Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 244, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 10, 2002, 3:46 PM CDT for Tulsa County, Oklahoma. It was in force for 44 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 10, 2002, 3:46 PM CDT (20:46 UTC)
- Expired
- Aug 10, 2002, 4:30 PM CDT
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
County Tulsa County, OK
The radar
The Tulsa radar (KINX), 42 km from the middle of the area, began a volume at 20:46 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
Lamont, OK (KLMN), launched 12:00Z, 8.8 hours before the alert went out and 153 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
- 97 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 1542 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
699 WUUS54 KTSA 102046 SVRTUL OKC143-102130- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 345 PM CDT SAT AUG 10 2002 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN TULSA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 430 PM CDT * AT 345 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER GLENPOOL...MOVING EAST AT 10 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...BIXBY... JENKS...GLENPOOL AND BROKEN ARROW. HAIL TO THE SIZE OF DIMES AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 3606 9608 3588 9612 3587 9579 3604 9575
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 10, 10:55 AM CDT, 4 hours 51 minutes earlier.
Area forecast discussion, Aug 10, 10:55 AM CDT, 4 hours 51 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OKLAHOMA 1055 AM CDT SAT AUG 10 2002 15Z SURFACE ANALYSIS IS A CHALLENGE TO UNTANGLE...HOWEVER SATELLITE/RADAR TRENDS SHED SOME LIGHT ON PLACEMENT OF SMALL SCALE BOUNDARIES. WEST TEXAS MCS HAS PLACED A BOUNDARY ACROSS WESTERN OKLAHOMA WITH ANOTHER BOUNDARY APPARENT ALONG THE RED RIVER VALLEY INTO EASTERN OKLAHOMA PER VIS SATELLITE IMAGERY. ONGOING CONVECTION IN EASTERN OKLAHOMA APPEARS TO BE ORIENTED ALONG THIS FEATURE. LOW LEVEL MOISTURE HAS MADE A NOTICEABLE RETURN ACROSS THE AREA WITH 24HR DEW POINT RISES AOA 10 DEG F IN MANY LOCALES. 12Z UPPER AIR ANALYSIS SHOWS MID LEVEL TROUGH AXIS HANGING BACK INTO WESTERN OKLAHOMA WITH APPARENT MESOSCALE CONVECTIVE VORTEX SITUATED ACROSS SW KANSAS ON TAIL END OF LARGE SCALE TROUGH AXIS. THIS FEATURE WILL PROGRESS SLOWLY EASTWARD TODAY AS RIGHT REAR QUADRANT OF UPPER JET ALSO MOVES ACROSS THE AREA TO PROVIDE UPPER LEVEL SUPPORT FOR AFTERNOON THUNDERSTORM DEVELOPMENT. SEVERE POTENTIAL QUESTIONABLE GIVEN VERY WEAK WINDS IN THE 800-600MB LEVEL...HOWEVER ADEQUATE SURFACE HEATING AND ABUNDANT LOW LEVEL MOISTURE WILL YIELD ADEQUATE SURFACE BASED CAPE FOR POTENTIAL PULSE SEVERE WITH WET DOWNBURSTS BEING THE GREATEST THREAT. UPDATE WISE...WILL TREND POPS UP AREAWIDE WITH HIGHEST POPS ALONG SURFACE BOUNDARY WHERE CURRENT CONVECTION CONTINUES TO DEVELOP. TEMPS WILL BE A LAST MINUTE ADJUSTMENT...BUT DON/T EXPECT TOO MUCH CHANGE. FORECAST ID= 07 .TSA... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Aug 10, 1:00 PM CDT, 2 hours 46 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-111200- EASTERN OKLAHOMA / NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT SAT AUG 10 2002 ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE TODAY ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS... SCATTERED THUNDERSTORMS WITH HEAVY RAINFALL WILL BE POSSIBLE ACROSS THE ENTIRE OUTLOOK AREA THROUGH SATURDAY NIGHT...WITH A GENERAL DECREASE IN THUNDERSTORM ACTIVITY EXPECTED AFTER SUNSET. LOCATIONS SOUTHEAST OF A LINE FROM FAYETTEVILLE TO MCALESTER WILL HAVE THE HIGHEST RAIN CHANCES...HOWEVER AN APPROACHING UPPER DISTURBANCE WILL HELP IGNITE ADDITIONAL THUNDERSTORMS ACROSS NORTHERN OKLAHOMA BY LATE AFTERNOON. THE SEVERE WEATHER THREAT IS EXPECTED TO BE VERY ISOLATED DURING THE AFTERNOON HOURS. .SPOTTER ACTIVATION... SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE ISOLATED SEVERE WEATHER THREAT. .DISCUSSION... NUMEROUS SURFACE BOUNDARIES ARE LOCATED ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON PROVIDING A FOCUS FOR THUNDERSTORM DEVELOPMENT. A SMALL SCALE UPPER DISTURBANCE WILL ALSO APPROACH THE AREA BY LATE AFTERNOON PROVIDING ADDITIONAL UPPER SUPPORT FOR THUNDERSTORM DEVELOPMENT. WEAK WINDS ALOFT WILL LIMIT THE SEVERE WEATHER THREAT...HOWEVER STRONG STRAIGHT LINE WINDS WILL BE POSSIBLE WITH ANY COLLAPSING THUNDERSTORM. VERY HEAVY RAINFALL WILL ALSO ACCOMPANY THE STORMS WITH FLOODING OF LOW LYING AREAS POSSIBLE. RISK TABLE VALID THROUGH 1200 UTC SUNDAY AREA 1...ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THUNDERSTORM PROBABILITY...70 SEVERE PROBABILITY IF STORMS OCCUR...10 SIGNIFICANT SEVERE PROBABILITY IF STORMS OCCUR...2 RISK AREAS DEFINE THE GREATEST SEVERE POTENTIAL. PROBABILITIES ARE IN PERCENT. SIGNIFICANT SEVERE IS DEFINED AS F1 OR GREATER WIND/TORNADO DAMAGE AND/OR GOLFBALL SIZE HAIL OR LARGER.
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.