Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 809, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 29, 2008, 2:45 PM CDT for Noble County, Oklahoma. It was in force for 30 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 29, 2008, 2:45 PM CDT (19:45 UTC)
- Expired
- Aug 29, 2008, 3:15 PM CDT
- In force
- 30 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
County Noble County, OK
The radar
The Vance AFB radar (KVNX), 89 km from the middle of the area, began a volume at 19:44 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 nearest sounding before it
Fort Sill, OK (KFSI), launched 12:00Z, 7.8 hours before the alert went out and 220 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
- 92 J/kg
- Mixed-layer CIN
- -237 J/kg
- Mixed-layer LCL
- 1880 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 29, 12:28 PM CDT, 2 hours 17 minutes earlier.
Area forecast discussion, Aug 29, 12:28 PM CDT, 2 hours 17 minutes before
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</html>Hazardous weather outlook, Aug 29, 1:05 PM CDT, 1 hour 40 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
105 PM CDT FRI AUG 29 2008
OKZ004>048-050>052-TXZ083>090-301200-
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-
105 PM CDT FRI AUG 29 2008
THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.
.DAY ONE...TODAY AND TONIGHT
THUNDERSTORM OUTLOOK...
A FEW STRONG TO MARGINALLY SEVERE THUNDERSTORMS WILL BE POSSIBLE
MAINLY THIS AFTERNOON AND EVENING.
DISCUSSION...
A WEAK COLD FRONT HAS MOVED INTO NORTHERN OKLAHOMA FRIDAY MORNING.
THUNDERSTORMS IN KANSAS FRIDAY MORNING ALSO CREATED AN OUTFLOW
BOUNDARY THAT EXTENDS ACROSS PORTIONS OF NORTHERN AND CENTRAL
OKLAHOMA AROUND NOON ON FRIDAY. THUNDERSTORMS WILL BE SCATTERED
ACROSS THE AREA THIS AFTERNOON AND EVENING. THESE STORMS WILL MOVE
VERY SLOWLY... SO LOCALIZED HEAVY RAINFALL WILL BE POSSIBLE.
INSTABILITY WILL BE SUFFICIENT FOR A FEW STRONG THUNDERSTORMS WITH
50 TO 60 MPH WIND GUSTS...AND SMALL HAIL. WITH MINIMAL WIND SHEAR...
ANY STRONG TO MARGINALLY SEVERE STORMS WILL BE RELATIVELY
SHORT-LIVED. THUNDERSTORM INTENSITY IS EXPECTED TO DECREASE MID TO
LATE EVENING AS INSTABILITY DECREASES.
PROBABILITY TABLE...
VALID THROUGH 700 AM CDT SATURDAY AUG 30.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...30 PERCENT.
OTHER HAZARDOUS WEATHER...
NONE.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY...
THUNDERSTORM OUTLOOK...
THUNDERSTORMS WILL BE POSSIBLE OVER THE HOLIDAY WEEKEND AS WARM AND
HUMID CONDITIONS CONTINUE... HOWEVER MANY LOCATIONS WILL REMAIN DRY.
FORECAST UNCERTAINTY INCREASES BY EARLY NEXT WEEK...BUT
THUNDERSTORMS APPEAR POSSIBLE...EITHER WITH A FRONTAL SYSTEM
ARRIVING FROM THE NORTHWEST...OR A TROPICAL SYSTEM BRUSHING THE
REGION FROM THE SOUTHEAST.
OTHER HAZARDOUS WEATHER...
NONE.
THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED AT 7 AM
SATURDAY.In the hours before
Special weather statement, Aug 29, 12:45 PM CDT, 2 hours before
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</html>Special weather statement, Aug 29, 1:35 PM CDT, 1 hour 10 minutes before
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</html>Special weather statement, Aug 29, 2:17 PM CDT, 28 minutes before
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</html>Special weather statement, Aug 29, 2:23 PM CDT, 22 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 29, 3:35 PM CDT | Severe Thunderstorm Warning | OUN | Noble, Payne | 25 min |
| Aug 29, 3:59 PM CDT | Severe Thunderstorm Warning | OUN | Payne | 46 min |
| Aug 29, 4:16 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan | 44 min |
| Aug 29, 4:20 PM CDT | Severe Thunderstorm Warning | OUN | Washita | 25 min |
| Aug 29, 5:15 PM CDT | Severe Thunderstorm Warning | OUN | Major, Woods | 45 min |
| Aug 29, 5:28 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Kingfisher | 47 min |
| Aug 29, 6:41 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Woodward | 49 min |
| Aug 29, 6:44 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Grady | 31 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2008Every severe thunderstorm warning in 2008
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.