Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 248, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 13, 2002, 10:20 PM CDT for LeFlore County, Oklahoma. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 13, 2002, 10:20 PM CDT (03:20 UTC)
- Expired
- Aug 13, 2002, 11:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
County LeFlore County, OK
The radar
The Western Arkansas radar (KSRX), 30 km from the middle of the area, began a volume at 03:24 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 3.3 hours before the alert went out and 209 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
- 289 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 879 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
742 WUUS54 KTSA 140320 SVRTUL OKC079-140400- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1020 PM CDT TUE AUG 13 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 1100 PM CDT * AT 1020 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM SPIRO TO 2 MILES EAST OF WISTER...MOVING EAST AT 20 MPH. * SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...POTEAU... HOWE...WISTER...CAMERON...PANAMA...SPIRO AND POCOLA. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 3533 9473 3487 9480 3491 9446 3531 9448
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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 13, 9:00 PM CDT, 1 hour 20 minutes earlier.
Area forecast discussion, Aug 13, 9:00 PM CDT, 1 hour 20 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OKLAHOMA 900 PM CDT TUE AUG 13 2002 UPDATED FORECASTS WILL BE SENT IN THE NEXT HALF HOUR. MAJOR CHANGES WILL BE DROPPING THE WATCH THAT IS EXPIRING FOR PITTSBURG...LATIMER AND LE FLORE COUNTIES AND ADDING A NEW WATCH BANNER FOR PUSHMATAHA AND CHOCTAW COUNTIES. OTHER CHANGES WILL BE RAISING POPS FOR THE OVERNIGHT PERIOD AND ADDING POPS FOR THE MORNING PERIOD. UPPER TROUGH WILL NOT MOVE THROUGH UNTIL THE MORNING AND THERE COULD STILL BE SOMETHING BEHIND THE FRONT MUCH AS THE ETA AND AVN MOS SUGGEST. .TSA... AR...NONE. OK...NONE. ABBAS
In the hours before
Special weather statement, Aug 13, 7:15 PM CDT, 3 hours 5 minutes before
OKZ049-053-065-066-070>076-140200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 715 PM CDT TUE AUG 13 2002 SEVERE THUNDERSTORM WATCH #604 HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES...MUSKOGEE...OKMULGEE...OKFUSKEE...SEQUOYAH...MCINTOSH AND HASKELL... SEVERE THUNDERSTORM WATCH #604 REMAINS IN EFFECT UNTIL 900 PM CDT FOR...LE FLORE...PITTSBURG...LATIMER...PUSHMATAHA AND CHOCTAW COUNTIES... WHILE THUNDERSTORMS ARE EXPECTED OVER ALL OF EASTERN OKLAHOMA THIS EVENING...THE STRONGEST THUNDERSTORMS WILL LIKELY STAY TO THE SOUTH OF A MCALESTER TO WILBURTON TO POTEAU LINE. THUS...THE WATCH HAS BEEN CANCELLED FOR POINTS TO THE NORTH OF THIS LINE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 7:53 PM CDT | Flash Flood Warning | TSA | Pawnee | 2 hr |
| Aug 13, 7:56 PM CDT | Flash Flood Warning | TSA | Pawnee | 2 hr |
| Aug 13, 9:43 PM CDT | Severe Thunderstorm Warning | TSA | Haskell | 47 min |
| Aug 14, 12:52 AM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2002Every severe thunderstorm warning in 2002
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.