUNDERSTORMS ARE NOT 
EXPECTED.     

PROBABILITY TABLE...
VALID THROUGH 700 AM CST WEDNESDAY DEC 23.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...50 PERCENT. 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...10 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY...

THUNDERSTORM OUTLOOK...
STRONG THUNDERSTORMS WILL BE POSSIBLE OVER PARTS OF CENTRAL AND 
SOUTHEAST OKLAHOMA WEDNESDAY. MOISTURE AND INSTABILITY WILL CONTINUE 
TO INCREASE AS SOUTHERLY WINDS PREVAIL TO THE EAST OF A COLD FRONT 
ACROSS NORTHWEST OKLAHOMA. WIND SHEAR WILL ALSO INCREASE AS THE 
UPPER LEVEL STORM SYSTEM NEARS THE AREA. THE INCREASING INSTABILITY 
AND SHEAR WILL BE FAVORABLE FOR A FEW SEVERE THUNDERSTORMS OVER 
PARTS OF SOUTHEAST OKLAHOMA. THE MAIN THREAT WILL BE LARGE HAIL. 

OTHER HAZARDOUS WEATHER...
A WINTER STORM WILL AFFECT THE SOUTHERN PLAINS FROM LATE TUESDAY 
THROUGH AT LEAST THURSDAY. RAIN COULD CHANGE TO SNOW WEDNESDAY NIGHT 
INTO THURSDAY. SOME SNOW ACCUMULATIONS WILL BE POSSIBLE... MAINLY 
OVER NORTHERN OKLAHOMA. HOWEVER...ALL AREAS WILL BE IMPACTED BY THE 
COMBINATION OF COLD TEMPERATURES AND STRONG NORTHERLY WINDS... WHICH 
WILL RESULT IN LOW WIND CHILL VALUES. IN AREAS THAT DO SEE SNOW 
ACCUMULATIONS... THE STRONG WINDS WILL LIKELY RESULT IN AREAS OF 
BLOWING SNOW AND LOWER VISIBILITY.  

AS THE STORM EXITS... A LARGE MASS OF ARCTIC AIR WILL OVERSPREAD THE 
SOUTHERN PLAINS. THE COLD AIRMASS COMBINED WITH STRONG WINDS WILL 
RESULT IN DANGEROUSLY LOW WIND CHILL TEMPERATURES BOTH THURSDAY AND 
FRIDAY. 

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM 
WEDNESDAY.

$$

30/CJS

Dec 22 - 931 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
931 PM CST TUE DEC 22 2009

.UPDATE...
LEAD SHORT WAVE IS CURRENTLY MOVING THROUGH WEST TEXAS THIS
EVENING WITH SCATTERED LIGHT PRECIPITATION... PROBABLY MOSTLY
VIRGA... CURRENTLY DEVELOPING OVER OKLAHOMA AND PARTS OF NORTH
TEXAS. AS THE DRY SLOT WORKS ASSOCIATED WITH THE WAVE MOVES NORTHEAST...
THE CHANCE FOR MEASURABLE PCPN IN THE SOUTHWEST PART OF THE CWA
WILL BE FALLING OFF. MEANWHILE... HAVE INCLUDED THE CHANCE FOR
FREEZING DRIZZLE IN THE FAR NORTHWEST OKLAHOMA FOR THE
OVERNIGHT HOURS. TEMPERATURES HAVE LIKELY SLIPPED JUST BELOW
FREEZING IN FAR WESTERN HARPER COUNTY... AND COULD SEE SUB-
FREEZING TEMPS SLIP A LITTLE FARTHER EAST AND SOUTH BY MORNING. AT
THIS POINT... IT LOOKS LIKE PCPN WILL REMAIN VERY LIGHT... BUT
WILL KEEP TABS ON IT AS THE NIGHT PROGRESSES.

QUICK LOOK AT NEW MODEL RUNS TAKE THE 500 MB LOW FARTHER TO THE
SOUTH AGAIN WHICH COULD INCREASE THE CHANCE FOR ACCUMULATING SNOW FARTHER
SOUTH IN OUR AREA. HOWEVER... AMOUNTS ARE MORE PROBLEMATIC AS THIS
EVENING'S SHORT WAVE IS FORECAST TO BRING A DRY SLOT INTO THE AREA
LATE TONIGHT AND WEDNESDAY. THE DRY SLOT THEN EVOLVES INTO A
'DONUT HOLE' OF LOWER RH'S ACROSS MUCH OF THE AREA AS MOISTURE
BEGINS TO WRAP AROUND THE PERIPHERY OF THE MID LEVEL LOW WEDNESDAY
NIGHT. THIS COULD REDUCE PRECIPITATION AMOUNTS BEFORE WE POSSIBLY
SEE A NARROW WINDOW OF SOMEWHAT HEAVIER SNOW ACROSS CENTRAL
OKLAHOMA THURSDAY MORNING AS THE BAND OF MOISTURE ON THE WESTERN
SIDE OF THE LOW MOVES EAST. WILL SEE HOW THE OTHER MODELS
SOLUTIONS EVOLVE BEFORE ADJUSTING THINGS TOO MUCH.

Dec 22 - 1036 PM - Special Weather Statement

Jump To Top

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
1036 PM CST TUE DEC 22 2009

OKZ004>048-050>052-TXZ083>090-231200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-
NOBLE-ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-
BECKHAM-WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-
JEFFERSON-CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-
FOARD-WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...MEDFORD...
PONCA CITY...ARNETT...WOODWARD...FAIRVIEW...ENID...PERRY...
CHEYENNE...TALOGA...WEATHERFORD...CLINTON...WATONGA...
KINGFISHER...GUTHRIE...STILLWATER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
HOLDENVILLE...HOLLIS...MANGUM...HOBART...ALTUS...FREDERICK...
LAWTON...DUNCAN...PAULS VALLEY...SULPHUR...ADA...COALGATE...
WALTERS...WAURIKA...ARDMORE...TISHOMINGO...ATOKA...MARIETTA...
MADILL...DURANT...QUANAH...CHILLICOTHE...CROWELL...VERNON...
WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...ARCHER CITY...
HOLLIDAY...LAKESIDE CITY...HENRIETTA
1036 PM CST TUE DEC 22 2009

...LATE WEEK STORM WILL BRING STRONG WINDS...VERY COLD AIR...AND 
SOME SNOW...

WINTER WEATHER MAY DEVELOP OVER THE SOUTHERN PLAINS BEGINNING 
WEDNESDAY EVENING AS A STORM SYSTEM INTENSIFIES AND TRACKS FROM THE 
SOUTHERN ROCKIES EASTWARD ACROSS THE PLAINS. STRONG NORTHERLY WINDS 
AND MUCH COLDER AIR WILL RESULT IN A COLD AND BLUSTERY CHRISTMAS EVE 
WITH WIND CHILL TEMPERATURES IN THE SINGLE DIGITS TO 20S. ALTHOUGH 
WIND SPEEDS WILL DECREASE LATE ON CHRISTMAS DAY...IT WILL STILL BE 
COLD...WITH HIGHS ONLY IN THE UPPER 20S AND 30S.  

THE STORM WILL BEGIN TO TAKE SHAPE DURING THE EARLY MORNING HOURS ON 
WEDNESDAY AS COLDER AIR BEGINS TO MOVE INTO NORTHWESTERN OKLAHOMA. 
ON WEDNESDAY...A COLD FRONT WILL SPREAD TOWARD THE SOUTHEAST... 
SLOWLY AT FIRST...BUT MORE RAPIDLY BY EVENING. FREEZING TEMPERATURES 
WILL REACH CENTRAL AND SOUTHWEST OKLAHOMA...AND WESTERN NORTH 
TEXAS...BY THURSDAY MORNING.

AS COLD AIR CONTINUES TO SPREAD INTO THE AREA... RAIN MAY MIX WITH 
OR CHANGE TO SNOW OVER NORTHWESTERN OKLAHOMA LATE WEDNESDAY 
AFTERNOON... AND MUCH OF WESTERN OKLAHOMA AND PORTIONS OF WESTERN 
NORTH TEXAS BEFORE SUNRISE ON THURSDAY. RAIN MAY THEN MIX WITH OR 
CHANGE TO SNOW BEFORE PRECIPITATION ENDS ACROSS THE REMAINDER OF THE 
AREA DURING THE DAY ON THURSDAY. 

THE LATE ARRIVAL OF COLD AIR AND THE PROGRESSIVE NATURE OF THE UPPER 
LOW WILL LIMIT SNOWFALL TOTALS. STILL...IT DOES APPEAR THAT 1 TO 3 
INCHES OF SNOW MAY ACCUMULATE IN PORTIONS OF NORTHERN AND CENTRAL 
OKLAHOMA...ESPECIALLY AROUND ENID...PONCA CITY...AND STILLWATER 
EARLY THURSDAY. SNOW ACCUMULATIONS IN EXCESS OF TWO INCHES MAY 
EXTEND SOUTH INTO THE OKLAHOMA CITY METRO AREA. SOME LIGHT SNOW 
ACCUMULATION MAY EXTEND AS FAR SOUTH AND WEST AS ARDMORE AND HOBART. 
INCREASINGLY BLUSTERY WINDS WILL RESULT IN BLOWING AND DRIFTING 
SNOW... AS WELL AS REDUCED VISIBILITY.

HAZARDOUS WINTER WEATHER WILL PERSIST EVEN AFTER THE PRECIPITATION 
ENDS. A LARGE MASS OF ARCTIC AIR...THE COLDEST YET THIS 
SEASON...WILL OVERSPREAD ALL OF OKLAHOMA AND WESTERN NORTH TEXAS. 
WIND CHILL TEMPERATURES MAY BECOME DANGEROUSLY LOW...ESPECIALLY 
THURSDAY NIGHT AND FRIDAY. AIR TEMPERATURES ACROSS NORTHERN OKLAHOMA 
COULD REMAIN NEAR OR BELOW FREEZING FOR AS LONG AS THREE OR FOUR 
DAYS.

$$

SC/DS/AT

Dec 22 - 1048 PM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1048 PM CST TUE DEC 22 2009

.UPDATE...
UPDATING GRIDS TO EXPAND SNOW ACCUMULATIONS FARTHER SOUTH INTO
CENTRAL OKLAHOMA AND DOWN TOWARDS THE ARBUCKLES FOR CHRISTMAS EVE.
LATEST GFS COMING IN RELATIVELY CLOSE TO THE MORE SOUTHWARD TRACK
OF THE UPPER LOW AS WAS ALSO DEPICTED BY THE LATEST NAM. STILL
SOME QUESTION REMAINS ON AMOUNTS AS DRY SLOT WITH LEAD SHORT WAVE WILL
TEMPORARILY MOVE OUT MOISTURE. MOST OF THE SNOW WILL LIKELY OCCUR
ON THE BACK SIDE OF THE UPPER LOW WHICH WILL BE PROGRESSIVE. AT
THIS TIME... IT APPEARS THAT THE MOST LIKELY WINDOW FOR
SIGNIFICANT ACCUMULATIONS WILL BE FROM VERY LATE WEDNESDAY NIGHT
THROUGH ABOUT MIDDAY THURSDAY. STRONG NORTH WINDS COULD ALSO LEAD
TO CONSIDERABLE BLOWING AND DRIFTING.

Dec 23 - 421 AM - Winter Weather Message

Jump To Top

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
421 AM CST WED DEC 23 2009

OKZ004>006-009>011-014>016-021-231830-
/O.NEW.KOUN.WW.Y.0008.091224T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
CUSTER-BECKHAM-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA...WEATHERFORD...CLINTON...
ELK CITY...SAYRE
421 AM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING DRIZZLE...SNOW...AND BLOWING SNOW...
WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 6 PM CST THURSDAY.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: FREEZING DRIZZLE CHANGING TO LIGHT SNOW...WITH
  ACCUMULATION AROUND ONE INCH

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

OKZ017-022-023-033>038-231830-
/O.NEW.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
BLAINE-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-TILLMAN-COMANCHE-
INCLUDING THE CITIES OF...WATONGA...CORDELL...ANADARKO...HOLLIS...
MANGUM...HOBART...ALTUS...FREDERICK...LAWTON
421 AM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR FREEZING DRIZZLE...SNOW...AND BLOWING SNOW...
WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY.

* TIMING: LATE TONIGHT THROUGH THURSDAY

* MAIN IMPACT: 

* MAIN IMPACT: FREEZING DRIZZLE CHANGING TO LIGHT SNOW...WITH
  ACCUMULATION UP TO ONE INCH

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

OKZ007-008-012-013-018>020-024>030-231830-
/O.NEW.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
KINGFISHER...GUTHRIE...STILLWATER...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE
421 AM CST WED DEC 23 2009

...WINTER STORM WATCH IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY
AFTERNOON. 

* TIMING: NEAR SUNRISE THURSDAY THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: SNOW...WITH ACCUMULATION OF 2 TO 5 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
  BLOWING SNOW AND LOW WIND CHILL TEMPERATURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WATCH MEANS THERE IS A POTENTIAL FOR SIGNIFICANT
SNOW...SLEET...OR ICE ACCUMULATIONS THAT MAY IMPACT TRAVEL.
CONTINUE TO MONITOR THE LATEST FORECASTS.

&&

$$

BURKE/02

Dec 23 - 454 AM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
454 AM CST WED DEC 23 2009

.DISCUSSION...ALTHOUGH THE TRACK OF OUR UPPER LEVEL STORM HAS NOT 
WAVERED TOO MUCH...THERE ARE SOME SUBTLE CHANGES SHOWING UP IN THE 
OBSERVATIONS AND RECENT MODEL TRENDS. THESE SUBTLE CHANGES COMBINED 
TO YIELD A MORE SIGNIFICANT SHIFT IN OUR THINKING...AND LED US TO 
ISSUE A WINTER STORM WATCH FOR CENTRAL AND NORTH CENTRAL OKLAHOMA. 

THIS MORNING...A QUASISTATIONARY SURFACE BOUNDARY HAD SLIPPED TO 
NEAR INTERSTATE 44...ABOUT 6 TO 12 HOURS AHEAD OF SCHEDULE. THE 
FRONT WILL NOT COME CHARGING THROUGH TODAY...AS IT WILL WAIT FOR 
UPSTREAM HEIGHT FALLS ASSOCIATED WITH THE APPROACHING UPPER LEVEL 
LOW. BUT COLD AIR HAS OVERSPREAD PART OF OUR FORECAST AREA THIS 
MORNING...AND THE FRONT WILL CONTINUE TO STRENGTHEN...AIDED BY 
DIFFERENTIAL HEATING...ADVECTIONS...AND FRONTOGENESIS. AS A 
RESULT...WE EXPECT SUB FREEZING TEMPERATURES TO OVERTAKE THE REGION 
A LITTLE BIT FASTER WHEN THE FRONT MOVES EAST WITH THE UPPER LOW
LATER TONIGHT. ADDITIONALLY...THE MODEL SOLUTIONS HAVE TRENDED
TOWARD PRODUCING GREATER MID AND UPPER LEVEL ASCENT FROM TONIGHT
INTO MUCH OF THE DAY THURSDAY...WHILE THE LOW TAKES A TRACK
THROUGH NORTH CENTRAL TEXAS AND SOUTHEAST OKLAHOMA...WHICH IS
CLIMATOLOGICALLY FAVORABLE FOR SNOWFALL IN AREAS NORTH OF THE
TRACK. WHILE WE SHOULD NOT PLACE TOO MUCH WEIGHT ON THE SNOW
ACCUMULATION ALGORITHMS FROM ANY PARTICULAR MODEL RUN...THERE HAVE
BEEN A NUMBER OF RUNS OF THE NAM AND GFS OVER THE PAST DAY...THAT
HAVE PRODUCED ACCUMULATING SNOWFALL IN THE AREA OF CONCERN.

THE STORM SYSTEM WILL BE PROGRESSIVE...AND SUBSTANTIAL SNOW MAY LAST 
FOR ONLY 4 TO 5 HOURS AT ANY GIVEN LOCATION...BUT WE ARE CONCERNED 
ABOUT THE POTENTIAL FOR SOME HEAVY SNOWFALL RATES. THE 00Z NAM 
SOUNDINGS...IN PARTICULAR...SHOW STRONG LIFT THROUGH THE DENDRITIC 
CRYSTAL ZONE ATOP A DEEP LAYER OF SATURATED AIR THAT IS JUST BELOW 
FREEZING. SO WHILE THE GROUND WILL INITIALLY BE WARM...THE INTENSITY 
OF THE SNOW COULD COMPENSATE...TO RESULT IN ACCUMULATION. ALSO 
DURING THIS TIME...WINDS WILL BECOME BLUSTERY. AN ARCTIC COLD FRONT 
EXITING MONTANA EARLY WEDNESDAY MORNING...WILL REACH NORTHWEST 
OKLAHOMA BY SUNRISE THURSDAY...AND BLAST THROUGH THE REST OF 
OKLAHOMA AND WESTERN NORTH TEXAS BY AFTERNOON.

IT IS IMPORTANT TO POINT OUT THAT THERE IS STILL AN UNUSUAL AMOUNT 
OF CHANGE FROM ONE MODEL RUN TO THE NEXT...BUT THAT THE OVERALL 
TREND SUGGESTS THERE IS THE THREAT OF WINTER STORM CONDITIONS.
WE HAVE ALSO POSTED WINTER WEATHER ADVISORIES TO THE WEST FOR
LIGHTER SNOW AMOUNTS...BUT COLDER WIND CHILL TEMPERATURES...AND
SOME FREEZING DRIZZLE.

NOT TO BE OUTDONE...IS THE SEVERE THUNDERSTORM POTENTIAL. THE SPC 
SLIGHT RISK AREA LOOKS WELL WARRANTED FOR SOUTHERN AND EASTERN 
OKLAHOMA. WITH A LEAD TROUGH EJECTING THIS MORNING...MOISTURE MAY 
THIN ENOUGH TO ALLOW SOME HEATING ALONG AND NEAR THE INTERSTATE 35 
CORRIDOR. STRONG FORCING WILL BEGIN TO ARRIVE FROM THE WEST THIS 
AFTERNOON...AND THERE MAY BE A PERIOD IN WHICH WE SEE NEAR SURFACE 
BASED STORMS...WITH PLENTY OF SHEAR...AND SUFFICIENT INSTABILITY.

ONCE THE SYSTEM EXITS THURSDAY NIGHT...ARCTIC COLD WILL SETTLE IN 
FOR SEVERAL DAYS. THE NEXT UPPER LEVEL DISTURBANCE WILL APPROACH 
EARLY NEXT WEEK...AND A CURSORY LOOK AT THE MODELS WOULD STILL 
SUPPORT A CHANCE OF RAIN OR SNOW. WE LET THE GFS HANDLE MOST OF THE 
EXTENDED FORECAST GRIDS...BUT DID PREFER THE FASTER TIMING OF THE 
ECMWF WITH THIS LOWER AMPLITUDE WAVE ARRIVING EARLIER NEXT WEEK.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  52  31  32  18 /  50  90  90  10 
HOBART OK         48  29  36  21 /  30  70  50   0 
WICHITA FALLS TX  65  34  41  25 /  30  90  40   0 
GAGE OK           35  21  32  12 /  70  60  30   0 
PONCA CITY OK     47  30  31  12 /  70  70  90  40 
DURANT OK         66  40  43  23 /  70  90  70  10 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WATCH FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON 
     FOR OKZ007-008-012-013-018>020-024>030.

     WINTER WEATHER ADVISORY FROM 6 PM THIS EVENING TO 6 PM CST 
     THURSDAY FOR OKZ004>006-009>011-014>016-021.

     WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM CST 
     THURSDAY FOR OKZ017-022-023-033>038.

TX...NONE.
&&

$$

02/22

Dec 23 - 500 AM - Hazardous Weather Outlook

Jump To Top

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
500 AM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-231800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
500 AM CST WED DEC 23 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF CENTRAL 
AND SOUTHEAST OKLAHOMA THIS AFTERNOON AND EVENING. THE SLIGHT RISK 
IS GENERALLY EAST OF AN ARDMORE TO CHANDLER LINE. LARGE HAIL AND 
DAMAGIN WINDS WILL BE THE MAIN THREATS...ALTHOUGH AN ISOLATED 
TORNADO CAN NOT BE RULED OUT.   

DISCUSSION...
AN UNSEASONABLY MILD AND INCREASINGLY MOIST AIRMASS WILL REMAIN IN 
PLACE AHEAD OF A NEARLY STATIONARY FRONT FROM NORTH CENTRAL OKLAHOMA 
INTO WESTERN NORTH TEXAS TODAY. SCATTERED THUNDERSTORMS WILL 
POSSIBLE OVER PARTS OF SOUTHEAST OKLAHOMA THIS MORNING AS AN UPPER 
LEVEL DISTURBANCE MOVES NORTHEASTWARD ACROSS OKLAHOMA AND NORTH 
TEXAS. SOME SMALL HAIL WILL BE POSSIBLE FROM THE STRONGER STORMS BUT 
ORGANIZED SEVERE STORMS ARE NOT EXPECTED. THE THUNDERSTORMS ARE 
EXPECTED TO SHIFT EAST OF THE AREA LATER THIS MORNING. ADDITIONAL 
SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP NEAR THE FRONT AS IT 
BEGINS TO ACCELERATE SOUTHEASTWARD THIS AFTERNOON.  WEAK TO MODERATE 
INSTABILITY COMBINED WITH STRENGTENING WIND SHEAR PROFILES WILL BE 
FAVORABLE FOR THE DEVELOPMENT OF SEVERE STORMS...INCLUDING 
SUPECELLS. LARGE HAIL AND DAMAGING WINDS WILL BE THE MAIN 
THREATS...ALTHOUGH AN ISOLATED TORNADO CAN NOT BE RULED OUT IN SOUTH 
CENTRAL AND SOUTHEAST OKLAHOMA. THE THREAT FOR SEVERE STORMS WILL 
CONTINUE INTO THE EVENING HOURS UNTIL THE FRONT CLEARS THE AREA. 
   
PROBABILITY TABLE...
VALID THROUGH 700 AM CST THURSDAY DEC 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT. 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...40 PERCENT.

OTHER HAZARDOUS WEATHER...
WINTER WEATHER IS EXPECTED TO DEVELOP LATE TONIGHT AND CONTINUE INTO 
THURSDAY AS THE STRONG UPPER LEVEL STORM SYSTEM MOVES FROM WEST 
TEXAS INTO MISSOURI. A WINTER STORM WATCH IS IN EFFECT FOR PARTS OF 
NORTH CENTRAL AND CENTRAL OKLAHOMA AND A WINTER WEATHER ADVISORY IS 
IN EFFECT FOR MUCH OF WESTERN OKLAHOMA TONIGHT AND THURSDAY.       

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...  

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.  

OTHER HAZARDOUS WEATHER...
COLD TEMPERATURES...STRONG WINDS AND LOW WIND CHILL READINGS WILL 
PREVAIL AREAWIDE ON THURSDAY. ACCUMULATING SNOW WILL BE 
POSSIBLE...MAINLY OVER PARTS OF CENTRAL AND NORTH CENTRAL OKLAHOMA.  
COLD TEMPERATURES WILL CONTINUE INTO THE EARLY PART OF NEXT WEEK. 

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON 
TODAY.

$$

02/22

Dec 23 - 1145 AM - Hazardous Weather Outlook

Jump To Top

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1145 AM CST WED DEC 23 2009

OKZ004>048-050>052-TXZ083>090-241100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1145 AM CST WED DEC 23 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT...

THUNDERSTORM OUTLOOK...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF CENTRAL 
AND SOUTHEAST OKLAHOMA THIS AFTERNOON AND EVENING. THE SLIGHT RISK 
IS GENERALLY EAST OF AN ARDMORE TO CHANDLER LINE. LARGE HAIL AND 
DAMAGING WINDS WILL BE THE MAIN THREATS...ALTHOUGH AN ISOLATED 
TORNADO CAN NOT BE RULED OUT.   

DISCUSSION...
AN UNSEASONABLY MILD AND INCREASINGLY MOIST AIRMASS WILL REMAIN IN 
PLACE AHEAD OF A COLD FRONT...WHICH WAS LOCATED FROM NEAR CHANDLER 
TO PAULS VALLEY TO HENRIETTA TEXAS. SCATTERED THUNDERSTORMS ARE 
EXPECTED TO DEVELOP NEAR THE FRONT AS IT BEGINS TO ACCELERATE 
SOUTHEASTWARD THIS AFTERNOON. WEAK TO MODERATE INSTABILITY COMBINED 
WITH STRENGTHENING WIND SHEAR PROFILES WILL BE FAVORABLE FOR THE 
DEVELOPMENT OF SEVERE STORMS...INCLUDING SUPERCELLS. LARGE HAIL AND 
DAMAGING WINDS WILL BE THE MAIN THREATS...ALTHOUGH AN ISOLATED 
TORNADO CAN NOT BE RULED OUT IN SOUTH CENTRAL AND SOUTHEAST 
OKLAHOMA. THE THREAT FOR SEVERE STORMS WILL CONTINUE INTO THE 
EVENING HOURS UNTIL THE FRONT CLEARS THE AREA. 
   
PROBABILITY TABLE...
VALID THROUGH 700 AM CST THURSDAY DEC 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT. 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...40 PERCENT.

OTHER HAZARDOUS WEATHER...
WINTER WEATHER IS EXPECTED TO DEVELOP LATE TONIGHT AND CONTINUE 
THROUGH THURSDAY AS THE STRONG UPPER LEVEL STORM SYSTEM MOVES FROM 
WEST TEXAS INTO MISSOURI. A WINTER STORM WATCH IS IN EFFECT FOR 
PARTS OF NORTH CENTRAL AND CENTRAL OKLAHOMA AND A WINTER WEATHER 
ADVISORY IS IN EFFECT FOR MUCH OF WESTERN OKLAHOMA TONIGHT AND 
THURSDAY.       

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...  

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.  

OTHER HAZARDOUS WEATHER...
SNOW... COLD TEMPERATURES... STRONG WINDS AND LOW WIND CHILL 
READINGS WILL PREVAIL AREA-WIDE ON THURSDAY. ACCUMULATING SNOW WILL 
BE LIKELY ACROSS A GOOD PORTION OF OKLAHOMA AND WESTERN NORTH TEXAS. 
STRONG NORTH WINDS WILL RESULT IN BLOWING SNOW... RESTRICTED 
VISIBILITIES AND DRIFTING OF THE SNOW. COLD TEMPERATURES WILL 
CONTINUE INTO THE EARLY PART OF NEXT WEEK. 

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM 
THURSDAY.

$$

02/22/30

Dec 23 - 247 PM - Winter Weather Message

Jump To Top

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
247 PM CST WED DEC 23 2009

OKZ004>006-009>011-014>016-021-240500-
/O.UPG.KOUN.WW.Y.0008.091224T0000Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
CUSTER-BECKHAM-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA...WEATHERFORD...CLINTON...
ELK CITY...SAYRE
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 PM CST THURSDAY. THE WINTER WEATHER ADVISORY IS
NO LONGER IN EFFECT.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION OF UP TO 4 INCHES IN NORTHWEST AND WESTERN
  OKLAHOMA AND 8 INCHES IN NORTH CENTRAL OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. THERE
  IS ALSO THE POSSIBILITY OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS WILL MAKE
TRAVEL HAZARDOUS.

&&

$$

OKZ017-022-023-033>035-240500-
/O.UPG.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0000Z-091225T0000Z/
BLAINE-WASHITA-CADDO-HARMON-GREER-KIOWA-
INCLUDING THE CITIES OF...WATONGA...CORDELL...ANADARKO...HOLLIS...
MANGUM...HOBART
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 PM CST THURSDAY. THE WINTER WEATHER ADVISORY IS
NO LONGER IN EFFECT.

* TIMING: LATE TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION UP TO 4 INCHES ACROSS WEST CENTRAL AND
  SOUTHWEST OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. THERE IS
  ALSO A CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS WILL MAKE
TRAVEL HAZARDOUS.

&&

$$

OKZ007-012-018-024-240500-
/O.UPG.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0000Z-091225T0000Z/
GRANT-GARFIELD-KINGFISHER-CANADIAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...KINGFISHER...YUKON...
EL RENO...MUSTANG
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM 6 PM
THIS EVENING TO 6 PM CST THURSDAY. THE WINTER STORM WATCH IS NO
LONGER IN EFFECT.

* TIMING: EARLY THURSDAY MORNING THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION OF UP TO 5 INCHES IN CENTRAL OKLAHOMA AND 8
  INCHES IN NORTH CENTRAL OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
  BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. THERE IS ALSO A
  CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS WILL MAKE
TRAVEL HAZARDOUS.

&&

$$

OKZ008-013-019-020-025-026-240500-
/O.UPG.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
/O.NEW.KOUN.WS.W.0004.091224T0600Z-091225T0000Z/
KAY-NOBLE-LOGAN-PAYNE-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...GUTHRIE...
STILLWATER...OKLAHOMA CITY...CHANDLER
247 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 6 PM
CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT FROM
MIDNIGHT TONIGHT TO 6 PM CST THURSDAY. THE WINTER STORM WATCH IS
NO LONGER IN EFFECT.

* TIMING: NEAR SUNRISE THURSDAY THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION UP TO 5 INCHES IN CENTRAL OKLAHOMA AND 8
  INCHES IN NORTH CENTRAL OKLAHOMA.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
  BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. THERE IS ALSO A
  CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ031-032-042-043-047-048-050>052-240500-
/O.EXB.KOUN.WW.Y.0008.091224T1200Z-091225T0000Z/
SEMINOLE-HUGHES-PONTOTOC-COAL-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...SEMINOLE...HOLDENVILLE...ADA...
COALGATE...TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM TO 6 PM CST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM 6 AM TO 6 PM CST THURSDAY.

* TIMING: THURSDAY MORNING AND AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3 
  INCHES. 

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. FREEZING
  RAIN WILL ALSO BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW OR FREEZING
RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

OKZ027>030-240500-
/O.UPG.KOUN.WS.A.0004.091224T0900Z-091225T0000Z/
/O.EXA.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-
INCLUDING THE CITIES OF...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY. THE WINTER STORM WATCH
IS NO LONGER IN EFFECT.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH EARLY THURSDAY
  EVENING

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
  INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
  BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. FREEZING RAIN IS
  ALSO POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW OR FREEZING
RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

OKZ039>041-044>046-TXZ083>090-240500-
/O.EXA.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
STEPHENS-GARVIN-MURRAY-COTTON-JEFFERSON-CARTER-HARDEMAN-FOARD-
WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...DUNCAN...PAULS VALLEY...SULPHUR...
WALTERS...WAURIKA...ARDMORE...QUANAH...CHILLICOTHE...CROWELL...
VERNON...WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...
ARCHER CITY...HOLLIDAY...LAKESIDE CITY...HENRIETTA
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO
6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH THURSDAY
  AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
  INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. FREEZING
  RAIN WILL ALSO BE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW OR FREEZING
RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY
ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING.

&&

$$

OKZ036>038-240500-
/O.CON.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
JACKSON-TILLMAN-COMANCHE-
INCLUDING THE CITIES OF...ALTUS...FREDERICK...LAWTON
247 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 6 PM CST THURSDAY...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 PM CST THURSDAY. 

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH THURSDAY
  AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION UP TO 3
  INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. THERE IS
  ALSO A CHANCE OF FREEZING RAIN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

Dec 23 - 351 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
351 PM CST WED DEC 23 2009

.DISCUSSION...
HAVE UPGRADED THE NORTHERN AND WESTERN AREAS OF OKLAHOMA TO A
WINTER STORM WARNING AND ALREADY HAVE ISSUED THE WSW. 12Z MODELS
CONTINUED THE OVERNIGHT TREND OF A WETTER/SNOWIER FORECAST WITH
THE EXPECTED TRACK OF THE UPPER LOW AND LESS LIKELIHOOD OF THE DRY
SLOT SLOWING DOWN THE SHOW. ON THE POSITIVE SIDE... THE PRIMARY
NUMERIC MODELS ARE ON THE SAME PAGE WITH THE TIMING OF THE
SWITCHOVER FROM RAIN TO SNOW. BOTH THE NAM AND GFS TIME-HEIGHT
SECTIONS DO SHOW BRIEF PERIODS OF SOMEWHAT DRIER AIR IN THE
DENDRITIC GROWTH TEMPERATURES ELEVATIONS... SO THERE COULD BE A
BRIEF PERIOD OF FREEZING RAIN OR FREEZING DRIZZLE. SLEET IS NOT
OUT OF THE QUESTION IN NORTHERN OKLAHOMA BUT HAVE NOT INCLUDED
THIS IN THE PACKAGE SINCE IT WOULD BE A MINOR ISSUE COMPARED TO
THE SNOW/FREEZING PRECIP. AS COLD AIR ADVECTS INTO THE AREA... WE
CAN SEE THE PROFILE SUPPORTING SNOW IN NORTHWEST OKLAHOMA EARLY
THIS EVENING... TO THE ENID TO FORT COBB TO VERNON AREAS BY 06Z...
AND TO STILLWATER TO NORMAN TO WICHITA FALLS BY ABOUT 12Z.

OF COURSE THE MODELS DO HAVE DIFFERING OPINIONS ON SNOW AMOUNTS
AND THE AXIS OF HEAVIEST SNOW. THINK THE 12Z GFS WAS TOO
AGGRESSIVE AND HAVE GENERALLY GONE BETWEEN THE FORECAST AMOUNTS
FROM THE GFS AND NAM... ALTHOUGH SOMEWHAT ON THE LIGHTER SIDE
GIVEN THE OVERALL PATTERN EVOLUTION AND THE TENDENCY FOR THE MODEL
SNOW GRID FIELDS TO BEGIN ACCUMULATING SNOW TOO EARLY WHEN THE
PRECIP IS STILL FALLING AS RAIN INITIALLY. BUT THE FORECAST AMOUNTS
ARE STILL ENOUGH TO JUSTIFY A WINTER STORM WARNING ACROSS NORTHERN
PORTIONS OF THE AREA. THE STRONG WINDS ON THE BACK SIDE OF THE
SURFACE LOW WILL BE STRONG AND GUSTY TONIGHT INTO TOMORROW CAUSING
BLOWING SNOW AND NEAR-BLIZZARD CONDITIONS. AGAIN THINK THE GFS IS
A LITTLE TOO AGGRESSIVE WITH WIND SPEEDS GIVEN IT'S DEEPER SURFACE
LOW FARTHER WEST THAN OTHER MODELS... BUT IT WILL STILL BE QUITE
WINDY. PRECIP WILL DIMINISH ACROSS MUCH OF THE AREA TUESDAY NIGHT
ALTHOUGH LINGERING SNOW WILL STILL BE POSSIBLE IN THE NORTH INTO
FRIDAY NIGHT AS UPPER LOW ONLY SLOWLY MOVES FROM KANSAS TOWARD
IOWA. 

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  31  32  19  35 /  90  90  30  10 
HOBART OK         29  31  20  35 /  90  70  10   0 
WICHITA FALLS TX  34  36  24  40 /  90  60  10  10 
GAGE OK           21  26  12  30 /  70  50  10   0 
PONCA CITY OK     30  30  12  29 /  90  90  50  20 
DURANT OK         40  41  23  39 /  90  80  20  10 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING FROM MIDNIGHT TONIGHT TO 6 PM CST THURSDAY 
     FOR OKZ008-013-019-020-025-026.

     WINTER STORM WARNING UNTIL 6 PM CST THURSDAY FOR OKZ004>007-
     009>012-014>018-021>024-033>035.

     WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM CST 
     THURSDAY FOR OKZ027>030-036>041-044>046.

     WINTER WEATHER ADVISORY FROM 6 AM TO 6 PM CST THURSDAY FOR 
     OKZ031-032-042-043-047-048-050>052.

TX...WINTER WEATHER ADVISORY FROM MIDNIGHT TONIGHT TO 6 PM CST 
     THURSDAY FOR TXZ083>090.

&&

$$

Dec 23 - 455 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
455 PM CST WED DEC 23 2009 

OKZ004>048-050>052-TXZ083>090-240000- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
455 PM CST WED DEC 23 2009 

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT... EXTENDING THROUGH THE ATOKA AND DURANT AREAS JUST 
BEFORE 5 PM... WILL MOVE SLOWLY EAST THROUGH EARLY EVENING. WINDS 
WILL SHIFT TO THE NORTHWEST AND TEMPERATURES WILL FALL QUICKLY 
THROUGH THE 60S INTO THE 50S IN THESE AREAS BY 7 PM. THERE IS STILL 
A SLIGHT CHANCE OF THUNDERSTORMS DEVELOPING THIS EVENING ALONG THE 
FRONT IN SOUTHEASTERN OKLAHOMA... BUT THE RISK OF SEVERE WEATHER 
WILL DIMINISH ONCE THE FRONT PASSES AT ANY GIVEN LOCATION. 

EXCEPT FOR THE POSSIBILITY OF SOME PATCHY LIGHT RAIN OR DRIZZLE... 
MOST OF WESTERN NORTH TEXAS AND WESTERN AND CENTRAL OKLAHOMA WILL 
REMAIN DRY THROUGH MID EVENING. RADAR INDICATES RAIN INCREASING IN 
COVERAGE OVER MUCH OF WEST TEXAS AND SPREADING SLOWLY EAST... AHEAD 
OF A STRONG STORM SYSTEM CENTERED OVER CENTRAL NEW MEXICO. 
TEMPERATURES ARE FALLING IN WEST TEXAS... AND IT APPEARS LIKELY THAT 
RAIN WILL BEGIN CHANGING TO SNOW IN THAT AREA BY MID EVENING. AS THE 
PRECIPITATION SPREADS EAST... RAIN MAY BEGIN ON PARTS OF WESTERN 
OKLAHOMA AND WESTERN NORTH TEXAS LATE THIS EVENING... MOST LIKELY 
AFTER 8 OR 9 PM. WITH TEMPERATURES CONTINUING TO FALL THIS 
EVENING... ANY RAIN IN THESE AREAS WILL LIKELY MIX WITH OR CHANGE TO 
SNOW BETWEEN 9 PM AND MIDNIGHT. BUT UNTIL 9 PM... TRAVEL PROBLEMS 
ARE NOT ANTICIPATED.

$$

24

Dec 23 - 550 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
550 PM CST WED DEC 23 2009

.AVIATION...
A STRONG STORM SYSTEM WILL TRACK NE FROM CENTRAL TX THIS
EVENING... TO CENTRAL AR BY 18Z TOMORROW. PRECIPITATION IS
EXPECTED TO DEVELOP AND SPREAD NE ACROSS TX/OK TONIGHT AND THU...
WHILE COLDER AIR ADVANCES SE. RA AND DZ WILL CHANGE OVER TO SN
OVERNIGHT AT ALL TAF SITES... AND A FEW HOURS OF FZDZ... FZRA...
AND/OR PL WILL BE POSSIBLE DURING THE TRANSITION PERIOD. STRONG
WINDS WILL CAUSE BLSN AT ALL SITES AFTER SN BEGINS TO
ACCUMULATE... AND VISIBILITIES WILL BE DEPENDENT MAINLY ON HOW
MUCH SN FALLS NEAR/UPSTREAM OF EACH TAF SITE.

Dec 23 - 655 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
655 PM CST WED DEC 23 2009 

OKZ004>048-050>052-TXZ083>090-240300- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
655 PM CST WED DEC 23 2009 

.REGIONAL WEATHER DISCUSSION...

A COLD FRONT... JUST EAST OF ATOKA AND DURANT EARLY THIS EVENING...  
WILL MOVE SLOWLY EAST OUT OF ATOKA AND BRYAN COUNTIES BY 9 PM. WINDS 
WILL SHIFT TO THE NORTH AND TEMPERATURES WILL FALL INTO THE 50S. 
THERE IS STILL A SLIGHT CHANCE OF THUNDERSTORMS DEVELOPING THIS 
EVENING NEAR THE FRONT... BUT THE RISK OF SEVERE WEATHER WILL 
DIMINISH ONCE THE FRONT PASSES AT ANY GIVEN LOCATION. 

MOST OF WESTERN NORTH TEXAS AND WESTERN AND CENTRAL OKLAHOMA WILL 
REMAIN DRY THROUGH MID EVENING. RADAR INDICATES RAIN INCREASING IN 
COVERAGE OVER MUCH OF WEST TEXAS AND SPREADING SLOWLY EAST... AHEAD 
OF A STRONG STORM SYSTEM CENTERED OVER NEW MEXICO. TEMPERATURES ARE 
FALLING IN WEST TEXAS... AND IT APPEARS LIKELY THAT RAIN WILL BEGIN 
CHANGING TO SNOW IN THAT AREA BY MID EVENING. AS THE PRECIPITATION 
SPREADS EAST... RAIN MAY BEGIN IN PARTS OF WESTERN OKLAHOMA AND 
ESPECIALLY OVER WESTERN NORTH TEXAS LATER THIS EVENING... MOST 
LIKELY AFTER 9 PM. WITH TEMPERATURES CONTINUING TO FALL... ANY RAIN 
IN THESE AREAS WILL LIKELY CHANGE TO SNOW BY MIDNIGHT. BUT UNTIL 9 
PM... TRAVEL PROBLEMS ARE NOT ANTICIPATED.

$$

24

Dec 23 - 900 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
900 PM CST WED DEC 23 2009 

OKZ004>048-050>052-TXZ083>090-240300- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
900 PM CST WED DEC 23 2009 

.REGIONAL WEATHER DISCUSSION...

RAIN... AND ISOLATED THUNDERSTORMS...  WILL INCREASE LATE THIS 
EVENING OVER WESTERN PARTS OF NORTH TEXAS AND PARTS OF SOUTHWESTERN 
OKLAHOMA. THE RAIN WILL MIX WITH OR CHANGE TO SNOW IN MANY OF THESE 
AREAS BY MIDNIGHT. 

RADAR AT 9 PM INDICATED A LARGE EXPANDING AREA OF PRECIPITATION 
SPREADING EAST FROM MUCH OF WESTERN NORTH TEXAS. THE LEADING EDGE AT 
9 PM WAS FROM NEAR CHEYENNE... TO ALTUS... TO VERNON... TO SEYMOUR. 
TEMPERATURES IN THESE AREAS GENERALLY WERE IN THE 30S AND LOWER 40S 
AS OF MID EVENING... BUT WERE FALLING. SO WHILE MANY AREAS WILL 
START AS RAIN... A CHANGEOVER TO SNOW IS LIKELY IN MOST AREAS BY 
MIDNIGHT. INCREASING NORTH WINDS MAY RESULT IN BLOWING AND DRIFTING 
OF ANY ACCUMULATING SNOW LATE TONIGHT OVER SOUTHWESTERN OKLAHOMA AND 
WESTERN NORTH TEXAS. 

AS THE PRECIPITATION CONTINUES TO SPREAD EAST AND TEMPERATURES 
CONTINUE TO FALL... MORE OF THE PRECIPITATION WILL FALL AS SNOW. 
ALTHOUGH PRECIPITATION IN CENTRAL OKLAHOMA MAY BEGIN AS RAIN LATER 
TONIGHT... THE RAIN WILL CHANGE OVER TO SNOW OVER MOST OF THE MIDDLE 
THIRD OF OKLAHOMA BY EARLY TO MID MORNING THURSDAY. STRONG NORTH 
WINDS WILL LIKELY LEAD TO BLOWING SNOW AND DETERIORATING TRAVEL 
CONDITIONS ACROSS MANY PARTS OF THE CENTRAL THIRD OF OKLAHOMA 
BEGINNING WITHIN A FEW HOURS OF DAYBREAK THURSDAY MORNING.  

$$

24

Dec 23 - 1052 PM - Winter Weather Message

Jump To Top

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1052 PM CST WED DEC 23 2009

OKZ004>006-009>011-014-015-241300-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
/O.NEW.KOUN.WW.Y.0009.091224T0452Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
1052 PM CST WED DEC 23 2009

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 PM CST THURSDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER
WEATHER ADVISORY FOR SNOW AND BLOWING SNOW...WHICH IS IN EFFECT
UNTIL 6 PM CST THURSDAY FOR MUCH OF NORTHWESTERN OKLAHOMA. THE WINTER
STORM WARNING FOR NORTHWESTERN OKLAHOMA IS NO LONGER IN EFFECT.

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION OF UP TO 4 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR
FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR
SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE
DRIVING.

&&

$$

OKZ027>030-036>041-044>046-TXZ083>090-241300-
/O.UPG.KOUN.WW.Y.0008.091224T0600Z-091225T0000Z/
/O.EXA.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-JACKSON-TILLMAN-COMANCHE-
STEPHENS-GARVIN-MURRAY-COTTON-JEFFERSON-CARTER-HARDEMAN-FOARD-
WILBARGER-WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...ALTUS...FREDERICK...LAWTON...DUNCAN...PAULS VALLEY...
SULPHUR...WALTERS...WAURIKA...ARDMORE...QUANAH...CHILLICOTHE...
CROWELL...VERNON...WICHITA FALLS...MUNDAY...KNOX CITY...SEYMOUR...
ARCHER CITY...HOLLIDAY...LAKESIDE CITY...HENRIETTA
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT UNTIL 6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS EXPANDED THE WINTER
STORM WARNING TO INCLUDE ALL OF WESTERN NORTH TEXAS AND SOUTHERN
OKLAHOMA. THE WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM CST
THURSDAY. THE WINTER WEATHER ADVISORY FOR WESTERN NORTH TEXAS AND
SOUTHERN OKLAHOMA IS NO LONGER IN EFFECT.

* TIMING: AROUND MIDNIGHT THURSDAY MORNING THROUGH THURSDAY 
  AFTERNOON. 

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION OF 4 TO 8
  INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ031-032-042-043-047-048-050>052-241300-
/O.UPG.KOUN.WW.Y.0008.091224T1200Z-091225T0000Z/
/O.EXA.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
SEMINOLE-HUGHES-PONTOTOC-COAL-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...SEMINOLE...HOLDENVILLE...ADA...
COALGATE...TISHOMINGO...ATOKA...MARIETTA...MADILL...DURANT
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING IN EFFECT UNTIL 6 PM CST THURSDAY...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A WINTER STORM
WARNING FOR SNOW AND BLOWING SNOW... WHICH IS IN EFFECT UNTIL 6
PM CST THURSDAY FOR MUCH OF SOUTHEASTERN AND EAST CENTRAL
OKLAHOMA. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT.

* TIMING: THURSDAY MORNING AND AFTERNOON.

* MAIN IMPACT: SNOW AND BLOWING SNOW WITH ACCUMULATION OF 4 TO 8
  INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS ON THURSDAY...WITH 
  SOME BLOWING SNOW AND VERY LOW WIND CHILL TEMPERATURES. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ008-013-019-020-025-026-241300-
/O.EXT.KOUN.WS.W.0004.091224T0452Z-091225T0000Z/
KAY-NOBLE-LOGAN-PAYNE-OKLAHOMA-LINCOLN-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...GUTHRIE...
STILLWATER...OKLAHOMA CITY...CHANDLER
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 6 PM CST THURSDAY...

THE WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM CST THURSDAY FOR
MOST OF CENTRAL AND NORTH CENTRAL OKLAHOMA.

* TIMING: NEAR SUNRISE THURSDAY THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION OF 4 TO 8 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN 
  BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. THERE IS ALSO A 
  CHANCE OF FREEZING RAIN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO
POSSIBLE.  THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.

&&

$$

OKZ007-012-016>018-021>024-033>035-241300-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
GRANT-GARFIELD-CUSTER-BLAINE-KINGFISHER-BECKHAM-WASHITA-CADDO-
CANADIAN-HARMON-GREER-KIOWA-
INCLUDING THE CITIES OF...MEDFORD...ENID...WEATHERFORD...
CLINTON...WATONGA...KINGFISHER...ELK CITY...SAYRE...CORDELL...
ANADARKO...YUKON...EL RENO...MUSTANG...HOLLIS...MANGUM...HOBART
1052 PM CST WED DEC 23 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST
THURSDAY...

A WINTER STORM WARNING IS IN EFFECT UNTIL 6 PM CST THURSDAY FOR
MOST OF WEST CENTRAL... CENTRAL... AND SOUTHERN OKLAHOMA.

* TIMING: EARLY THURSDAY MORNING THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING SNOW
  AND ACCUMULATION OF 4 TO 8 INCHES.

* OTHER IMPACTS: INCREASINGLY BLUSTERY WINDS...RESULTING IN
  BLOWING SNOW AND LOW WIND CHILL TEMPERATURES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW AND
BLOWING SNOW ARE EXPECTED. STRONG WINDS ARE ALSO EXPECTED. THIS
WILL MAKE TRAVEL HAZARDOUS.

&&

$$

Dec 23 - 1100 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1100 PM CST WED DEC 23 2009 

OKZ004>048-050>052-TXZ083>090-240700- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1100 PM CST WED DEC 23 2009 

.REGIONAL WEATHER DISCUSSION...

RAIN... AND ISOLATED THUNDERSTORMS... WILL INCREASE LATE THIS 
EVENING OVER WESTERN PARTS OF NORTH TEXAS AND PARTS OF SOUTHWESTERN 
OKLAHOMA. THE RAIN WILL MIX WITH OR CHANGE TO SNOW IN MANY OF THESE 
AREAS BY MIDNIGHT. 

RADAR AT 11 PM INDICATED AN INCREASING AREA OF PRECIPITATION...  
INCLUDING A FEW THUNDERSTORMS... SPREADING NORTHEAST FROM MUCH OF 
WESTERN NORTH TEXAS. THE LEADING EDGE AT 11 PM WAS FROM NEAR 
CHEYENNE... TO FREDERICK... TO WICHITA FALLS. TEMPERATURES IN THESE 
AREAS GENERALLY WERE IN THE 30S TO AROUND 40 AS OF LATE EVENING... 
BUT WERE FALLING. SO WHILE MANY AREAS WILL START AS RAIN... A 
CHANGEOVER TO SLEET AND SNOW IS LIKELY IN MOST AREAS BY 1 AM. 
INCREASING NORTH WINDS MAY RESULT IN BLOWING AND DRIFTING OF ANY 
ACCUMULATING SNOW LATE TONIGHT OVER SOUTHWESTERN OKLAHOMA AND 
WESTERN NORTH TEXAS. 

AS THE PRECIPITATION CONTINUES TO SPREAD NORTHEAST AND TEMPERATURES 
CONTINUE TO FALL... MORE OF THE PRECIPITATION WILL FALL AS SNOW. 
ALTHOUGH PRECIPITATION IN CENTRAL OKLAHOMA MAY BEGIN AS RAIN LATER 
TONIGHT... THE RAIN WILL CHANGE OVER TO SNOW OVER MOST OF THE MIDDLE 
THIRD OF OKLAHOMA BY EARLY TO MID MORNING THURSDAY. STRONG NORTH 
WINDS WILL LIKELY LEAD TO BLOWING SNOW AND DETERIORATING TRAVEL 
CONDITIONS ACROSS MANY PARTS OF THE CENTRAL THIRD OF OKLAHOMA 
BEGINNING WITHIN A FEW HOURS OF DAYBREAK THURSDAY MORNING.  

$$

24

Dec 23 - 1132 PM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1132 PM CST WED DEC 23 2009

.AVIATION...
A LARGE AREA OF RA... PL... AND SN ACROSS SW OK AND WESTERN NORTH
TX IS THE INITIAL SURGE OF PRECIPITATION ASSOCIATED WITH THE
APPROACHING WINTER STORM SYSTEM. ADDITIONAL AREAS OF MAINLY SN ARE
EXPECTED TO DEVELOP OVERNIGHT AND THU MORNING. ACCUMULATING SN IS
LIKELY... AND WITH STRONG WINDS... BLSN IS A NEAR CERTAINTY
WHEREVER SNOW DOES ACCUMULATE MORE THAN AN INCH OR SO. THERE IS
STILL SOME SIGNIFICANT UNCERTAINTY REGARDING VSBYS THU IN THE BLSN...
BUT IFR VSBYS ARE PROBABLE AT ALL SITES BUT KGAG AND KWWR. STRONG
DOWNWARD MOTION IS EXPECTED AFTER SUNSET THU... WHICH SHOULD CLEAR
THE SKY QUICKLY FROM WEST TO EAST. DIMINISHING WINDS WILL ALLOW
VSBYS TO IMPROVE SIGNIFICANTLY AFTER SUNSET.

Dec 24 - 100 AM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
100 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-240900- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
100 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

RADAR AT 1 AM INDICATED AN INCREASING AREA OF PRECIPITATION...   
SPREADING ACROSS WESTERN NORTH TEXAS AND ADJACENT AREAS OF WESTERN 
OKLAHOMA. THE LEADING EDGE AT 1 AM WAS FROM NEAR CHEYENNE... TO 
LAWTON... TO WAURIKA. THE PRECIPITATION HAS CHANGED TO SNOW OVER FAR 
WESTERN PARTS OF OKLAHOMA AND NORTH TEXAS...GENERALLY WEST OF A 
CORDELL...TO ALTUS TO SEYMOUR TEXAS LINE. EAST OF THAT LINE COLD 
RAIN PREVAILED. ISOLATED THUNDERSTORMS WERE ALSO OCCURRING NEAR THE 
RED RIVER VALLEY IN SOUTH CENTRAL OKLAHOMA.  

THE PRECIPITATION WILL CONTINUE TO SPREAD NORTHEAST INTO CENTRAL 
OKLAHOMA OVERNIGHT. AS THE PRECIPITATION CONTINUES TO SPREAD 
NORTHEAST AND TEMPERATURES CONTINUE TO FALL...MORE OF THE 
PRECIPITATION WILL FALL AS SNOW. THE PRECIPITATION IS EXPECTED TO 
CHANGE TO SNOW OVER MOST WESTERN NORTH TEXAS AND THE WESTERN THIRD 
OF OKLAHOMA BY 3 AM TO 4 AM...AND THROUGH THE MIDDLE THIRD OF 
OKLAHOMA BY EARLY TO MID MORNING THURSDAY. STRONG NORTH WINDS WILL 
LIKELY LEAD TO BLOWING SNOW AND DETERIORATING TRAVEL CONDITIONS 
ACROSS MANY PARTS OF THE CENTRAL THIRD OF OKLAHOMA BEGINNING WITHIN 
A FEW HOURS OF DAYBREAK THURSDAY MORNING.  

$$

24/II

Dec 24 - 130 AM - Hazardous Weather Outlook

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
130 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241100-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
130 AM CST THU DEC 24 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...OVERNIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL BE POSSIBLE...MAINLY OVER PARTS OF 
SOUTHERN OKLAHOMA OVERNIGHT. NO SEVERE STORMS ARE EXPECTED.    

DISCUSSION...
A STRONG UPPER LEVEL STORM SYSTEM WILL MOVE SLOWLY EASTWARD ACROSS 
WEST TEXAS OVERNIGHT. AS THIS SYSTEM... MOVES EASTWARD WIDESPREAD 
PRECIPITATION WILL SPREAD ACROSS WESTERN NORTH TEXAS AND OKLAHOMA. 
MEANWHILE COLDER AIR WILL CONTINUE TO SURGE SOUTHWARD ACROSS THE 
AREA. RAIN WILL GRADUALLY CHANGE TO SNOW OVER MUCH OF WESTERN NORTH 
TEXAS AND THE WESTERN HALF OF OKLAHOMA BY SUNRISE AS THE COLDER AIR 
DEEPENS. A FEW THUNDERSTORMS WILL BE POSSIBLE OVERNIGHT...MAINLY IN 
SOUTHERN OKLAHOMA. INSTABILITY WILL REMAIN LIMITED AND NO SEVERE 
STORMS ARE EXPECTED. 
   
PROBABILITY TABLE...
VALID THROUGH 700 AM CST THURSDAY DEC 24.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT. 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
WINTER STORM WARNING ARE IN EFFECT OVERNIGHT AND INTO THURSDAY FOR 
WESTERN NORTH AND MUCH OF OKLAHOMA. SIGNIFICANT ACCUMULATIONS OF 
SNOW CAN BE EXPECTED...ESPECIALLY ACROSS WESTERN NORTH TEXAS AND    
THE SOUTHERN HALF OF OKLAHOMA.        

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...  

THUNDERSTORM OUTLOOK...
NO THUNDERSTORMS ARE EXPECTED.  

OTHER HAZARDOUS WEATHER...
SNOW... COLD TEMPERATURES... STRONG WINDS AND LOW WIND CHILL 
READINGS WILL PREVAIL AREA-WIDE ON THURSDAY. ACCUMULATING SNOW WILL 
BE LIKELY ACROSS A GOOD PORTION OF OKLAHOMA AND WESTERN NORTH TEXAS. 
STRONG NORTH WINDS WILL RESULT IN BLOWING SNOW... RESTRICTED 
VISIBILITIES AND DRIFTING OF THE SNOW. COLD TEMPERATURES WILL 
CONTINUE INTO THE EARLY PART OF NEXT WEEK. 

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM 
THURSDAY.

$$

02/22/30

Dec 24 - 230 AM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
230 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241000- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
230 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

PRECIPITATION CONTINUES TO EXPAND ACROSS WESTERN NORTH TEXAS AND 
MUCH OF WESTERN AND SOUTHERLY OKLAHOMA EARLY THIS MORNING. RAIN WAS 
THE PREDOMINANT PRECIPITATION TYPE GENERALLY SOUTH OF INTERSTATE 40 
AND EAST OF A FREDERICK TO HINTON LINE. A FEW THUNDERSTORMS WERE 
ALSO DEVELOPING OVER PARTS OF SOUTH CENTRAL OKLAHOMA. IN FAR WESTERN 
OKLAHOMA AND NORTH TEXAS THE RAIN HAD CHANGED TO SNOW...WHILE A 
MIXTURE OF RAIN...FREEZING RAIN...SLEET AND SNOW WAS FALLING IN AN 
AREA FROM AROUND ALTUS AND HOBART TO NEAR CLINTON. 
 
PRECIPITATION WILL CONTINUE TO EXPAND OVER SOUTHERN PLAINS EARLY 
THIS MORNING AS A STRONG UPPER LEVEL STORM SYSTEM MOVES SLOWLY 
EASTWARD THROUGH WEST TEXAS. AT THE SAME TIME...STRONG NORTH WINDS 
WILL CONTINUE TO PULL COLD AIR INTO THE AREA. WINTRY PRECIPITATION 
WILL CONTINUE OVER WESTERN PARTS OF OKLAHOMA AND NORTH TEXAS AND 
RAIN WILL GRADUALLY CHANGE TO A MIXTURE OF RAIN ...FREEZING 
RAIN...SLEET AND SNOW INTO PORTIONS OF CENTRAL OKLAHOMA EARLY THIS 
MORNING AS THE COLD AIR CONTINUES TO DEEPEN. FARTHER EAST...RAIN AND 
A FEW THUNDERSTORMS WILL PERSIST. DRIVING CONDITIONS WILL LIKELY 
BEGIN TO DETERIORATE THIS MORNING AS THE THE WINTER PRECIPITATION 
AREA EXPANDS. IN ADDITION THE COLD TEMPERATURES AND STRONG WINDS 
WILL RESULT IN LOW WIND CHILL VALUES.       

$$

II

Dec 24 - 330 AM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
330 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241100- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
330 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

PRECIPITATION CONTINUES TO EXPAND ACROSS WESTERN NORTH TEXAS AND 
MUCH OF WESTERN AND SOUTHERLY OKLAHOMA EARLY THIS MORNING AND 
ADVANCE OF A STRONG UPPER LEVEL STORM SYSTEM OVER WEST TEXAS. RAIN 
WAS THE PREDOMINANT PRECIPITATION TYPE GENERALLY SOUTH OF INTERSTATE 
40 AND EAST OF A FREDERICK TO HINTON LINE. IN FAR WESTERN OKLAHOMA 
AND NORTH TEXAS THE RAIN HAD CHANGED TO SNOW...WHILE A MIXTURE OF 
RAIN...FREEZING RAIN...SLEET AND SNOW WAS FALLING IN AN AREA FROM 
AROUND ALTUS AND HOBART TO NEAR CLINTON. 
 
PRECIPITATION WILL CONTINUE TO EXPAND NORTHEASTWARD THROUGH MUCH OF 
CENTRAL OKLAHOMA THIS MORNING AS THE UPPER LEVEL SYSTEM MOVES SLOWLY 
EASTWARD. AT THE SAME TIME...STRONG NORTH WINDS WILL CONTINUE TO 
PULL COLD AIR INTO THE AREA. A MIXTURE OF SNOW...FREEZING RAIN AND 
SLEET WILL CONTINUE EARLY THIS MORNING OVER FAR WESTERN PARTS OF 
OKLAHOMA AND NORTH TEXAS BEFORE GRADUALLY TRANSITIONING TO ALL SNOW. 
AS A RESULT ROADS IN THESE AREAS WILL BECOME SLICK AND HAZARDOUS. 
RAIN IN CENTRAL OKLAHOMA WILL GRADUALLY CHANGE TO FREEZING RAIN AND 
SLEET DURING THE MORNING AS THE COLDER AIR MOVES. THE WINTERY MIX 
WILL LIKELY REACH PARTS OF THE OKLAHOMA CITY METRO AREA AROUND OR 
SHORTLY AFTER SUNRISE.       

$$

II

Dec 24 - 417 AM - Winter Weather Message

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URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
417 AM CST THU DEC 24 2009

OKZ007-008-012-013-018>020-024>032-039>043-045>048-050>052-241900-
/O.EXT.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-KAY-GARFIELD-NOBLE-KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-
LINCOLN-GRADY-MCCLAIN-CLEVELAND-POTTAWATOMIE-SEMINOLE-HUGHES-
STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-JEFFERSON-CARTER-JOHNSTON-
ATOKA-LOVE-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
KINGFISHER...GUTHRIE...STILLWATER...YUKON...EL RENO...MUSTANG...
OKLAHOMA CITY...CHANDLER...CHICKASHA...PURCELL...NORMAN...MOORE...
SHAWNEE...SEMINOLE...HOLDENVILLE...DUNCAN...PAULS VALLEY...
SULPHUR...ADA...COALGATE...WAURIKA...ARDMORE...TISHOMINGO...
ATOKA...MARIETTA...MADILL...DURANT
417 AM CST THU DEC 24 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 10 PM CST THIS
EVENING...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 10 PM CST THIS
EVENING. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
  CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT
  SOUTHERN OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN
  LAWTON AND PAULS VALLEY.

* OTHER IMPACTS: THE CHANGE FROM RAIN TO SNOW WILL BE DELAYED THIS
  MORNING IN CENTRAL AND NORTH CENTRAL OKLAHOMA...INCLUDING
  OKLAHOMA CITY...GUTHRIE...STILLWATER...AND PONCA CITY. A MIX OF
  FREEZING RAIN AND SLEET...POSSIBLY HEAVY AT TIMES...WILL CREATE
  VERY SLICK AND HAZARDOUS CONDITIONS BY MIDDAY. HEAVY SNOW IS
  THEN EXPECTED DURING THE AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO
REDUCE VISIBILITY TO NEAR ZERO AT TIMES...WHICH CAN BE
DISORIENTING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.
THIS IS A LIFE THREATENING STORM.

&&

$$

OKZ016-017-021>023-033>038-044-TXZ083>090-241900-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
417 AM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING. 

* TIMING: EARLY THURSDAY MORNING THROUGH EARLY THURSDAY EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
  CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT
  SOUTHERN OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN
  LAWTON AND PAULS VALLEY.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
  LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS WILL
  FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW...
SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO
REDUCE VISIBILITY TO NEAR ZERO AT TIMES...WHICH CAN BE
DISORIENTING. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE.
THIS IS A LIFE THREATENING STORM.

&&

$$

OKZ004>006-009>011-014-015-241900-
/O.CON.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
417 AM CST THU DEC 24 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING. 

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING 
  SNOW AND ACCUMULATION OF UP TO 4 INCHES. 

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
  LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS WILL
  FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

$$

BURKE

Dec 24 - 453 AM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
453 AM CST THU DEC 24 2009

.DISCUSSION...

...MAJOR WINTER STORM TODAY AND THIS EVENING...

THE CHRISTMAS EVE STORM NOW UNFOLDING HAS BEHAVED LIKE A GIFT 
WRAPPED IN MULTIPLE BOXES...IT IS FULL OF SURPRISES. ALL ALONG...THE 
MODELS HAVE SHOWN AN UNUSUAL AMOUNT OF SPREAD REGARDING THE TRACK 
AND INTENSITY OF THE CYCLONE.

...TRENDS...
SOME IMPORTANT TRENDS THAT SHOWED UP OVERNIGHT INCLUDE...THE MID AND 
UPPER CYCLONE SHOWING MORE CLOSED HEIGHT CONTOURS AND TRACKING A 
LITTLE FARTHER SOUTH. THIS MEANS MORE INTENSE LIFTING FOR A LONGER 
DURATION FOR A FAIRLY BROAD AREA ALONG AND NORTH OF THE TRACK. THE 
NAM...ECMWF...AND NOW RUC GENERALLY AGREE ON THE TRACK AND INTENSITY 
OF THE SURFACE LOW...MAINTAINING ABOUT 989 MB ALONG A PATH THROUGH 
EXTREME SOUTHEAST OKLAHOMA...AND CURVING TOWARD NORTHWEST ARKANSAS. 
SURFACE AND SATELLITE OBSERVATIONS SEEM TO BE BEARING THIS OUT AS A 
GOOD LIKELIHOOD. WE WERE ABLE THEN...TO USE THE 00Z AND 06Z NAM 
FIELDS WITH SOME CONFIDENCE. INCREDIBLY...THIS MEANS THAT THE 
CYCLONE IS VERIFYING SOMEWHERE TOWARD THE EXTREME SIDE OF WHAT WAS 
THOUGHT TO BE POSSIBLE JUST ONE TO TWO DAYS AGO. THE DEVELOPING 
TRACK AND INTENSITY SUGGESTS A MAJOR WINTER STORM HAS JUST BEGUN IN 
OUR TEXAS COUNTIES AND WESTERN OKLAHOMA...AND WILL HAVE SEVERE 
IMPACTS ACROSS THE REMAINDER OF NORTHERN...CENTRAL...AND SOUTHERN 
OKLAHOMA THROUGH THIS EVENING.

...ICE POTENTIAL... 
WHILE SNOW AND BLOWING SNOW ARE THE PRIMARY IMPACT...WE HAVE ALSO 
INTRODUCED A PERIOD OF MIXED PRECIPITATION...INCLUDING FREEZING RAIN 
AND SLEET...FOR CENTRAL AND NORTH CENTRAL OKLAHOMA...MAINLY THROUGH 
NOON TODAY. OUR SPECIAL 06 UTC SOUNDING SHOWED A SUBSTANTIAL WARM 
NOSE AT 800-700 MB. WITH THE MID LEVEL LOW CLOSING OFF NEAR THE RED 
RIVER...EASTERLY WINDS WILL HOLD THE WARM AIR IN PLACE FROM THE OKC 
METRO AREA NORTHWARD. AS COLD AIR SURGES IN AT THE SURFACE...THIS 
CREATES A SETUP FOR ICE FROM MID MORNING TO MIDDAY. THE EFFECT IS 
MORE PRONOUNCED IN THE RUC...AND THE NCEP PRECIP TYPE ALGORITHM 
AVAILABLE PER THE SPC WEB SITE PAINTS A STRIPE OF ICE FROM OKC NORTH 
ALONG INTERSTATE 35.

...HEAVY SNOW...
BY MIDDAY TO EARLY AFTERNOON...STRONG DYNAMIC LIFTING AND SOME COLD 
ADVECTION SHOULD CHANGE ALL OF OUR FORECAST AREA OVER TO SNOW. 
DESPITE THE LOSS OF A FEW SNOW HOURS DUE TO THE MORNING ICING...WE 
STILL FEEL THERE WILL BE SIGNIFICANT SNOW ACCUMULATIONS FROM 
OKLAHOMA CITY NORTH. THE SNOWFALL WILL BE GREATEST FARTHER 
SOUTH...WHERE STRONG LIFTING WILL BEGIN MUCH EARLIER IN THE MORNING. 
IN THE 06Z NAM...WE SEE STRONG VERTICAL MOTION THROUGH THE DENDRITIC 
CRYSTAL GROWTH ZONE OVER NEARLY THE ENTIRE FORECAST AREA THIS 
AFTERNOON. IT IS VERY DIFFICULT TO FORECAST HOW MUCH SNOW WILL 
ACCUMULATE ON A GIVEN SURFACE...SINCE GROUND TEMPERATURES ARE ON THE 
MILD SIDE...AND THE EVENT IS OCCURRING AT DAYTIME. IT IS 
LIKELY...HOWEVER...THAT THERE WILL BE PERIODS OF HEAVY SNOW...WITH 
ACCUMULATION OR 1 TO EVEN 2 INCHES PER HOUR...SOMEWHERE FROM CENTRAL 
INTO SOUTH CENTRAL OKLAHOMA. THE 06Z NAM SNOW ACCUMULATION ALGORITHM 
IS NOT TOO FAR OFF FROM OUR THINKING...AND WE RAISED SNOW TOTALS IN 
THOSE AREAS.

...NEAR BLIZZARD...
AN ARCTIC FRONT WILL MOVE FROM WESTERN KANSAS THIS MORNING TO THE 
INTERSTATE 44 CORRIDOR AT EARLY AFTERNOON. COLDER...DRIER AIR IN A 
SHALLOW LAYER NEAR THE GROUND...ALONG WITH VERY GUSTY WINDS...WILL 
INCREASE THE AMOUNT OF BLOWING SNOW AND LOWER WIND CHILL 
TEMPERATURES TO AROUND 10 DEGREES ABOVE ZERO. IT IS EVEN POSSIBLE 
THAT A BLIZZARD WARNING WOULD BE JUSTIFIED FOR A FEW HOURS THIS 
AFTERNOON...SHOULD THE SNOW ACCUMULATION AND BLOWING SNOW OCCUR AS 
FORECAST. THIS IS A LIFE THREATENING STORM.

...AFTER THE STORM...
WE USED THE COLDER NAM AND ECMWF TEMPERATURES IN THE DAYS TO 
COME...GIVEN WIDESPREAD SNOW COVER. THE GFS DID NOT SEEM TO ACCOUNT 
FOR THIS. WINDS ARE EXPECTED TO DECREASE RATHER QUICKLY IN THE 
SECOND HALF OF THURSDAY NIGHT...SO THIS KEEPS WIND CHILLS JUST ABOVE 
THE ADVISORY CRITERIA...AT LEAST IN THE CURRENT FORECAST. THIS 
SHOULD BE REEVALUATED THIS EVENING. AFTER SEVERAL DAYS OF 
COLD...THERE IS ANOTHER STORM SYSTEM SET TO BRING A CHANCE OF RAIN 
OR SNOW BY NEXT TUESDAY AND WEDNESDAY.

...THANKS...
TO SURROUNDING NWS FORECAST OFFICES AND THE HPC AND SPC FOR THEIR 
COLLABORATION THIS MORNING.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  31  14  29  14 / 100  40   0   0 
HOBART OK         30  11  31  12 / 100  20  10   0 
WICHITA FALLS TX  34  12  34  14 / 100  20   0   0 
GAGE OK           25  14  28  16 /  70  10   0   0 
PONCA CITY OK     31  17  24  16 / 100  60  10  10 
DURANT OK         45  20  33  19 / 100  50   0  10 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 10 PM CST THIS EVENING FOR OKZ007-008-
     012-013-018>020-024>032-039>043-045>048-050>052.

     WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR 
     OKZ004>006-009>011-014-015.

     WINTER STORM WARNING UNTIL 6 PM CST THIS EVENING FOR OKZ016-017-
     021>023-033>038-044.

TX...WINTER STORM WARNING UNTIL 6 PM CST THIS EVENING FOR TXZ083>090.

&&

$$

02/22

Dec 24 - 545 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
545 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241300- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
545 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER THE SOUTHERN PLAINS 
THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD ACROSS MUCH 
OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA THIS MORNING AS AN UPPER 
LEVEL STORM IN ADVANCE OF AN UPPER LEVEL STORM SYSTEM OVER WEST 
TEXAS. AT 545 AM...SNOW WAS PREVALENT...MAINLY WEST OF A SEYMOUR 
TEXAS TO WEATHERFORD OKLAHOMA LINE. AN AREA OF RAIN...FREEZING 
RAIN...SLEET AND SOME SNOW EXTENDED FROM AROUND WICHITA FALLS 
NORTHWARD THROUGH LAWTON TO WESTERN PARTS OF THE OKLAHOMA CITY METRO 
AREA. MEANWHILE...COLD RAIN CONTINUED OVER THE REMAINDER OF CENTRAL 
AND SOUTHEAST OKLAHOMA...MAINLY SOUTH OF INTERSTATE 44. NORTHERLY 
WINDS HAVE ALSO INCREASED THIS MORNING. SUSTAINED WINDS OF 20 TO 35 
MPH WERE COMMON...WITH NUMEROUS GUSTS OVER 40 MPH. 

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS 
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS 
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD 
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. A PERIOD OF 
MIXED PRECIPITATION...INCLUDING RAIN...FREEZING RAIN...SLEET AND 
SNOW MAY PERSIST FOR MUCH OF THE MORNING OVER PARTS OF CENTRAL 
OKLAHOMA...INCLUDING THE OKLAHOMA CITY METRO AREA...BEFORE CHANGING 
TO ALL SNOW BY AFTERNOON. STRONG NORTH WIND WILL ALSO CONTINUE 
THROUGH THE DAY WITH GUSTS OVER 40 MPH COMMON. THE STRONG WINDS WILL 
RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW AND REDUCED 
VISIBILITIES.
 
ROADS ARE ALREADY BECOMING SLICK AND HAZARDOUS IN WESTERN OKLAHOMA 
AND NORTH TEXAS AND CONDITIONS WILL LIKELY DETERIORATE FURTHER EAST 
DURING THE MORNING.        

$$

II

Dec 24 - 611 AM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
611 AM CST THU DEC 24 2009

.AVIATION...THE TAFS ARE NECESSARILY PESSIMISTIC ON CEILINGS AND
VISIBILITY...AS A MAJOR WINTER STORM TAKES SHAPE DURING THE DAY.
THE CHANGE TO SNOW HAD REACHED KCSM...AND A RAIN TO SNOW MIX WAS
REPORTED AROUND KHBR AND KLAW. MIXED PRECIPITATION WILL PERSIST
LONGEST IN CENTRAL AND NORTH CENTRAL OKLAHOMA BEFORE CHANGING TO
SNOW. WITH INTENSE MID AND UPPER LEVEL LIFT ARRIVING TODAY...SNOW
SHOULD BECOME HEAVY AT TIMES. EQUALLY AS IMPORTANT ARE THE
WINDS...WHICH WERE ALREADY GUSTING OVER 40 KNOTS. THIS WAS
INDICATIVE OF A DEEPENING...INTENSE CYCLONE...AND THE WINDS WILL
ONLY INCREASE FURTHER WITH THE ARRIVAL OF AN ARCTIC FRONT DURING
THE DAY. WHERE SNOW ACCUMULATE...BLOWING SNOW WILL FURTHER REDUCE
VISIBILITY. IMPROVEMENT WILL BE SLOW DURING THE EVENING...BUT BY
LATE IN THE PERIOD...THE STORM WILL EXIT TO THE EAST...AND WIND
SPEEDS WILL DECREASE SIGNIFICANTLY AFTER MIDNIGHT.

Dec 24 - 645 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
645 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241500- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
645 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER THE SOUTHERN PLAINS 
THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD ACROSS MUCH 
OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA THIS MORNING IN ADVANCE 
OF AN UPPER LEVEL STORM SYSTEM OVER WEST TEXAS. AT 645 AM...SNOW WAS 
PREVALENT...MAINLY WEST OF A WICHITA FALLS TO LAWTON...TO HINTON 
LINE. AN AREA OF RAIN...FREEZING RAIN...SLEET AND SOME SNOW EXTENDED 
FROM AROUND WICHITA FALLS NORTHWEASTWARD THROUGH WESTERN PARTS OF 
THE OKLAHOMA CITY METRO AREA. MEANWHILE...COLD RAIN CONTINUED OVER 
THE REMAINDER OF CENTRAL AND SOUTHEAST OKLAHOMA...MAINLY SOUTH OF 
INTERSTATE 44. NORTHERLY WINDS HAVE ALSO INCREASED THIS MORNING. 
SUSTAINED WINDS OF 20 TO 35 MPH WERE COMMON...WITH NUMEROUS GUSTS 
OVER 40 MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF 
SNOW AND REDUCED VISIBILITY IN WESTERN OKLAHOMA AND NORTH TEXAS.  

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS 
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS 
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD 
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. A PERIOD OF 
MIXED PRECIPITATION...INCLUDING RAIN...FREEZING RAIN...SLEET AND 
SNOW MAY PERSIST FOR MUCH OF THE MORNING OVER PARTS OF CENTRAL 
OKLAHOMA...INCLUDING THE OKLAHOMA CITY METRO AREA...BEFORE CHANGING 
TO ALL SNOW BY AFTERNOON. STRONG NORTH WIND WILL ALSO CONTINUE 
THROUGH THE DAY WITH GUSTS OVER 40 MPH COMMON. THE STRONG WINDS WILL 
RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW AND REDUCED 
VISIBILITIES. ROADS ARE ALREADY BECOMING SLICK AND HAZARDOUS IN 
WESTERN OKLAHOMA AND NORTH TEXAS AND CONDITIONS WILL LIKELY 
DETERIORATE FURTHER EAST DURING THE MORNING.        

$$

II

Dec 24 - 755 AM - Hazardous Weather Outlook

Jump To Top

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
755 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-241800-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
755 AM CST THU DEC 24 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL AFFECT PARTS OF OKLAHOMA TODAY...BUT SEVERE 
THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
COLD AND STABLE LOW LEVEL AIR WILL DEEPEN THROUGHOUT THE DAY. 
INTENSE LOW PRESSURE ALOFT WILL GENERATE ENOUGH LIFTING TO GENERATE 
SCATTERED THUNDERSTORMS IN PARTS OF SOUTHERN AND CENTRAL OKLAHOMA. 
THESE STORMS WILL PRODUCE A VARIETY OF PRECIPITATION...RANGING FROM 
RAIN TO FREEZING RAIN...SMALL HAIL...SLEET...AND EVEN SNOW. BURSTS 
OF HEAVY SLEET AND SNOW WILL ACCOMPANY THE THUNDERSTORMS THIS 
AFTERNOON. BY EVENING...INTENSE LIFT WILL MOVE EAST WITH THE UPPER 
LEVEL LOW...ENDING THE CHANCE OF THUNDER.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY DEC 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
A DANGEROUS WINTER STORM IS UNFOLDING OVER ALL OF OKLAHOMA AND 
WESTERN NORTH TEXAS. PLEASE REFER TO THE LATEST VERSION OF THIS 
PRODUCT FOR MORE INFORMATION.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
COLD ARCTIC AIR WILL SLIDE INTO THE SOUTHERN PLAINS THURSDAY 
NIGHT...AND REMAIN IN PLACE THROUGH THE WEEKEND. WITH FRESH SNOW ON 
THE GROUND...TEMPERATURES MAY FALL VERY LOW AT NIGHT...INTO THE 
SINGLE DIGITS ABOVE ZERO...AND RISE ONLY TO NEAR FREEZING IN THE 
DAY. SOME LOCATIONS WILL SEE AN EXTENDED PERIOD OF TIME WITH SUB 
FREEZING WEATHER. WIND CHILL TEMPERATURES WILL APPROACH ZERO DEGREES 
AT TIMES. IN ADDITION...ANOTHER UPPER LEVEL TROUGH WILL APPROACH THE 
REGION NEXT WEEK...BRINGING A CHANCE OF RAIN AND SNOW ON TUESDAY AND 
WEDNESDAY.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT NOON 
TODAY.

$$

BURKE

Dec 24 - 845 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
845 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241600- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
845 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER THE SOUTHERN PLAINS 
THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD ACROSS MUCH 
OF WESTERN NORTH TEXAS AND WESTERN OKLAHOMA THIS MORNING IN ADVANCE 
OF AN UPPER LEVEL STORM SYSTEM OVER WEST TEXAS. AT 845 AM...SNOW WAS 
PREVALENT...MAINLY WEST OF A WICHITA FALLS TO LAWTON...TO ANADARKO 
AND HINTON LINE. AN AREA OF RAIN...FREEZING RAIN...SLEET AND SOME 
SNOW ALONG AND WEST OF INTERSTATE 35... INCLUDING THE OKLAHOMA CITY 
METRO AREA. MEANWHILE...COLD RAIN CONTINUED OVER THE REMAINDER OF 
CENTRAL AND SOUTHEAST OKLAHOMA... MAINLY EAST OF INTERSTATE 35. 
NORTHERLY WINDS CONTINUED WITH SUSTAINED WINDS OF 25 TO 35 MPH WERE 
COMMON...WITH NUMEROUS GUSTS OVER 40 MPH. THIS IS CAUSING 
CONSIDERABLE BLOWING AND DRIFTING OF SNOW AND REDUCED VISIBILITY IN 
WESTERN OKLAHOMA AND NORTH TEXAS.  

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS 
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS 
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD 
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. A PERIOD OF 
MIXED PRECIPITATION...INCLUDING RAIN...FREEZING RAIN...SLEET AND 
SNOW MAY PERSIST FOR MUCH OF THE MORNING OVER PARTS OF CENTRAL 
OKLAHOMA...INCLUDING THE OKLAHOMA CITY METRO AREA...BEFORE CHANGING 
TO ALL SNOW BY AFTERNOON. STRONG NORTH WIND WILL ALSO CONTINUE 
THROUGH THE DAY WITH GUSTS OVER 40 MPH COMMON. THE STRONG WINDS WILL 
RESULT IN CONSIDERABLE BLOWING AND DRIFTING SNOW AND REDUCED 
VISIBILITIES. ROADS ARE ALREADY BECOMING SLICK AND HAZARDOUS IN 
WESTERN OKLAHOMA AND NORTH TEXAS AND CONDITIONS WILL LIKELY 
DETERIORATE FURTHER EAST DURING THE MORNING.        

$$

II/TY

Dec 24 - 941 AM - Winter Weather Message

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URGENT - WINTER WEATHER MESSAGE...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
941 AM CST THU DEC 24 2009

OKZ018>020-024>031-039>042-045-046-050-250000-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
/O.COR.KOUN.BZ.W.0002.091224T1541Z-091225T0400Z/
KINGFISHER-LOGAN-PAYNE-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-
CLEVELAND-POTTAWATOMIE-SEMINOLE-STEPHENS-GARVIN-MURRAY-PONTOTOC-
JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...STILLWATER...
YUKON...EL RENO...MUSTANG...OKLAHOMA CITY...CHANDLER...
CHICKASHA...PURCELL...NORMAN...MOORE...SHAWNEE...SEMINOLE...
DUNCAN...PAULS VALLEY...SULPHUR...ADA...WAURIKA...ARDMORE...
MARIETTA
941 AM CST THU DEC 24 2009

...BLIZZARD WARNING IN EFFECT UNTIL 10 PM CST THIS EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 10 PM CST THIS EVENING. THIS
REPLACES THE WINTER STORM WARNING WHICH IS NO LONGER IN EFFECT.

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 45 TO 55 MPH. BLIZZARD CONDITIONS
  AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT SOUTHERN
  OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN LAWTON
  AND PAULS VALLEY.

* OTHER IMPACTS: A PERIOD OF FREEZING RAIN AND SLEET WILL BE
  POSSIBLE ACROSS CENTRAL AND SOUTH CENTRAL OKLAHOMA AS THE
  PRECIPITATION TRANSITIONS FROM RAIN TO SNOW. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ016-017-021>023-033>038-044-TXZ083>090-250000-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0000Z/
/O.NEW.KOUN.BZ.W.0002.091224T1541Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
941 AM CST THU DEC 24 2009

...BLIZZARD WARNING IN EFFECT UNTIL 6 PM CST THIS EVENING...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A BLIZZARD
WARNING...WHICH IS IN EFFECT UNTIL 6 PM CST THIS EVENING. THIS
REPLACES THE WINTER STORM WARNING WHICH IS NO LONGER IN EFFECT.

* TIMING: THURSDAY MORNING AND AFTERNOON.

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 45 TO 60 MPH. BLIZZARD
  CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 4 TO 8 INCHES...BUT
  SOUTHERN OKLAHOMA MAY RECEIVE 8 TO 11 INCHES...GENERALLY BETWEEN
  LAWTON AND PAULS VALLEY.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY 
  LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS 
  WILL FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ007-008-012-013-032-043-047-048-051-052-250000-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-KAY-GARFIELD-NOBLE-HUGHES-COAL-JOHNSTON-ATOKA-MARSHALL-
BRYAN-
INCLUDING THE CITIES OF...MEDFORD...PONCA CITY...ENID...PERRY...
HOLDENVILLE...COALGATE...TISHOMINGO...ATOKA...MADILL...DURANT
941 AM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
  CONDITIONS AT TIMES. SNOWFALL WILL AVERAGE 3 TO 6 INCHES IN
  NORTH CENTRAL OKLAHOMA AND 4 TO 8 INCHES IN SOUTHEAST OKLAHOMA.

* OTHER IMPACTS: A PERIOD OF FREEZING RAIN AND SLEET WILL BE
  POSSIBLE AS PRECIPITATION TRANSITIONS FROM RAIN TO SNOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY TO
NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ004>006-009>011-014-015-250000-
/O.CON.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
941 AM CST THU DEC 24 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING. 

* TIMING: TONIGHT THROUGH THURSDAY

* MAIN IMPACT: NEAR BLIZZARD CONDITIONS WITH SNOW AND BLOWING 
  SNOW AND ACCUMULATION OF UP TO 4 INCHES. 

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY 
  LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS 
  WILL FALL TO AROUND 5 TO 10 DEGREES ABOVE ZERO. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

$$

Dec 24 - 950 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
950 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241700- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
950 AM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORMS CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN 
NORTH TEXAS THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD 
ACROSS MUCH OF WESTERN NORTH TEXAS AND WESTERN AND PARTS OF CENTRAL 
OKLAHOMA THIS MORNING IN ADVANCE OF AN UPPER LEVEL STORM SYSTEM OVER 
NORTH TEXAS. 

A VARIETY OF PRECIPITATION TYPES WERE AFFECTING THE REGION. AT 
945 AM...SNOW WAS PREVALENT...MAINLY WEST OF A WICHITA FALLS TO 
LAWTON...TO ANADARKO AND HINTON LINE. AN AREA OF SLEET...SNOW AND 
FREEZING RAIN WAS OCCURRING ALONG AND WEST OF INTERSTATE 35... 
INCLUDING THE OKLAHOMA CITY METRO AREA. NORTHERLY WINDS CONTINUED 
WITH SUSTAINED WINDS OF 25 TO 35 MPH WERE COMMON...WITH NUMEROUS 
GUSTS OVER 50 MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING 
OF SNOW AND REDUCED VISIBILITY.  

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS 
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS 
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD 
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. STRONG NORTH 
WIND WILL ALSO CONTINUE THROUGH THE DAY WITH GUSTS OVER 50 MPH 
COMMON. THE STRONG WINDS WILL RESULT IN CONSIDERABLE BLOWING AND 
DRIFTING SNOW AND REDUCED VISIBILITIES. ROADS ARE ALREADY BECOMING 
SLICK AND HAZARDOUS OVER MANY LOCATIONS AND CONDITIONS WILL LIKELY 
DETERIORATE FURTHER EAST DURING THE MORNING.        

$$

TY

Dec 24 - 954 AM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
954 AM CST THU DEC 24 2009

.UPDATE...
HAVE UPGRADED TO BLIZZARD WARNING FOR MUCH OF SOUTHWEST AND
CENTRAL SECTIONS OF THE CWA. NUMEROUS VISIBILITIES LESS THAN 1/4
MILE ARE BEING REPORTED IN AREAS THAT HAVE TRANSITIONED FROM THE
WINTER MIX TO SNOW... INCLUDING IN THE WICHITA FALLS AREA.
NUMEROUS ACCIDENTS HAVE BEEN REPORTED. ALTHOUGH WE WILL HAVE A
MIX ACROSS CENTRAL AND SOUTH CENTRAL OKLAHOMA INITIALLY...
ESPECIALLY WITH THE WARM NOSE POKING INTO THE AREA ON THE NORTH
SIDE OF THE UPPER LOW... BUT THE TRANSITION TO SNOW WILL BE
COMING. WINDS WILL REMAIN VERY HIGH TODAY AS SURFACE LOW DEEPENS
IN THE OKLA/TEX/ARK BORDER REGION... AND HAVE INCREASED FORECAST
WIND SPEEDS AND GUSTS. WILL BE INVESTIGATING FORECAST SNOW
AMOUNTS NOW... BUT WITH THE ENHANCED REFLECTIVITY AND THE PIVOT
POINT APPEARING TO BE SETTING UP IN THE LAWTON/DUNCAN AREAS... THE
GEOGRAPHY OF THE FORECAST HEAVIEST SNOW STILL LOOKS REASONABLE AT
THIS TIME.   ..SPEG.

Dec 24 - 1002 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST...CORRECTED
NATIONAL WEATHER SERVICE NORMAN OK
1002 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241700- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1002 CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN 
NORTH TEXAS THIS MORNING. SNOW...SLEET AND FREEZING RAIN HAVE SPREAD 
ACROSS MUCH OF WESTERN NORTH TEXAS AND WESTERN AND PARTS OF CENTRAL 
OKLAHOMA THIS MORNING IN ADVANCE OF AN UPPER LEVEL STORM SYSTEM OVER 
NORTH TEXAS. 

A VARIETY OF PRECIPITATION TYPES WERE AFFECTING THE REGION. AT 
945 AM...SNOW WAS PREVALENT...MAINLY WEST OF A WICHITA FALLS TO 
LAWTON...TO ANADARKO AND HINTON LINE. AN AREA OF SLEET...SNOW AND 
FREEZING RAIN WAS OCCURRING ALONG AND WEST OF INTERSTATE 35... 
INCLUDING THE OKLAHOMA CITY METRO AREA. NORTHERLY WINDS CONTINUED 
WITH SUSTAINED WINDS OF 25 TO 35 MPH COMMON AND NUMEROUS GUSTS OVER 
50 MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW 
AND REDUCED VISIBILITY.  

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS 
TEXAS...SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN NORTH TEXAS 
AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD NORTHEASTWARD 
INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. STRONG NORTH 
WIND WILL ALSO CONTINUE THROUGH THE DAY WITH GUSTS OVER 50 MPH 
COMMON. THE STRONG WINDS WILL RESULT IN CONSIDERABLE BLOWING AND 
DRIFTING SNOW AND REDUCED VISIBILITIES. ROADS ARE ALREADY BECOMING 
SLICK AND HAZARDOUS OVER MANY LOCATIONS AND CONDITIONS WILL LIKELY 
DETERIORATE FURTHER EAST DURING THE MORNING.        

$$

TY

Dec 24 - 1045 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1045 AM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241800- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1045 CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN 
NORTH TEXAS THIS MORNING. A VARIETY OF WINTER WEATHER WILL AFFECT 
MUCH OF WESTERN NORTH TEXAS AND WESTERN AND PARTS OF CENTRAL 
OKLAHOMA THROUGH THIS AFTERNOON IN ADVANCE OF AN UPPER LEVEL STORM 
SYSTEM OVER NORTH TEXAS. 

AT 1045 AM...SNOW WAS PREVALENT...MAINLY WEST OF A WICHITA FALLS 
TEXAS...TO LAWTON...TO ANADARKO...WESTERN OKLAHOMA CITY... AND ENID 
OKLAHOMA. AN AREA OF SLEET...SNOW AND FREEZING RAIN WAS OCCURRING 
NEAR AND JUST EAST OF INTERSTATE 35... INCLUDING PARTS OF THE 
OKLAHOMA CITY METRO AND LAWTON AREAS. NORTHERLY WINDS CONTINUED WITH 
SUSTAINED WINDS OF 25 TO 35 MPH COMMON AND NUMEROUS GUSTS OVER 50 
MPH. THIS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW AND 
REDUCED VISIBILITY.  

AS THE UPPER LEVEL SYSTEM CONTINUES TO MOVE SLOWLY EASTWARD ACROSS 
NORTHERN TEXAS. SNOW...HEAVY AT TIMES WILL CONTINUE OVER WESTERN 
NORTH TEXAS AND PARTS OF WESTERN OKLAHOMA AND GRADUALLY SPREAD 
NORTHEASTWARD INTO CENTRAL AND SOUTHEAST OKLAHOMA DURING THE DAY. 
STRONG NORTH WIND WILL ALSO CONTINUE THROUGH THE DAY WITH GUSTS OVER 
50 MPH COMMON. THE STRONG WINDS WILL RESULT IN CONSIDERABLE BLOWING 
AND DRIFTING SNOW AND REDUCED VISIBILITIES. ROADS ARE ALREADY 
BECOMING SLICK AND HAZARDOUS OVER MANY LOCATIONS AND CONDITIONS WILL 
LIKELY DETERIORATE FURTHER EAST DURING THE MORNING. CONDITIONS ON 
AREA ROADWAYS WILL NOT IMPROVE SIGNIFICANTLY THROUGH THE AFTERNOON 
HOURS. CAUTION IS ADVISED THIS AFTERNOON AND THIS EVENING IF TRAVEL 
IS NECESSARY. 

$$

TY

Dec 24 - 1050 AM - Hazardous Weather Outlook

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HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1050 AM CST THU DEC 24 2009

OKZ004>048-050>052-TXZ083>090-251200-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1050 AM CST THU DEC 24 2009

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...TODAY AND TONIGHT...

THUNDERSTORM OUTLOOK...
ISOLATED THUNDERSTORMS WILL AFFECT PARTS OF OKLAHOMA TODAY...BUT 
SEVERE THUNDERSTORMS ARE NOT EXPECTED.

DISCUSSION...
COLD AND STABLE LOW LEVEL AIR WILL DEEPEN THROUGHOUT THE DAY. 
INTENSE LOW PRESSURE ALOFT WILL GENERATE ENOUGH LIFTING TO GENERATE 
ISOLATED THUNDERSTORMS IN PARTS OF SOUTHERN AND CENTRAL OKLAHOMA. 
THESE STORMS WILL PRODUCE A VARIETY OF PRECIPITATION...RANGING FROM 
RAIN TO FREEZING RAIN...SMALL HAIL...SLEET...AND EVEN SNOW. BURSTS 
OF HEAVY SLEET AND SNOW WILL ACCOMPANY THE THUNDERSTORMS THIS 
AFTERNOON. BY EVENING...INTENSE LIFT WILL MOVE EAST WITH THE UPPER 
LEVEL LOW...ENDING THE CHANCE OF THUNDERSTORMS.

PROBABILITY TABLE...
VALID THROUGH 700 AM CST FRIDAY DEC 25.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...90 PERCENT 
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...5 PERCENT.

OTHER HAZARDOUS WEATHER...
A DANGEROUS WINTER STORM IS UNFOLDING OVER ALL OF OKLAHOMA AND 
WESTERN NORTH TEXAS. PLEASE REFER TO THE LATEST VERSION OF THE 
WINTER STORM WARNING PRODUCTS FOR MORE INFORMATION.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS ARE NOT EXPECTED.

OTHER HAZARDOUS WEATHER...
COLD ARCTIC AIR WILL SLIDE INTO THE SOUTHERN PLAINS THURSDAY 
NIGHT...AND REMAIN IN PLACE THROUGH THE WEEKEND. WITH FRESH SNOW ON 
THE GROUND...TEMPERATURES MAY FALL VERY LOW AT NIGHT...INTO THE 
SINGLE DIGITS ABOVE ZERO...AND RISE ONLY TO NEAR FREEZING IN THE 
DAY. SOME LOCATIONS WILL SEE AN EXTENDED PERIOD OF TIME WITH SUB 
FREEZING WEATHER. WIND CHILL TEMPERATURES WILL APPROACH ZERO DEGREES 
AT TIMES. IN ADDITION...ANOTHER UPPER LEVEL TROUGH WILL APPROACH THE 
REGION NEXT WEEK...BRINGING A CHANCE OF RAIN AND SNOW ON TUESDAY AND 
WEDNESDAY.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 5 AM 
FRIDAY.

$$

Dec 24 - 1150 PM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1150 AM CST THU DEC 24 2009

.AVIATION...
RADAR SHOWS A DEVELOPING BAND OF MOST-INTENSE SNOWFALL FROM NEAR
KSWO TO KPWA TO KLAW AND KSPS. THIS BAND WILL LIKELY TRANSLATE
SLOWLY EAST THIS AFTERNOON... AND SHOULD AFFECT KOKC THROUGHOUT
THE AFTERNOON. MODELS SHOW LIFT DIMINISHING ABRUPTLY BY 25/0000Z
AT ALL BUT KPNC. WINDS WILL BEGIN TO SUBSIDE AFTER SUNSET...
ALLOWING VSBYS IN BLSN TO IMPROVE SOMEWHAT. CONTINUING IMPROVEMENT
WILL OCCUR OVERNIGHT... AND ALL SITES SHOULD BE BACK TO WIDE OPEN
VFR BY SUNRISE TOMORROW.

Dec 24 - 1200 PM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1200 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-241900- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1200 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN 
NORTH TEXAS THIS AFTERNOON. HEAVY SNOW WILL MOVE EAST INTO PARTS OF 
CENTRAL AND SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON.  

AT 1200 PM... MODERATE TO HEAVY SNOW CONTINUED OVER MUCH OF WESTERN 
AND PARTS OF CENTRAL OKLAHOMA... AS WELL AS ALL OF WESTERN NORTH 
TEXAS. ONE PARTICULARLY HEAVY SNOW BAND WAS LOCATED FROM GUTHRIE... 
THROUGH WESTERN OKLAHOMA CITY... TO CHICKASHA... LAWTON... AND 
WICHITA FALLS TEXAS. SNOWFALL RATES OF AT LEAST ONE INCH AN HOUR 
WILL OCCUR THROUGH MID AFTERNOON. BLIZZARD CONDITIONS WILL EXIST AS 
WELL... WITH NORTH WINDS GUSTING OVER 50 MPH REDUCING VISIBILITIES 
TO JUST A FEW HUNDRED FEET AT TIMES. 

THE BACK EDGE OF THE SNOWFALL WAS JUST BEGINNING TO MOVE ACROSS THE 
OKLAHOMA AND TEXAS PANHANDLE BORDER. HOWEVER... STRONG NORTH WINDS 
WILL CONTINUE THROUGH THIS EVENING... KEEPING VISIBILITIES WELL 
BELOW ONE MILE. CONDITIONS ON AREA ROADWAYS WILL CONTINUE TO BE 
HAZARDOUS. CAUTION IS ADVISED THIS AFTERNOON AND THIS EVENING IF 
TRAVEL IS NECESSARY.  

$$

TY

Dec 24 - 1211 PM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1211 PM CST THU DEC 24 2009

.UPDATE...
DRY SLOT IS WRAPPING AROUND THE NORTHEASTERN SIDE OF THE UPPER
LEVEL CIRCULATION AND IS MOVING NORTHWEST FROM SOUTHEAST OKLAHOMA
TOWARD CENTRAL OKLAHOMA. THIS WILL INITIALLY LIMIT THE EASTWARD
EXTENTION OF THE HEAVIER SNOW TOTALS SO HAVE REDUCED PRECIP
ACCUMULATIONS IN THE SOUTH CENTRAL AND SOUTHEAST PORTION OF THE
FORECAST AREA. THE HEAVIEST SNOW TOTALS ARE STILL EXPECTED TO BE
IN THE DUNCAN-LAWTON-WICHITA FALLS CORRIDOR WHERE THE PIVOT POINT
OF THE CIRCULATION IS MAINTAINING ENHANCED REFLECTIVITIES. WILL
ALSO HAVE A ENHANCED BAND FROM THE MAX IN SOUTHWEST OKLAHOMA
NORTH-NORTHEAST ACROSS EL RENO AND THE WEST SIDES OF OKLAHOMA
CITY WHERE PERSISTENT ENHANCED REFLECTIVITIES ALSO CONTINUE AND
MEDIA COVERAGE SHOWS BLIZZARD CONDITIONS. THERE WILL BE A
GRADIENT OF SNOWFALL AMOUNTS ACROSS CENTRAL OKLAHOMA THANKS TO THE
DELAYED CHANGEOVER TO SNOW IN THE SOUTHEAST SIDE OF THE OKC METRO
AND THE APPROACHING DRYSLOT. I HAVE ATTEMPTED TO ACCOUNT FOR THIS
IN THE NEW SNOW GRIDS BUT IT WILL BE HARD TO PINPOINT THE EXACT
LOCATION OF THIS GRADIENT. WILL NOT ADJUST THE HEADLINES AT THE
MOMENT... BLIZZARD WARNING STILL LOOKS GOOD FOR MUCH OF THE
COVERED AREAS... ALTHOUGH THE ONSET OF SNOW IN SOUTH CENTRAL
OKLAHOMA MAY NOT OCCUR UNTIL LATER THIS AFTERNOON. ..SPEG.

Dec 24 - 115 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
115 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-242100- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
115 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...

A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN 
NORTH TEXAS THIS AFTERNOON. HEAVY SNOW WILL MOVE EAST INTO PARTS OF 
CENTRAL AND SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON.  

AT 1 PM... MODERATE TO HEAVY SNOW CONTINUED OVER MUCH OF WESTERN AND 
PARTS OF CENTRAL OKLAHOMA AND WESTERN NORTH TEXAS. ONE PARTICULARLY 
HEAVY SNOW BAND WAS LOCATED FROM NEAR BLANCHARD TO DUNCAN OKLAHOMA 
TO NEAR WICHITA FALLS TEXAS. OTHER MODERATE TO HEAVY SNOW WAS 
LOCATED FROM EAST OF STILLWATER TO EAST OF OKLAHOMA CITY. SOME MIX 
WITH SLEET OR FREEZING RAIN MAY ALSO BE OCCURRING. SNOWFALL RATES OF 
AT LEAST ONE INCH AN HOUR WILL OCCUR THROUGH MID AFTERNOON WITH 
THESE HEAVIER BANDS OF SNOW. BLIZZARD CONDITIONS WILL EXIST AS 
WELL... WITH NORTH WINDS GUSTING OVER 50 MPH REDUCING VISIBILITIES 
TO JUST A FEW HUNDRED FEET AT TIMES. 

THE BACK EDGE OF THE SNOWFALL WAS JUST BEGINNING TO MOVE INTO 
WESTERN OKLAHOMA AND WESTERN NORTH TEXAS WITH SNOW DIMINISHING WEST 
OF A ALVA TO ELK CITY TO HOLLIS LINE IN OKLAHOMA AND WEST OF A 
QUANAH TO MUNDAY LINE IN TEXAS. HOWEVER... STRONG NORTH WINDS WILL 
CONTINUE THROUGH THIS EVENING... KEEPING VISIBILITIES WELL BELOW ONE 
MILE. CONDITIONS ON AREA ROADWAYS WILL CONTINUE TO BE HAZARDOUS. 
CAUTION IS ADVISED THIS AFTERNOON AND THIS EVENING IF TRAVEL IS 
NECESSARY.  

$$

Dec 24 - 312 PM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
312 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-242300- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
312 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM CONTINUES TO UNFOLD OVER OKLAHOMA AND WESTERN 
NORTH TEXAS THIS AFTERNOON. HEAVY SNOW WILL MOVE EAST INTO PARTS OF 
CENTRAL AND SOUTHERN OKLAHOMA THROUGH THIS AFTERNOON.  

AT 3 PM... MODERATE TO HEAVY SNOW CONTINUED OVER PORTIONS OF 
OKLAHOMA AND NORTH TEXAS. THE HEAVIEST SNOW EXTENDED FROM SOUTH 
CENTRAL TO CENTRAL OKLAHOMA... ESPECIALLY FROM DUNCAN AND LONE GROVE 
TO PAULS VALLEY... NORMAN... SHAWNEE... CHANDLER AND STROUD. SOME 
MIX WITH SLEET OR FREEZING RAIN MAY ALSO BE OCCURRING IN SOME 
LOCATIONS. SNOWFALL RATES OF AT LEAST ONE INCH AN HOUR WILL OCCUR 
THROUGH MID AFTERNOON WITH THESE HEAVIER BANDS OF SNOW. BLIZZARD 
CONDITIONS WILL EXIST AS WELL... WITH NORTH WINDS GUSTING OVER 50 
MPH REDUCING VISIBILITIES TO JUST A FEW HUNDRED FEET AT TIMES. 

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS 
FROM CHEROKEE TO FREDERICK OKLAHOMA TO SEYMOUR TEXAS. HOWEVER... 
STRONG NORTH WINDS WILL CONTINUE THROUGH THIS EVENING... KEEPING 
VISIBILITIES WELL BELOW ONE MILE. CONDITIONS ON AREA ROADWAYS WILL 
CONTINUE TO BE HAZARDOUS. CAUTION IS ADVISED THIS AFTERNOON AND THIS 
EVENING IF TRAVEL IS NECESSARY.  

$$

26

Dec 24 - 325 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
325 PM CST THU DEC 24 2009

.DISCUSSION...
THE BLIZZARD-GENERATING STORM SYSTEM WHOSE SURFACE CENTER IS NOW
OVER ARKANSAS WILL CONTINUE TO MOVE NORTHEAST OVERNIGHT...
GRADUALLY RELEASING ITS GRIP ON OKLAHOMA AND NORTH TEXAS. THE
ENHANCED SNOW BAND THAT HAS BROUGHT THE HEAVIEST SNOW ALONG AN
AXIS FROM STILLWATER TO OK CITY TO DUNCAN AND WICHITA FALLS WILL
GRADUALLY WEAKEN AND SHIFT EAST. IT APPEARS THAT IT WILL STILL BE
CAPABLE OF PUTTING DOWN SEVERAL MORE INCHES OF SNOW OVER OUR
EASTERN COUNTIES... ROUGHLY FROM I-35 ON EAST... WITH LESSER
AMOUNTS OVER OUR SOUTHEAST COUNTIES.

GIVEN THE CURRENT PROGRESS OF THE STORM SYSTEM... AND THE
CONTINUING STRONG PRESSURE GRADIENT BEHIND IT... HAVE OPTED TO
EXTEND THE BLIZZARD WARNING/WINTER STORM WARNING A FEW MORE HOURS
ALONG OUR EASTERN PERIPHERY.

WIND CHILLS REACH BORDERLINE LEVELS FOR AN ADVISORY LATE TONIGHT...
BUT GIVEN THE BIGGER-FISH-TO-FRY SITUATION... WILL NOT WORRY TOO
MUCH ABOUT THAT YET.

TEMPERATURES WILL BE HELD DOWN QUITE DRAMATICALLY BY THE NEW SNOW
COVER... AND THE NAM12 NUMBERS LOOK MORE REASONABLE THAN THOSE
FROM THE VARIOUS MOS GUIDANCE SOURCES FOR THE NEXT DAY OR TWO.
HAVE ONLY MADE CHANGES TO THE FIRST COUPLE OF PERIODS...
HOWEVER... DUE TO THE OVERALL WORKLOAD WITH THIS STORM. LATER
SHIFTS CAN FINE-TUNE THE NUMBERS AS NEEDED.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  15  28  14  31 /  70   0   0  10 
HOBART OK         10  29  12  35 /  10  10   0   0 
WICHITA FALLS TX  12  31  14  39 /  10   0   0   0 
GAGE OK           13  28  16  35 /  10   0   0  10 
PONCA CITY OK     15  24  16  28 /  80  10  10  10 
DURANT OK         22  33  19  36 /  80   0  10   0 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...BLIZZARD WARNING UNTIL 10 PM CST THIS EVENING FOR OKZ018-019-024-
     025-027>029-039>042-045-046-050.

     WINTER WEATHER ADVISORY UNTIL 6 PM CST THIS EVENING FOR 
     OKZ004>006-009>011-014-015.

     BLIZZARD WARNING UNTIL 6 PM CST THIS EVENING FOR OKZ016-017-
     021>023-033>038-044.

     WINTER STORM WARNING UNTIL 2 AM CST FRIDAY FOR OKZ008-013-032.

     WINTER STORM WARNING UNTIL 10 PM CST THIS EVENING FOR OKZ007-012-
     043-047-048-051-052.

     BLIZZARD WARNING UNTIL 2 AM CST FRIDAY FOR OKZ020-026-030-031.

TX...BLIZZARD WARNING UNTIL 6 PM CST THIS EVENING FOR TXZ083>090.

&&

$$

26/23

Dec 24 - 336 PM - Winter Weather Message

Jump To Top

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
336 PM CST THU DEC 24 2009

OKZ020-026-030-031-250545-
/O.EXT.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
336 PM CST THU DEC 24 2009

...BLIZZARD WARNING NOW IN EFFECT UNTIL 2 AM CST FRIDAY...

THE BLIZZARD WARNING IS NOW IN EFFECT UNTIL 2 AM CST FRIDAY. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 45 TO 55 MPH. BLIZZARD
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 4 TO 8 INCHES.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ008-013-032-250545-
/O.EXT.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
336 PM CST THU DEC 24 2009

...WINTER STORM WARNING NOW IN EFFECT UNTIL 2 AM CST FRIDAY...

THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 2 AM CST FRIDAY. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ018-019-024-025-027>029-039>042-045-046-050-250400-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0400Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-GRADY-MCCLAIN-CLEVELAND-
STEPHENS-GARVIN-MURRAY-PONTOTOC-JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...YUKON...
EL RENO...MUSTANG...OKLAHOMA CITY...CHICKASHA...PURCELL...
NORMAN...MOORE...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
WAURIKA...ARDMORE...MARIETTA
336 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 45 TO 55 MPH. BLIZZARD
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 4 TO 8
  INCHES...BUT A FEW LOCATIONS MAY RECEIVE AS MUCH AS 8 TO 11
  INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ016-017-021>023-033>038-044-TXZ083>090-250000-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
336 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 6 PM CST THIS EVENING.

* TIMING: REST OF THIS AFTERNOON

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 45 TO 60 MPH. BLIZZARD
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 4 TO 8
  INCHES...BUT A FEW LOCATIONS MAY RECEIVE UP TO 8 TO 11 INCHES.

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY 
  LOW AS ARCTIC AIR BUILDS INTO THE REGION TODAY. WIND CHILLS 
  WILL FALL TO NEAR ZERO THIS EVENING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ007-012-043-047-048-051-052-250400-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-GARFIELD-COAL-JOHNSTON-ATOKA-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...COALGATE...
TISHOMINGO...ATOKA...MADILL...DURANT
336 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 INCHES
  IN NORTH CENTRAL OKLAHOMA AND 2 TO 4 INCHES IN SOUTHEAST
  OKLAHOMA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ004>006-009>011-014-015-250000-
/O.CON.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
336 PM CST THU DEC 24 2009

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...

A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING. 

* TIMING: THE REST OF THIS AFTERNOON

* MAIN IMPACT: STRONG WINDS WILL CAUSE PATCHES OF DRIFTING SNOW...
  AND MAY RESULT IN SLICK SPOTS ON ROADS. 

* OTHER IMPACTS: WIND CHILL TEMPERATURES WILL BECOME DANGEROUSLY
  LOW AS ARCTIC AIR BUILDS INTO THE REGION THIS AFTERNOON. WIND
  CHILLS WILL AVERAGE AROUND 5 TO 10 DEGREES ABOVE ZERO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW AND BLOWING
SNOW WILL CAUSE TRAVEL DIFFICULTIES. STRONG WINDS ARE ALSO
EXPECTED... WHICH ALSO WILL MAKE TRAVEL HAZARDOUS.

&&

$$

CMS

Dec 24 - 507 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
507 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-250100- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
507 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM CONTINUES TO AFFECT OKLAHOMA AND WESTERN NORTH 
TEXAS THROUGH EARLY THIS EVENING. HEAVY SNOW WILL CONTINUE TO AFFECT 
PORTIONS OF CENTRAL AND SOUTH CENTRAL OKLAHOMA.  

AT 5 PM... MODERATE TO HEAVY SNOW CONTINUED OVER THE CENTRAL THIRD  
OF OKLAHOMA. THE HEAVIEST SNOW EXTENDED FROM SOUTH CENTRAL TO 
CENTRAL OKLAHOMA... ESPECIALLY FROM ARDMORE AND PAULS VALLEY... TO 
NORMAN... SHAWNEE... OKLAHOMA CITY METRO... GUTHRIE... CHANDLER AND 
STROUD. SNOWFALL RATES OF ONE TO TWO INCHES PER HOUR WILL OCCUR 
THROUGH EARLY EVENING WITH THESE HEAVIER BANDS OF SNOW. BLIZZARD 
CONDITIONS WILL EXIST AS WELL... WITH NORTH WINDS GUSTING OVER 50 
MPH REDUCING VISIBILITIES TO JUST A FEW HUNDRED FEET OR LESS AT 
TIMES. THE BLOWING SNOW WILL ALSO CONTINUE TO CAUSE DRIFTS OF 
SEVERAL FEET ACROSS THE AREA WHICH WILL CONTINUE HAZARDOUS DRIVING 
CONDITIONS AND CAUSE SOME ROADS TO DRIFT SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS 
FROM CHEROKEE TO FREDERICK OKLAHOMA TO SEYMOUR TEXAS. HOWEVER... 
STRONG NORTH WINDS WILL CONTINUE THROUGH THIS EVENING... CAUSING 
BLOWING AND DRIFTING OF SNOW IN THIS AREA WHICH WILL CONTINUE TO 
REDUCE VISIBILITIES. CONDITIONS ON AREA ROADWAYS WILL CONTINUE TO BE 
HAZARDOUS. CAUTION IS ADVISED THIS EVENING IF TRAVEL IS NECESSARY.  

$$

MAXWELL

Dec 24 - 617 PM - Winter Weather Message

Jump To Top

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
617 PM CST THU DEC 24 2009

OKZ016-017-021>023-033>038-044-TXZ083>090-250130-
/O.EXP.KOUN.BZ.W.0002.000000T0000Z-091225T0000Z/
CUSTER-BLAINE-BECKHAM-WASHITA-CADDO-HARMON-GREER-KIOWA-JACKSON-
TILLMAN-COMANCHE-COTTON-HARDEMAN-FOARD-WILBARGER-WICHITA-KNOX-
BAYLOR-ARCHER-CLAY-
INCLUDING THE CITIES OF...WEATHERFORD...CLINTON...WATONGA...
ELK CITY...SAYRE...CORDELL...ANADARKO...HOLLIS...MANGUM...
HOBART...ALTUS...FREDERICK...LAWTON...WALTERS...QUANAH...
CHILLICOTHE...CROWELL...VERNON...WICHITA FALLS...MUNDAY...
KNOX CITY...SEYMOUR...ARCHER CITY...HOLLIDAY...LAKESIDE CITY...
HENRIETTA
617 PM CST THU DEC 24 2009

...BLIZZARD WARNING WILL EXPIRE AT 6 PM CST THIS EVENING...

THE BLIZZARD WARNING EXPIRED AT 6 PM CST THIS EVENING. 


* IMPACTS: THE SNOW HAS EITHER ENDED OVER MUCH OF WESTERN OKLAHOMA
  AND WESTERN NORTH TEXAS OR WILL BE ENDING SHORTLY EARLY THIS
  EVENING.... HOWEVER ROADWAYS IN MANY AREAS WILL REMAINS SLICK
  AND HAZARDOUS.

* WINDS/VISIBILITY: WINDS WILL CONTINUE TO GUST OVER 40 MPH THIS
  EVENING RESULTING IN SINGLE DIGIT WIND CHILLS. ALTHOUGH
  VISIBILITIES HAVE IMPROVED IN MOST AREAS... A FEW AREAS MAY STILL
  EXPERIENCE REDUCED VISIBILITIES NEAR OPEN FIELDS.

* SNOW ACCUMULATIONS: NO SIGNIFICANT ADDITIONAL SNOWFALL IS
  EXPECTED. 



$$

OKZ004>006-009>011-014-015-250130-
/O.EXP.KOUN.WW.Y.0009.000000T0000Z-091225T0000Z/
HARPER-WOODS-ALFALFA-ELLIS-WOODWARD-MAJOR-ROGER MILLS-DEWEY-
INCLUDING THE CITIES OF...BUFFALO...ALVA...CHEROKEE...ARNETT...
WOODWARD...FAIRVIEW...CHEYENNE...TALOGA
617 PM CST THU DEC 24 2009

...WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING...

THE WINTER WEATHER ADVISORY WILL EXPIRE AT 6 PM CST THIS EVENING.

* IMPACTS: THE SNOW HAS ENDED OVER MUCH OF NORTHWEST OKLAHOMA...
  HOWEVER ROADWAYS IN MANY AREAS WILL REMAINS SLICK. AND
  HAZARDOUS.

* OTHER IMPACTS: WINDS WILL CONTINUE TO GUST OVER 40 MPH THIS
  EVENING RESULTING IN SINGLE DIGIT WIND CHILLS.


$$

OKZ018-019-024-025-027>029-039>042-045-046-050-250400-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0400Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-GRADY-MCCLAIN-CLEVELAND-
STEPHENS-GARVIN-MURRAY-PONTOTOC-JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...YUKON...
EL RENO...MUSTANG...OKLAHOMA CITY...CHICKASHA...PURCELL...
NORMAN...MOORE...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
WAURIKA...ARDMORE...MARIETTA
617 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING. 

* TIMING: THROUGH THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW...LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 35 TO 45 MPH. BLIZZARD
  CONDITIONS AT TIMES WITH CONSIDERABLE BLOWING AND DRIFTING OF
  SNOW RESULTING IN POOR VISIBILITIES. ROADS SLICK AND HAZARDOUS
  WITH SOME ROADS CLOSED. TRAVEL ALONG THE INTERSTATES IN CENTRAL
  OKLAHOMA WILL BE AT A STAND STILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES WILL CONTINUE. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ020-026-030-031-250800-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
617 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY. 

* TIMING: THROUGH LATE TONIGHT.

* MAIN IMPACT: MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW
  VISIBILITY AND STRONG WINDS WITH WIND GUSTS OF 35 TO 45 MPH.
  BLIZZARD CONDITIONS AT TIMES WITH CONSIDERABLE BLOWING AND
  DRIFTING OF SNOW RESULTING IN POOR VISIBILITIES. ROADS SLICK AND
  HAZARDOUS WITH SOME ROADS CLOSED. TOTAL SNOWFALL WILL AVERAGE 4
  TO 8 INCHES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BLIZZARD WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE
EXPECTED OR OCCURRING. FALLING AND BLOWING SNOW WITH STRONG WINDS
AND POOR VISIBILITIES ARE LIKELY. THIS WILL LEAD TO WHITEOUT
CONDITIONS...MAKING TRAVEL EXTREMELY DANGEROUS. DO NOT TRAVEL. IF
YOU MUST...HAVE A WINTER SURVIVAL KIT WITH YOU. IF YOU GET
STRANDED...STAY WITH YOUR VEHICLE.

&&

$$

OKZ008-013-032-250800-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
617 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY. 

* TIMING: ALL OF TODAY AND THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD 
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 
  INCHES. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

OKZ007-012-043-047-048-051-052-250400-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-GARFIELD-COAL-JOHNSTON-ATOKA-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...COALGATE...
TISHOMINGO...ATOKA...MADILL...DURANT
617 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING. 

* TIMING: THROUGH THIS EVENING

* MAIN IMPACT: HEAVY SNOW AND STRONG WINDS. NEAR BLIZZARD 
  CONDITIONS AT TIMES. TOTAL SNOWFALL WILL AVERAGE 3 TO 6 INCHES 
  IN NORTH CENTRAL OKLAHOMA AND 2 TO 4 INCHES IN SOUTHEAST 
  OKLAHOMA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
TO NEAR ZERO AT TIMES...WHICH CAN BE DISORIENTING. THIS WILL MAKE
TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. THIS IS A LIFE THREATENING
STORM.

&&

$$

CJS

Dec 24 - 651 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
651 PM CST THU DEC 24 2009

.AVIATION...
LIFR CONDITIONS IN SNOW AND BLOWING SNOW AT KPNC... KPWA... AND
KOUN WILL GRADUALLY IMPROVE THIS EVENING AS WINDS SLOWLY SUBSIDE
AND SNOWFALL SHIFTS EAST. A STRONG UPPER LEVEL STORM SYSTEM
LOCATED OVER NORTHEAST TEXAS WILL LIFT NORTHEAST ACROSS ARKANSAS
OVERNIGHT BRINGING AN END TO THE WINTER PRECIPITATION LATER TONIGHT.

Dec 24 - 654 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
654 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-250300- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
654 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM CONTINUES TO AFFECT OKLAHOMA EARLY THIS 
EVENING. SNOW GRADUALLY ENDING FROM THE WEST THIS EVENING.  

AT 645 PM... LIGHT TO MODERATE SNOW CONTINUED OVER THE CENTRAL THIRD 
OF OKLAHOMA. SNOWFALL RATES OF ONE INCH PER HOUR OR LESS WILL 
CONTINUE EARLY THIS EVENING. BLIZZARD CONDITIONS WILL CONTINUE AS 
WELL... WITH NORTH WINDS GUSTING OVER 40 MPH REDUCING VISIBILITIES 
TO JUST A FEW HUNDRED FEET AT TIMES. THE BLOWING SNOW WILL ALSO 
CONTINUE TO CAUSE DRIFTS OF SEVERAL FEET ACROSS THE AREA WHICH WILL 
CAUSE SOME ROADS TO DRIFT SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS 
FROM CHEROKEE TO EL RENO AND WAURIKA OKLAHOMA. HOWEVER... THE STRONG 
NORTH WINDS WILL CONTINUE THROUGH THIS EVENING... CAUSING BLOWING 
AND DRIFTING OF SNOW AND CONTINUE TO REDUCE VISIBILITIES FOR A FEW 
HOURS AFTER THE SNOW ENDS. CONDITIONS ON AREA ROADWAYS WILL LIKELY 
REMAIN HAZARDOUS OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS 
NECESSARY.  

$$

MAXWELL

Dec 24 - 851 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
851 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-250500- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
851 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...
A POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST THIS EVENING... 
WITH THE SNOW GRADUALLY ENDING FROM WEST TO EAST.  

AT 845 PM... LIGHT SNOW CONTINUED OVER THE CENTRAL THIRD OF 
OKLAHOMA. NORTH WINDS AT 15 TO 30 MPH WITH GUSTS OVER 40 MPH WILL 
CONTINUE THROUGH THIS EVENING. THE WINDS MAY CONTINUE TO BLOW THE 
SNOW FOR A FEW HOURS AFTER SNOWFALL ENDS LEADING TO SNOW DRIFTS OF 
SEVERAL FEET AND REDUCING VISIBILITIES. SOME ROADS MAY BE DRIFTED 
SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS 
FROM MEDFORD TO WESTERN SIDE OF THE OKLAHOMA CITY METRO... TO 
ARDMORE OKLAHOMA. CONDITIONS ON AREA ROADWAYS WILL LIKELY REMAIN 
HAZARDOUS OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS NECESSARY.  

$$

MAXWELL

Dec 24 - 950 PM - Winter Weather Message

Jump To Top

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
950 PM CST THU DEC 24 2009

OKZ018-019-024-025-027>029-039>042-045-046-050-250500-
/O.EXP.KOUN.BZ.W.0002.000000T0000Z-091225T0400Z/
KINGFISHER-LOGAN-CANADIAN-OKLAHOMA-GRADY-MCCLAIN-CLEVELAND-
STEPHENS-GARVIN-MURRAY-PONTOTOC-JEFFERSON-CARTER-LOVE-
INCLUDING THE CITIES OF...KINGFISHER...GUTHRIE...YUKON...
EL RENO...MUSTANG...OKLAHOMA CITY...CHICKASHA...PURCELL...
NORMAN...MOORE...DUNCAN...PAULS VALLEY...SULPHUR...ADA...
WAURIKA...ARDMORE...MARIETTA
950 PM CST THU DEC 24 2009

...BLIZZARD WARNING WILL EXPIRE AT 10 PM CST THIS EVENING...

THE BLIZZARD WARNING WILL EXPIRE AT 10 PM CST THIS EVENING. 

* IMPACTS: SNOW HAS GENERALLY ENDED ACROSS THE AREA ALTHOUGH LOCAL
  AREAS OF BLOWING SNOW MAY CONTINUE DURING THE EVENING. ROADS
  WILL REMAIN SLICK AND HAZARDOUS WITH SOME ROADWAYS CLOSED. 

* WINDS/VISIBILITY: NORTH TO NORTHWEST WINDS GUSTING TO 35 MPH
  WILL CONTINUE TO RESULT IN WIND CHILLS IN THE SINGLE DIGITS
  OVERNIGHT. VISIBILITIES HAVE GENERALLY IMPROVED ALTHOUGH SOME
  AREAS... ESPECIALLY NEAR OPEN FIELDS... COULD EXPERIENCE LOWERED
  VISIBILITIES IN BLOWING SNOW.


$$

OKZ007-012-043-047-048-051-052-250500-
/O.EXP.KOUN.WS.W.0004.000000T0000Z-091225T0400Z/
GRANT-GARFIELD-COAL-JOHNSTON-ATOKA-MARSHALL-BRYAN-
INCLUDING THE CITIES OF...MEDFORD...ENID...COALGATE...
TISHOMINGO...ATOKA...MADILL...DURANT
950 PM CST THU DEC 24 2009

...WINTER STORM WARNING WILL EXPIRE AT 10 PM CST THIS EVENING...

THE WINTER STORM WARNING WILL EXPIRE AT 10 PM CST THIS EVENING. 

* IMPACTS: SNOW HAS GENERALLY ENDED ACROSS THE AREA ALTHOUGH LOCAL
  AREAS OF BLOWING SNOW MAY CONTINUE DURING THE EVENING. ROADS
  WILL REMAIN SLICK AND HAZARDOUS IN MANY AREAS. 

* WINDS/VISIBILITY: NORTH TO NORTHWEST WINDS GUSTING TO 35 MPH
  WILL CONTINUE TO RESULT IN WIND CHILLS IN THE SINGLE DIGITS
  OVERNIGHT. VISIBILITIES HAVE GENERALLY IMPROVED ALTHOUGH SOME
  AREAS... ESPECIALLY NEAR OPEN FIELDS... COULD EXPERIENCE LOWERED
  VISIBILITIES IN BLOWING SNOW.

$$

OKZ020-026-030-031-250800-
/O.CON.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
950 PM CST THU DEC 24 2009

...BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A BLIZZARD WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY. 

* TIMING: THROUGH LATE TONIGHT.

* MAIN IMPACT: HEAVY SNOW AND BLOWING SNOW... LOW VISIBILITY AND
  STRONG WINDS WITH WIND GUSTS OF 35 MPH. CONSIDERABLE BLOWING AND
  DRIFTING OF SNOW RESULTING IN POOR VISIBILITIES. ROADS SLICK AND
  HAZARDOUS. SNOW TAPERING OFF BY LATE EVENING BUT STRONG WINDS
  CONTINUING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FALLING AND BLOWING SNOW WITH STRONG WINDS AND POOR VISIBILITIES
ARE LIKELY. THIS WILL LEAD TO WHITEOUT CONDITIONS...MAKING TRAVEL
EXTREMELY DANGEROUS. DO NOT TRAVEL. IF YOU MUST...HAVE A WINTER
SURVIVAL KIT WITH YOU. IF YOU GET STRANDED...STAY WITH YOUR
VEHICLE.

&&

$$

OKZ008-013-032-250800-
/O.CON.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
950 PM CST THU DEC 24 2009

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY...

A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 2 AM CST FRIDAY. 

* TIMING: THROUGH EARLY FRIDAY MORNING

* MAIN IMPACT: MODERATE SNOW AND STRONG WINDS RESULTING IN LOW
  VISIBILITIES. WIND CHILLS IN THE SINGLE DIGITS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW ARE
EXPECTED OR OCCURRING. STRONG WINDS WILL ALSO REDUCE VISIBILITY
AT TIMES... MAKING TRAVEL HAZARDOUS.

&&

$$

CJS

Dec 24 - 1037 PM - Area Forecast Discussion

Jump To Top

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1037 PM CST THU DEC 24 2009

.DISCUSSION...
SNOW EVENT WINDING DOWN FAIRLY QUICKLY LATE THIS EVENING WITH
PRECIPITATION CONFINED TO THE FAR EASTERN PART OF THE CWA. WILL
LIKELY BE ABLE TO CANCEL BLIZZARD WARNING FOR THESE AREAS WITHIN
THE NEXT COUPLE OF HOURS. WINDS WILL CONTINUE TO GUST 30 TO 35
MPH FOR MUCH OF THE NIGHT... BUT DOWN CONSIDERABLY FROM EARLIER
TODAY. SINGLE DIGIT WIND CHILLS WILL ALSO PERSIST OVERNIGHT. 

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  31  15  28  14 / 100  70   0   0 
HOBART OK         30  12  29  12 / 100  10  10   0 
WICHITA FALLS TX  34  12  31  14 / 100  10   0   0 
GAGE OK           25   9  28  16 /  70  10   0   0 
PONCA CITY OK     31  16  24  16 / 100  80  10  10 
DURANT OK         45  22  33  19 / 100  80   0  10 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...WINTER STORM WARNING UNTIL 2 AM CST FRIDAY FOR OKZ008-013-032.

     BLIZZARD WARNING UNTIL 2 AM CST FRIDAY FOR OKZ020-026-030-031.

TX...NONE.
&&

$$

25/26

Dec 24 - 1050 PM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1050 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-250600- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1050 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...
THE POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST OVERNIGHT... 
WITH THE SNOW ENDING FROM WEST TO EAST.  

AT 1045 PM... LIGHT SNOW CONTINUED OVER PORTIONS OF NORTH CENTRAL 
AND CENTRAL OKLAHOMA. NORTH WINDS AT 15 TO 25 MPH WITH GUSTS OVER 30 
MPH WILL CONTINUE OVERNIGHT. THE WINDS MAY CONTINUE TO BLOW THE SNOW 
FOR A FEW HOURS AFTER SNOWFALL ENDS LEADING TO SNOW DRIFTS OF 
SEVERAL FEET AND REDUCING VISIBILITIES. SOME ROADS MAY BE DRIFTED 
SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS 
FROM NEAR BLACKWELL TO SHAWNEE... TO ATOKA OKLAHOMA. CONDITIONS ON 
AREA ROADWAYS WILL LIKELY REMAIN HAZARDOUS OVERNIGHT. CAUTION IS 
ADVISED IF TRAVEL IS NECESSARY.  

$$

MAXWELL

Dec 24 - 1148 PM - Winter Weather Message

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URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORMAN OK
1148 PM CST THU DEC 24 2009

OKZ020-026-030-031-250700-
/O.CAN.KOUN.BZ.W.0002.000000T0000Z-091225T0800Z/
PAYNE-LINCOLN-POTTAWATOMIE-SEMINOLE-
INCLUDING THE CITIES OF...STILLWATER...CHANDLER...SHAWNEE...
SEMINOLE
1148 PM CST THU DEC 24 2009

...BLIZZARD WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS CANCELLED THE BLIZZARD
WARNING. 

MOST OF THE SNOW HAS ENDED ACROSS THE AREA. HOWEVER WINDS GUSTING
OVER 30 MPH MAY OCCASIONALLY LOWER VISIBILITIES IN A FEW AREAS
WHILE ALSO RESULTING IN SINGLE DIGIT WIND CHILLS. ROADS ACROSS THE
AREA WILL REMAIN SLICK AND HAZARDOUS OVERNIGHT.

$$

OKZ008-013-032-250700-
/O.CAN.KOUN.WS.W.0004.000000T0000Z-091225T0800Z/
KAY-NOBLE-HUGHES-
INCLUDING THE CITIES OF...PONCA CITY...PERRY...HOLDENVILLE
1148 PM CST THU DEC 24 2009

...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORMAN HAS CANCELLED THE WINTER
STORM WARNING. 

MOST OF THE SNOW HAS ENDED ACROSS THE AREA. HOWEVER WINDS GUSTING
OVER 30 MPH MAY OCCASIONALLY LOWER VISIBILITIES IN A FEW AREAS
WHILE ALSO RESULTING IN SINGLE DIGIT WIND CHILLS. ROADS ACROSS THE
AREA WILL REMAIN SLICK AND HAZARDOUS OVERNIGHT.

$$

CJS

Dec 24 - 1151 PM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1151 PM CST THU DEC 24 2009 

OKZ004>048-050>052-TXZ083>090-250700- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1151 PM CST THU DEC 24 2009 

.REGIONAL WEATHER DISCUSSION...
THE POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST OVERNIGHT... 
WITH THE SNOW ENDING FROM WEST TO EAST.  

AT 1145 PM... LIGHT SNOW CONTINUED OVER PORTIONS OF NORTH CENTRAL 
AND CENTRAL OKLAHOMA. NORTH WINDS AT 15 TO 25 MPH WITH GUSTS OVER 30 
MPH WILL CONTINUE OVERNIGHT. THE WINDS MAY CONTINUE TO BLOW THE SNOW 
FOR A FEW HOURS AFTER SNOWFALL ENDS LEADING TO SNOW DRIFTS OF 
SEVERAL FEET. SOME ROADS MAY BE DRIFTED SHUT.

THE BACK EDGE OF THE SNOWFALL CONTINUES TO MOVE EAST AND EXTENDS 
FROM NEAR BLACKWELL TO STILLWATER... TO STROUD AND HOLDENVILLE 
OKLAHOMA. CONDITIONS ON AREA ROADWAYS WILL LIKELY REMAIN HAZARDOUS 
OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS NECESSARY.  

THE WINDS AND COLD TEMPERATURES WILL ALSO COMBINE LEADING TO VERY 
COLD WIND CHILLS. WIND CHILL VALUES WILL RANGE FROM NEAR ZERO TO 
AROUND 10 DEGREES ABOVE ZERO ACROSS OKLAHOMA AND WESTERN NORTH TEXAS 
THROUGH 2 AM.
$$

MAXWELL

Dec 25 - 1207 AM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1207 AM CST FRI DEC 25 2009

.UPDATE...
SNOW HAS JUST ABOUT ENDED OVER ALL OF THE CWA AND CLOUDS CONTINUE
TO GENERALLY CLEAR FROM THE WEST. WINDS HAVE DIMINISHED ALTHOUGH THEY
WILL STILL GUST OVER 30 MPH OVERNIGHT WHICH COULD STILL RESULT IN
A FEW AREAS OF BLOWING SNOW. HAVE CANCELLED THE BLIZZARD WARNING
FOR THE REMAINDER OF THE NIGHT. WIND CHILLS WILL REMAIN IN THE
SINGLE DIGITS OVERNIGHT.

Dec 25 - 1227 AM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1227 AM CST FRI DEC 25 2009

.AVIATION...
SNOW HAS MOVED OUT OF ALL BUT KPNC TERMINALS EARLY THIS MORNING
WHILE SKIES WILL CONTINUE TO CLEAR FROM THE WEST. A FEW AREAS OF
LIGHT BLOWING SNOW MAY PERSIST FOR A COUPLE MORE HOURS... OTRW VFR
CONDITIONS WILL PREVAIL. NORTH WINDS GUSTING TO NEAR 30 KTS WILL
DIMINISH SLOWLY THROUGH FRIDAY.

Dec 25 - 1258 AM - Short Term Forecast

Jump To Top

SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
1258 AM CST FRI DEC 25 2009 

OKZ004>048-050>052-TXZ083>090-250800- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
1258 AM CST FRI DEC 25 2009 

.REGIONAL WEATHER DISCUSSION...
THE POTENT WINTER STORM WILL CONTINUE TO SHIFT EAST OVERNIGHT... 
WITH THE SNOW ENDING FROM WEST TO EAST.  

AT 1 AM... LIGHT SNOW CONTINUED OVER PORTIONS OF FAR NORTHERN 
OKLAHOMA...EAST OF A LINE FROM YALE NORTHWARD TO PONCA CITY AND 
NEWKIRK. NORTH WINDS AT 15 TO 25 MPH WITH GUSTS OVER 30 MPH WILL 
CONTINUE OVERNIGHT. THE WINDS WILL CONTINUE TO BLOW THE SNOW AFTER 
SNOWFALL ENDS LEADING TO SNOW DRIFTS OF SEVERAL FEET. SOME ROADS MAY 
BE DRIFTED SHUT. CONDITIONS ON AREA ROADWAYS WILL REMAIN HAZARDOUS 
OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS NECESSARY.  

THE WINDS AND COLD TEMPERATURES WILL ALSO COMBINE LEADING TO VERY 
COLD WIND CHILLS. WIND CHILL VALUES WILL RANGE FROM NEAR ZERO TO 
AROUND 10 DEGREES ABOVE ZERO ACROSS OKLAHOMA AND WESTERN NORTH TEXAS 
THROUGH 2 AM.

$$

MAXWELL/TAYLOR

Dec 25 - 211 AM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
211 AM CST FRI DEC 25 2009 

OKZ004>048-050>052-TXZ083>090-250900- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
211 AM CST FRI DEC 25 2009 

.REGIONAL WEATHER DISCUSSION...
 
AT 2 AM... LIGHT SNOW WAS TAPERING OFF IN FAR NORTHERN OKLAHOMA... 
AND HAD ENDED ELSEWHERE ACROSS WESTERN NORTH TEXAS... WESTERN AND 
CENTRAL OKLAHOMA. NORTH WINDS AT 15 TO 20 MPH WITH GUSTS OVER 25 MPH 
WILL CONTINUE OVERNIGHT...MAINLY NEAR AND NORTH OF INTERSTATE 40. 
WIND GUSTS FROM 15 TO 20 MPH CAN BE EXPECTED ELSEWHERE. THE WINDS 
WILL CONTINUE TO BLOW THE SNOW LEADING TO SNOW DRIFTS OF SEVERAL 
FEET. SOME ROADS MAY BE DRIFTED SHUT. CONDITIONS ON AREA ROADWAYS 
WILL REMAIN HAZARDOUS OVERNIGHT. CAUTION IS ADVISED IF TRAVEL IS 
NECESSARY.  

THE WINDS AND COLD TEMPERATURES WILL ALSO COMBINE TO PRODUCE VERY 
COLD WIND CHILL TEMPERATURES. WIND CHILL VALUES WILL RANGE FROM NEAR 
ZERO TO AROUND 10 DEGREES ABOVE ZERO ACROSS OKLAHOMA AND WESTERN 
NORTH TEXAS THROUGH 3 AM.

$$

MAXWELL/TAYLOR

Dec 25 - 311 AM - Short Term Forecast

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SHORT TERM FORECAST
NATIONAL WEATHER SERVICE NORMAN OK
311 AM CST FRI DEC 25 2009 

OKZ004>048-050>052-TXZ083>090-251000- 
ALFALFA-ARCHER-ATOKA-BAYLOR-BECKHAM-BLAINE-BRYAN-CADDO-CANADIAN-
CARTER-CLAY-CLEVELAND-COAL-COMANCHE-COTTON-CUSTER-DEWEY-ELLIS-FOARD-
GARFIELD-GARVIN-GRADY-GRANT-GREER-HARDEMAN-HARMON-HARPER-HUGHES-
JACKSON-JEFFERSON-JOHNSTON-KAY-KINGFISHER-KIOWA-KNOX-LINCOLN-LOGAN-
LOVE-MAJOR-MARSHALL-MCCLAIN-MURRAY-NOBLE-OKLAHOMA-PAYNE-PONTOTOC-
POTTAWATOMIE-ROGER MILLS-SEMINOLE-STEPHENS-TILLMAN-WASHITA-WICHITA-
WILBARGER-
311 AM CST FRI DEC 25 2009 

.REGIONAL WEATHER DISCUSSION...
 
AT 3 AM...THE CENTER OF THE SURFACE LOW ASSOCIATED WITH THE STORM 
SYSTEM WHICH BROUGHT BLIZZARD CONDITIONS TO OKLAHOMA AND NORTH TEXAS 
YESTERDAY WAS LOCATED IN NORTHERN MISSOURI...AND WAS MOVING 
NORTHWARD. AS THIS LOW MOVES AWAY...WIND SPEEDS WILL GRADUALLY 
DECREASE THROUGH THE REST OF THE EARLY MORNING HOURS. THIS DECREASE 
IS RELATIVE...AS GUSTS BETWEEN 25 AND 30 MPH ARE EXPECTED TO 
CONTINUE THROUGH SUNRISE ACROSS NORTHERN OKLAHOMA.

VISIBILITY IS IMPROVING WITH THE DECREASE IN WIND SPEED. HOWEVER... 
MUCH OF THE SNOW ON THE GROUND IS NOT PACKED WELL...AND ANY WIND AT 
ALL WILL TEND TO CAUSE DRIFTING. WITH THE WIND DIRECTION HAVING 
BECOME MORE WESTERLY...THE CONCERN WILL PRIMARILY BE WITH NORTH TO 
SOUTH ROADWAYS...ALTHOUGH DRIFTING IS POSSIBLE ANYWHERE. ALL 
ROADWAYS ARE SLICK AND HAZARDOUS FROM WESTERN NORTH TEXAS THROUGH 
SOUTHWEST AND CENTRAL OKLAHOMA...PLEASE USE CAUTION IF TRAVEL IS 
NECESSARY.

$$

TAYLOR

Dec 25 - 327 AM - Area Forecast Discussion

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AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
327 AM CST FRI DEC 25 2009

.DISCUSSION...
A MAJOR WINTER STORM CONTINUES EXIT THE AREA EARLY THIS MORNING
WITH GENERALLY CLEAR SKIES NOW OVER THE AREA. THE EXCESSIVE WINDS
HAVE DECREASED ALTHOUGH THEY WILL CONTINUE TO GUST NEAR 25 MPH
TODAY WHICH WILL RESULT IN WIND CHILLS IN THE SINGLE DIGITS OVER
MOST OF THE REGION THIS MORNING. TEMPERATURES WILL REMAIN BELOW
FREEZING OVER A LARGE PART OF THE AREA THIS AFTERNOON AND WILL
LIKELY CONTINUE TO BE COLDER THAN GUIDANCE FOR AT LEAST THE NEXT
COUPLE OF DAYS. ANOTHER LOW DROPPING SOUTHEAST THROUGH THE PLAINS
WILL HELP TO REINFORCE THE SURFACE RIDGE OVER THE AREA BY LATE
FRIDAY. NOT OUT OF THE QUESTION THIS SYSTEM COULD GENERATE SOME
FLURRIES BUT FOR NOW WILL ONLY INCREASE CLOUDS SOMEWHAT. OTHERWISE
DRY WEATHER IS EXPECTED THROUGH MONDAY WITH RELATIVELY COLD
TEMPERATURES CONTINUING. BY TUESDAY... THE CHANCE FOR MIXED
PRECIPITATION WILL INCREASE AS A SYSTEM APPROACHES FROM THE WEST
WHILE AREAS OF LOW-LEVEL SUBFREEZING TEMPERATURES REMAIN OVER THE
AREA. THE SCATTERED PRECIPITATION WILL LIKELY LINGER INTO PART OF
WEDNESDAY.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  28  14  31  19 /   0  10  10  10 
HOBART OK         29  14  36  20 /   0   0   0   0 
WICHITA FALLS TX  31  17  38  23 /   0   0   0   0 
GAGE OK           29  16  35  13 /   0   0   0   0 
PONCA CITY OK     25  14  28  15 /   0  10  10  10 
DURANT OK         33  21  36  23 /   0   0  10   0 

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

$$

03/32