A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >
There were two rounds of strong to severe thunderstorms that impacted the region over the weekend of the March 30-31, 2013. The first round of severe weather developed in the evening across portions of southern and central Oklahoma along a weak pre-frontal trough that stretched across the Southern Plains from the Caprock to the Missouri Ozarks. Clearing across the western half of Oklahoma through the late morning and early afternoon resulted in temperatures climbing into the 70s and 80s. Combined with these warm temperatures, seasonable dew points in the mid to upper 50s provided good overall instability from central Oklahoma to northern Texas. Between 5 and 6 PM CDT, a few isolated thunderstorms quickly developed near the Wichita Mountains and central Oklahoma. Large hail developed with these storms, with many reports (see summary in the Local Storm Reports tab) of 1 to 1.5 inch hail. The strongest of these storms, over Comanche County, near Cache, produced 2.30 inch hail. The few isolated updrafts slowly weakened/dissipated through 10pm, leading to a lull in activity until later in the evening as the primarily cold front finally surged through the region.
The second round of thunderstorms were focused primarily along a strong cold front that surged southward across the Oklahoma and into northern Texas by Sunday morning. The first showers developed shortly before midnight across northwestern Oklahoma, and quickly intensified through the early morning hours of the March 31, 2013 as the front quickly moved southward into the better axis of instability across central Oklahoma. These initial updrafts quickly intensified and congealed into a semi-organized squall line that moved directly through the Oklahoma City metro after 3 AM CDT. Winds along this line were estimated to be near 60 mph, with reports of quarter sized hail in OKC, numerous reports of quarter to golf ball sized hail in Norman, and quarter sized south through Carter and Johnston Counties. The squall line surged quickly to the south crossing the Red River Valley between 6 and 7 AM CDT where it continued to produce large hail and severe winds across northern Texas.
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0615 PM HAIL 6 NNW CACHE 34.71N 98.66W
03/30/2013 E1.00 INCH COMANCHE OK PARK/FOREST SRVC
AT CAMP DORIS IN WICHITA WILDLIFE REFUGE
0620 PM HAIL CACHE 34.63N 98.62W
03/30/2013 E1.50 INCH COMANCHE OK TRAINED SPOTTER
0625 PM HAIL 3 NW LAKE LAWTONKA 34.76N 98.54W
03/30/2013 E1.00 INCH COMANCHE OK TRAINED SPOTTER
0630 PM HAIL 6 SE CACHE 34.57N 98.54W
03/30/2013 E1.25 INCH COMANCHE OK PUBLIC
NEAR INTERSECTION OF DEYO MISSION RD AND SW WOODLAWN DR.
0633 PM HAIL CACHE 34.63N 98.62W
03/30/2013 E1.75 INCH COMANCHE OK TRAINED SPOTTER
0642 PM HAIL 1 ENE CACHE 34.63N 98.60W
03/30/2013 M2.30 INCH COMANCHE OK TRAINED SPOTTER
0701 PM HAIL 7 WSW LAWTON 34.56N 98.54W
03/30/2013 E1.25 INCH COMANCHE OK TRAINED SPOTTER
0704 PM HAIL 7 SE CACHE 34.56N 98.53W
03/30/2013 E1.00 INCH COMANCHE OK TRAINED SPOTTER
0704 PM HAIL 4 NW EARLSBORO 35.30N 96.85W
03/30/2013 E0.50 INCH POTTAWATOMIE OK FIRE DEPT/RESCUE
0727 PM HAIL 5 WSW ELGIN 34.75N 98.37W
03/30/2013 E1.75 INCH COMANCHE OK TRAINED SPOTTER
0735 PM HAIL 2 NW SEMINOLE 35.25N 96.70W
03/30/2013 E0.50 INCH SEMINOLE OK PUBLIC
0802 PM HAIL 5 WNW WALTERS 34.38N 98.39W
03/30/2013 E1.00 INCH COTTON OK TRAINED SPOTTER
0805 PM HAIL 3 W WALTERS 34.36N 98.36W
03/30/2013 E1.00 INCH COTTON OK BROADCAST MEDIA
0833 PM HAIL 5 SW POCASSET 35.14N 98.02W
03/30/2013 E1.00 INCH GRADY OK TRAINED SPOTTER
0854 PM HAIL HOLDENVILLE 35.08N 96.40W
03/30/2013 E1.00 INCH HUGHES OK EMERGENCY MNGR
0900 PM HAIL 3 W TABLER 35.05N 97.87W
03/30/2013 E1.00 INCH GRADY OK TRAINED SPOTTER
0332 AM HAIL 9 WSW OKLAHOMA CITY 35.42N 97.66W
03/31/2013 E1.50 INCH OKLAHOMA OK PUBLIC
0352 AM HAIL 4 WNW NORMAN 35.24N 97.51W
03/31/2013 E1.25 INCH CLEVELAND OK PUBLIC
0354 AM HAIL NORMAN 35.22N 97.44W
03/31/2013 E1.25 INCH CLEVELAND OK TRAINED SPOTTER
0355 AM TSTM WND GST 2 NW NORMAN 35.24N 97.47W
03/31/2013 M59.00 MPH CLEVELAND OK AWOS
MAX WESTHEIMER AIRPORT
0355 AM HAIL NORMAN 35.22N 97.44W
03/31/2013 E1.00 INCH CLEVELAND OK PUBLIC
NW 36TH AND MAIN STREET
0400 AM HAIL 2 S NOBLE 35.11N 97.39W
03/31/2013 E1.75 INCH CLEVELAND OK TRAINED SPOTTER
0400 AM HAIL 2 SSW NORMAN 35.19N 97.46W
03/31/2013 E1.75 INCH CLEVELAND OK PUBLIC
0400 AM HAIL NORMAN 35.22N 97.44W
03/31/2013 E1.25 INCH CLEVELAND OK TRAINED SPOTTER
INTERSECTION OF FLOOD AND CRUCE STREETS
0400 AM HAIL 2 WSW NORMAN 35.21N 97.47W
03/31/2013 E2.00 INCH CLEVELAND OK PUBLIC
SW 24TH AND BROOKS STREET
0400 AM TSTM WND GST 2 WSW NORMAN 35.21N 97.47W
03/31/2013 E60.00 MPH CLEVELAND OK PUBLIC
0400 AM HAIL 3 SSE NORMAN 35.18N 97.42W
03/31/2013 E1.00 INCH CLEVELAND OK NWS EMPLOYEE
AT THE NWS FORECAST OFFICE
0405 AM HAIL 1 SW NORMAN 35.21N 97.45W
03/31/2013 E1.25 INCH CLEVELAND OK TRAINED SPOTTER
0424 AM HAIL 1 E NOBLE 35.14N 97.38W
03/31/2013 E1.50 INCH CLEVELAND OK TRAINED SPOTTER
0445 AM HAIL 3 W WAYNE 34.92N 97.37W
03/31/2013 E1.00 INCH MCCLAIN OK BROADCAST MEDIA
0510 AM TSTM WND GST 5 E STRINGTOWN 34.47N 95.97W
03/31/2013 E60.00 MPH ATOKA OK PUBLIC
0510 AM TSTM WND DMG 6 S DICKSON 34.10N 96.99W
03/31/2013 CARTER OK PUBLIC
TREE LIMBS UP TO FOUR INCHES IN DIAMETER SNAPPED OFF BY
THUNDERSTORM WINDS.
0510 AM HAIL 1 N VANOSS 34.78N 96.87W
03/31/2013 E1.75 INCH PONTOTOC OK EMERGENCY MNGR
0530 AM HAIL 2 WNW ROFF 34.64N 96.87W
03/31/2013 E1.00 INCH PONTOTOC OK CO-OP OBSERVER
0530 AM TSTM WND DMG SULPHUR 34.51N 96.97W
03/31/2013 MURRAY OK LAW ENFORCEMENT
A WINDOW WAS BLOWN OUT AT A LOCAL BUSINESS. A POWER LINE
WAS ALSO DOWN. TIME OF THE REPORT ESTIMATED.
0557 AM HAIL ARDMORE 34.17N 97.14W
03/31/2013 E1.00 INCH CARTER OK TRAINED SPOTTER
0600 AM HAIL 2 SW MANNSVILLE 34.17N 96.90W
03/31/2013 E1.00 INCH MARSHALL OK PUBLIC
0612 AM HAIL 1 N FILLMORE 34.29N 96.50W
03/31/2013 E1.00 INCH JOHNSTON OK CO-OP OBSERVER
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The radar loop spans from 5:07 PM CDT on March 30, 2013 through 5:59 AM CDT on March 31, 2013.
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