Flash Flood Warning
Flash Flood Statement
National Weather Service Denver CO
813 PM MDT Fri Jul 11 2025
COC087-123-120415-
/O.CON.KBOU.FF.W.0006.000000T0000Z-250712T0415Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Morgan CO-Weld CO-
813 PM MDT Fri Jul 11 2025
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM MDT THIS
EVENING FOR WEST CENTRAL MORGAN AND CENTRAL WELD COUNTIES...
At 813 PM MDT, Doppler radar indicated thunderstorms had ended in
the warned area. However, between 2.5 and 4 inches of rain have
fallen with the highest amounts near the Orchard area. Flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, gulches,
roads, and poor drainage and low-lying areas.
Some locations that will experience flash flooding include...
Fort Morgan, Wiggins, Log Lane Village, Weldona, Goodrich, Jackson
Reservoir, Orchard, Riverside Reservoir, Fort Morgan Airport and
Masters.
This includes the following streams and drainages...
Beaver Creek, Kiowa Creek, Wildcat Creek, Bijou Creek, Sanborn
Draw and Badger Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Move to higher ground now. Act quickly to protect your life.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4044 10427 4043 10427 4040 10404 4039 10377
4040 10375 4036 10368 4034 10368 4031 10365
4028 10365 4022 10373 4023 10375 4022 10375
4022 10397 4024 10409 4025 10409 4026 10422
4028 10428 4030 10428 4029 10429 4040 10430
FLASH FLOOD...RADAR INDICATED
$$
RPK
Severe Thunderstorm Watch
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 509
NWS STORM PREDICTION CENTER NORMAN OK
420 PM MDT FRI JUL 11 2025
SEVERE THUNDERSTORM WATCH 509 IS IN EFFECT UNTIL 1100 PM MDT
FOR THE FOLLOWING LOCATIONS
COC069-075-087-095-115-121-123-125-120500-
/O.NEW.KWNS.SV.A.0509.250711T2220Z-250712T0500Z/
CO
. COLORADO COUNTIES INCLUDED ARE
LARIMER LOGAN MORGAN
PHILLIPS SEDGWICK WASHINGTON
WELD YUMA
$$
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 509
NWS STORM PREDICTION CENTER NORMAN OK
420 PM MDT FRI JUL 11 2025
SEVERE THUNDERSTORM WATCH 509 IS IN EFFECT UNTIL 1100 PM MDT
FOR THE FOLLOWING LOCATIONS
NEC007-029-033-049-057-063-069-085-087-101-105-111-123-135-145-
120500-
/O.NEW.KWNS.SV.A.0509.250711T2220Z-250712T0500Z/
NE
. NEBRASKA COUNTIES INCLUDED ARE
BANNER CHASE CHEYENNE
DEUEL DUNDY FRONTIER
GARDEN HAYES HITCHCOCK
KEITH KIMBALL LINCOLN
MORRILL PERKINS RED WILLOW
$$
SEVERE THUNDERSTORM WATCH OUTLINE UPDATE FOR WS 509
NWS STORM PREDICTION CENTER NORMAN OK
420 PM MDT FRI JUL 11 2025
SEVERE THUNDERSTORM WATCH 509 IS IN EFFECT UNTIL 1100 PM MDT
FOR THE FOLLOWING LOCATIONS
WYC001-021-120500-
/O.NEW.KWNS.SV.A.0509.250711T2220Z-250712T0500Z/
WY
. WYOMING COUNTIES INCLUDED ARE
ALBANY LARAMIE
$$
ATTN...WFO...BOU...CYS...GLD...LBF...
Flood Advisory
Flood Advisory
National Weather Service Denver CO
745 PM MDT Fri Jul 11 2025
COC069-120315-
/O.CON.KBOU.FA.Y.0027.000000T0000Z-250712T0315Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Larimer CO-
745 PM MDT Fri Jul 11 2025
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 915 PM MDT THIS EVENING...
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...A portion of north central Colorado, including the
following county, east central Larimer.
* WHEN...Until 915 PM MDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas in
the eastern portion of the Cameron Peak burn area.
* ADDITIONAL DETAILS...
- At 741 PM MDT, Minor flooding is ongoing or expected to
begin shortly. Between 0.3 and 0.7 inches of rain have
fallen.
- This includes the following streams and drainages...
Redstone Creek, Cedar Creek, Eld Creek, Buckhorn Creek, Mill
Creek, Sheep Creek, North Fork Fish Creek, Miller Fork, Dry
Creek and Pendergrass Creek.
Flooding impacts will continue, but no additional rainfall is
expected.
- Some locations that will experience flooding include...
The eastern sections of the Cameron Peak burn scar in East
Central Larimer County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Heavy Rainfall will cause minor flooding of creeks and streams,
roads and roadside culverts in the affected part of the Cameron Peak
burn area. The heavy rains could also trigger rock slides or debris
flows.
&&
LAT...LON 4060 10536 4059 10536 4059 10533 4058 10532
4057 10522 4056 10520 4045 10521 4045 10530
4047 10534 4051 10539 4051 10541 4052 10542
4052 10546 4053 10546 4054 10550 4055 10550
4056 10548 4058 10548 4058 10547 4061 10547
$$
Barjenbruch
Flood Watch
Flood Watch
National Weather Service Denver CO
1157 AM MDT Fri Jul 11 2025
COZ042-044-048>051-120600-
/O.NEW.KBOU.FA.A.0001.250712T0000Z-250712T1200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northeast Weld County-Morgan County-Logan County-Washington
County-Sedgwick County-Phillips County-
Including the cities of Peetz, Pawnee Buttes, Brush, Raymer,
Haxtun, Fort Morgan, Otis, Goodrich, Merino, Julesburg, Grover,
Holyoke, Akron, Briggsdale, Crook, Ovid, Wiggins, Sterling,
Amherst, Last Chance, Stoneham, Cope, and Sedgwick
1157 AM MDT Fri Jul 11 2025
...FLOOD WATCH IN EFFECT FROM 6 PM MDT THIS EVENING THROUGH LATE
TONIGHT...
* WHAT...Flash flooding caused by excessive rainfall is possible
overnight Friday into Saturday morning.
* WHERE...A portion of northeast Colorado, including the following
areas, Logan County, Morgan County, Northeast Weld County,
Phillips County, Sedgwick County and Washington County.
* WHEN...From 6 PM MDT this evening through late tonight.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Extensive street flooding and flooding of creeks and rivers are
possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Bonner
Air Quality Alert
COC013-123-014-031-001-059-005-035-069-122200-
Boulder-Weld-Broomfield-Denver-Adams-Jefferson-Arapahoe-
Douglas-Larimer-
410 PM MDT Fri Jul 11 2025
...OZONE ACTION DAY ALERT FROM 400 PM FRIDAY UNTIL 400 PM
SATURDAY...
The Colorado Department of Public Health and Environment has
issued the following...
WHAT...Ozone Action Day Alert.
WHERE...Douglas, Jefferson, Denver, western Arapahoe, western
Adams, Broomfield, Boulder, Larimer, and Weld Counties
WHEN...400 PM Friday July 11 to 400 PM Saturday July 12
IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Unsettled weather will keep ozone in the
Good to Moderate range on Friday. However, hot, stagnant weather
on Saturday will allow ozone to reach the Unhealthy for Sensitive
Groups level. For Colorado air quality conditions, forecasts, and
advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx If
possible, please help us reduce ozone pollution by limiting
driving gas and diesel-powered vehicles until at least 4 p.m.
Saturday, July 12, 2025. Colorado is also addressing ozone
pollution through state policies. For more information about
health impacts and how ozone pollution forms in Colorado, visit:
https://cdphe.colorado.gov/ozone- pollution-and-your-health
HEALTH INFORMATION...Increasing likelihood of respiratory symptoms
and breathing discomfort in active children and adults and people
with lung disease, such as asthma. Active children and adults, and
people with lung disease, such as asthma, should reduce prolonged
or heavy outdoor exertion.
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Cheyenne WY
243 PM MDT Fri Jul 11 2025
NEZ002-003-019>021-054-055-095-096-WYZ101>119-122045-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
243 PM MDT Fri Jul 11 2025
This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.
.DAY ONE...THIS AFTERNOON AND TONIGHT
- Strong storms and heavy rainfall expected this afternoon and
evening with a slight risk (2 of 5) of severe weather,
alongside a slight risk of heavy rainfall.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
- Temperatures will be warming Sunday through Monday, before a
potent cold front brings cooler temperatures for Tuesday and
Wednesday, with another warming trend for Thursday and Friday.
Shower and thunderstorm chances will be greatest for Tuesday
and Wednesday.
- Elevated fire weather conditions expected late this weekend
and early next week.
.Spotter information statement...
Spotter reports are encourage for severe weather today.
$$
Hazardous Weather Outlook
National Weather Service Rapid City SD
1053 AM MDT Fri Jul 11 2025
SDZ001-002-012>014-024>032-041>044-046-047-049-072>078-WYZ054>060-
121300-
Harding-Northern Perkins-Butte-Northern Meade Co Plains-Ziebach-
Northern Black Hills-Northern Foothills-Rapid City-
Southern Foothills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Pennington Co Plains-Haakon-Western Fall River-
Northern Oglala Lakota-Northern Jackson-Bennett-Mellette-Todd-
Tripp-Sturgis/Piedmont Foothills-Southern Meade Co Plains-
Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota-
Southern Jackson-Southern Perkins-Northern Campbell-
Southern Campbell-Western Crook-Wyoming Black Hills-
Weston County Plains-Newcastle-Northeastern Crook-
1053 AM MDT Fri Jul 11 2025 /1153 AM CDT Fri Jul 11 2025/
This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.
.DAY ONE...Today and Tonight
Thunderstorms and showers are possible today, severe storms are
not expected.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Thunderstorms are possible at times in the period. Severe weather
is not forecast at this time.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today.
&&
Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity
$$
Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
908 AM MDT Fri Jul 11 2025
COZ030>051-121515-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
908 AM MDT Fri Jul 11 2025
This hazardous weather outlook is for northeast and north central
Colorado.
.DAY ONE...Today and Tonight
Scattered to numerous thunderstorms are expected to develop this
afternoon behind a cold front, with heavy rainfall and damaging
winds being of greatest concern, and an isolated threat of large
hail in the stronger, more organized storms. The greatest
moisture is expected over the north central and northeastern
portion of the forecast area (generally north of I-70) where dew
points are already in the mid 50s this morning, and expected to
increase behind the approaching cold front, where dew points are
currently in the 60s. Forecast soundings indicate PWATs increasing
to ~ 1", bringing them to between 100-130% of normal through
tonight across the far northeast corner, with a decreasing
gradient towards the foothills. There is less certainty with how
far west the higher moisture makes it, but there is potential for
the heavy rainfall to make it as far west as the urban corridor.
The heaviest rainfall threat is expected to diminish from west to
east, with showers and thunderstorms sticking around through late
tonight.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Scattered afternoon thunderstorms are expected on Saturday and
Sunday over the higher terrain, with some capable of spilling onto
the plains on Saturday. More of the same will be in store into
next week, with temperatures expected to remain in the 90s for the
first half of next week, and a short reprieve by mid-week, when
high temperatures will be in the 70s/80s for the lower elevations
as widespread showers and storms will return to the forecast area.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today or tonight, but any
observations of severe hail/wind or heavy rainfall reports will be
appreciated.
$$
Hazardous Weather Outlook
National Weather Service Grand Junction CO
338 AM MDT Fri Jul 11 2025
COZ001>014-017>023-UTZ022>025-027>029-120945-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
338 AM MDT Fri Jul 11 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Hot and dry conditions will persist. Terrain based showers and
thunderstorms are possible this afternoon with dry lightning and
outflows winds up to 50 mph possible under collapsing storms.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
Hot and dry conditions will continue into next week. Afternoon
showers and storms on terrain will remain in the forecast. Possible
dry lightning and gusty outflow winds will continue as a threat to
safety.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected at this time.
$$
Hazardous Weather Outlook
National Weather Service Riverton WY
308 AM MDT Fri Jul 11 2025
WYZ001>020-022>030-121300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
308 AM MDT Fri Jul 11 2025
This Hazardous Weather Outlook is for Western and Central Wyoming.
.DAY ONE...Today and Tonight.
Isolated thunderstorms possible, mainly along and East of the
Continental Divide.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
Monday...A chance of showers and thunderstorms. Elevated fire
weather possible.
Tuesday and Wednesday...A chance of showers and thunderstorms each
day.
.SPOTTER INFORMATION STATEMENT...
Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.
$$
$$