Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 626, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 8, 2013, 3:23 AM CDT for Grant County, Kay County, Oklahoma. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 8, 2013, 3:23 AM CDT (08:23 UTC)
- Expired
- Aug 8, 2013, 4:15 AM CDT
- In force
- 52 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
Counties Grant County, OK, Kay County, OK
The radar
The Vance AFB radar (KVNX), 59 km from the middle of the area, began a volume at 08:27 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 7, 10:24 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 8.4 hours before the alert went out and 177 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2838 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1509 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.3
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 8, 2:31 AM CDT, 52 minutes earlier.
Area forecast discussion, Aug 8, 2:31 AM CDT, 52 minutes before
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</html>Hazardous weather outlook, Aug 7, 8:55 PM CDT, 6 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE NORMAN OK
855 PM CDT WED AUG 7 2013
OKZ004>048-050>052-TXZ083>090-081000-
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-
855 PM CDT WED AUG 7 2013
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TONIGHT...
THUNDERSTORM OUTLOOK...
THERE IS A RISK OF SEVERE THUNDERSTORMS LATE THIS EVENING AND
OVERNIGHT ACROSS THE NORTHERN-HALF OF OKLAHOMA.
LOCATION...
THE RISK AREA COVERS LOCATIONS NORTH OF INTERSTATE-40.
TIMING...
THE MOST LIKELY TIME FOR SEVERE THUNDERSTORMS WILL BE AFTER
10 PM.
IMPACTS...
THE MAIN CONCERN WITH ANY SEVERE THUNDERSTORM WILL BE DAMAGING
WIND GUSTS UP TO 70 MPH.
RECOMMENDED ACTIONS...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
THE RISK AREA SHOULD BE PREPARED FOR SEVERE WEATHER OPERATIONS
INTO THE OVERNIGHT HOURS.
DISCUSSION...
NUMEROUS STORMS OVER THE PANHANDLES ARE EXPECTED TO CONSOLIDATE
INTO ONE OR MORE CLUSTERS AND MOVE EASTWARD LATE THIS EVENING
AND OVERNIGHT. THE PRIMARY AREAS THAT COULD BE AFFECTED WILL BE
FAR NORTHWEST AND NORTH-CENTRAL OKLAHOMA...INCLUDING WOODWARD...
ALVA...ENID...AND PONCA CITY. HOWEVER...LOCATIONS FARTHER SOUTH
TOWARD THE INTERSTATE-40 CORRIDOR SHOULD NOT LET THEIR GUARD
DOWN. ALTHOUGH THE PRIMARY CONCERN WILL BE DAMAGING WIND GUSTS
ALONG THE LEADING EDGE OF STORMS...A FEW STORMS COULD ALSO
PRODUCE HAIL UP TO THE SIZE OF HALF DOLLARS.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT THURSDAY AUG 8.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...60 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY...
THUNDERSTORM OUTLOOK...
STORM CHANCES WILL CONTINUE ACROSS THE AREA THURSDAY INTO THE
WEEKEND AND THE EARLY PART OF NEXT WEEK AS A WEAK COLD FRONT REMAINS
IN THE AREA. THERE WILL BE A CHANCE FOR A FEW SEVERE THUNDERSTORMS
ON THURSDAY ACROSS OKLAHOMA AND WESTERN NORTH TEXAS AS SUFFICIENT
INSTABILITY WILL CONTINUE TO BE PRESENT. LARGE HAIL AND DAMAGING
WIND GUSTS WILL BE THE PRIMARY CONCERNS. HEAVY RAINFALL AND LOCALIZED
FLOODING WILL ALSO BE POSSIBLE.
OTHER HAZARDOUS WEATHER...
HOT CONDITIONS WILL CONTINUE THROUGH THURSDAY MAINLY ACROSS FAR
SOUTHERN OKLAHOMA AND ALL OF WESTERN NORTH TEXAS. PLEASE TAKE STEPS
TO PREVENT HEAT RELATED ILLNESSES.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED BY 5 AM
THURSDAY.In the hours before
Local storm report, Aug 8, 12:37 AM CDT, 2 hours 46 minutes before
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</html>Special weather statement, Aug 8, 12:52 AM CDT, 2 hours 31 minutes before
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</html>Special weather statement, Aug 8, 1:39 AM CDT, 1 hour 44 minutes before
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</html>Special weather statement, Aug 8, 2:02 AM CDT, 1 hour 21 minutes before
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</html>Local storm report, Aug 8, 2:17 AM CDT, 1 hour 6 minutes before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 10:10 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 50 min |
| Aug 7, 10:50 PM CDT | Special Weather Statement | OUN | Greer, Tillman | 25 min |
| Aug 7, 11:03 PM CDT | Special Weather Statement | OUN | Oklahoma | 27 min |
| Aug 7, 11:18 PM CDT | Special Weather Statement | OUN | Harper | 27 min |
| Aug 7, 11:23 PM CDT | Special Weather Statement | OUN | Beckham, Kiowa, Washita | 37 min |
| Aug 7, 11:42 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper | 48 min |
| Aug 8, 12:10 AM CDT | Special Weather Statement | OUN | Caddo, Kiowa, Washita | 35 min |
| Aug 8, 12:32 AM CDT | Special Weather Statement | OUN | Ellis, Harper | 28 min |
| Aug 8, 12:52 AM CDT | Special Weather Statement | OUN | Custer, Roger Mills | 23 min |
| Aug 8, 12:56 AM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey, Roger Mills | 49 min |
| Aug 8, 1:39 AM CDT | Special Weather Statement | OUN | Major | 21 min |
| Aug 8, 2:02 AM CDT | Special Weather Statement | OUN | Alfalfa, Blaine, Kingfisher, Major, Woods | 43 min |
| Aug 8, 2:12 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Blaine, Garfield, Grant, Major, Woods | 48 min |
| Aug 8, 2:50 AM CDT | Areal Flood Advisory | OUN | Alfalfa, Woods | 3 hr |
| Aug 8, 3:00 AM CDT | Severe Thunderstorm Warning | OUN | Grant | 45 min |
| Aug 8, 11:46 AM CDT | River Flood Warning | OUN | Major, Woods, Woodward | 10 hr |
| Aug 8, 3:38 PM CDT | Flood Watch | OUN | Alfalfa, Garfield, Grant, Harper, Kay, Major and 3 more | 21 hr |
| Aug 8, 4:45 PM CDT | Special Weather Statement | OUN | Cotton | 15 min |
| Aug 8, 5:02 PM CDT | Special Weather Statement | OUN | Cotton | 28 min |
| Aug 8, 5:23 PM CDT | Special Weather Statement | OUN | Cotton | 22 min |
| Aug 8, 5:51 PM CDT | Special Weather Statement | OUN | Cotton | 24 min |
| Aug 8, 6:14 PM CDT | Special Weather Statement | OUN | Harper | 31 min |
| Aug 8, 6:20 PM CDT | Special Weather Statement | OUN | Cotton | 25 min |
| Aug 8, 6:37 PM CDT | Special Weather Statement | OUN | Kiowa | 23 min |
| Aug 8, 6:53 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa | 52 min |
| Aug 8, 3:40 PM CDT | Special Weather Statement | OUN | Baylor | 35 min |
| Aug 8, 4:10 PM CDT | Special Weather Statement | OUN | Baylor | 20 min |
| Aug 8, 4:17 PM CDT | Severe Thunderstorm Warning | OUN | Baylor | 43 min |
| Aug 8, 5:53 PM CDT | Special Weather Statement | OUN | Hardeman | 22 min |
| Aug 8, 5:56 PM CDT | Special Weather Statement | OUN | Baylor | 19 min |
| Aug 8, 6:11 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman | 49 min |
| Aug 8, 6:31 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor, Knox | 59 min |
| Aug 8, 6:57 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman, Wilbarger | 48 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2013Every severe thunderstorm warning in 2013
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.