Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 377, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 11, 2003, 2:50 PM CDT for Choctaw 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 11, 2003, 2:50 PM CDT (19:50 UTC)
- Expired
- Aug 11, 2003, 3:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Tulsa, OK
- Area
- Counties, with a storm outline in the text
County Choctaw County, OK
The radar
The Western Arkansas radar (KSRX), 164 km from the middle of the area, began a volume at 19:51 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
Shreveport, LA (KSHV), launched 12:00Z, 7.8 hours before the alert went out and 222 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
- 1071 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 111950 SVRTUL OKC023-112030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 250 PM CDT MON AUG 11 2003 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN CHOCTAW COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 330 PM CDT * AT 249 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES NORTH OF FORT TOWSON...MOVING SOUTH AT 15 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...SAWYER AND FORT TOWSON. HAIL TO THE SIZE OF PENNIES 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 3419 9517 3420 9539 3376 9546 3375 9516 $$
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 11, 10:25 AM CDT, 4 hours 25 minutes earlier.
Area forecast discussion, Aug 11, 10:25 AM CDT, 4 hours 25 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OKLAHOMA 1025 AM CDT MON AUG 11 2003 PLENTY OF MID CLOUDS TO CONTEND WITH THIS MORNING...AND SOME LINGERING RA/TSRA. FOCUS FOR ADDITIONAL THUNDERSTORM DEVELOPMENT THIS AFTERNOON WILL BE A S/W THAT WILL MOVE SOUTH ACROSS IOWA AND MISSOURI. CURRENT POPS LOOK GOOD AND WILL LEAVE THE AS THEY ARE. WENT ADDED AND ADDED MORE SKY COVER TO GFE GRIDS TO BETTER REFLECT A MOSTLY CLOUDY SKY. WENT AHEAD AND TWEAKED TEMPS DOWN A DEGREE OR SO TO ACCOUNT FOR CLOUD COVER. OTHERWISE REST OF FORECAST WILL BE LEFT AS IS. UPDATED ZONES OUT BY 1530Z. FORECAST ID= 23 .TSA... AR...NONE. OK...NONE.
Hazardous weather outlook, Aug 11, 2:08 PM CDT, 42 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-121100- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT MON AUG 11 2003 THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS MUCH OF EASTERN OKLAHOMA. .DAY ONE...THIS AFTERNOON AND TONIGHT SEVERE WEATHER OUTLOOK ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EVENING... AN UPPER LEVEL DISTURBANCE CENTERED OVER WESTERN MISSOURI EARLY THIS AFTERNOON WILL MOVE SOUTH SOUTHWEST INTO EASTERN OKLAHOMA BY EARLY EVENING. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON IN ASSOCIATION WITH THIS DISTURBANCE. WHILE NO ORGANIZED SEVERE WEATHER IS EXPECTED...INSTABILITY WILL BE SUFFICIENT FOR THE POSSIBILITY OF ISOLATED SEVERE STORMS WITH WINDS UP TO 60 MILES AN HOUR AND HAIL UP TO THE SIZE OF PENNIES. THE COVERAGE AND INTENSITY OF THUNDERSTORMS WILL DIMINISH THIS EVENING WITH THE LOSS OF DAYTIME HEATING. WARNING PROBABILITIES FOR SEVERE THUNDERSTORMS AND TORNADOES CAN BE FOUND IN THE OUTLOOK SECTION AT: WWW.SRH.NOAA.GOV/TULSA. GIVEN PROBABILITIES REPRESENT THE POTENTIAL FOR A WARNING TO BE ISSUED AT YOUR LOCATION. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY UNSETTLED WEATHER WILL CONTINUE THROUGH FRIDAY WITH WIDELY SCATTERED MAINLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS POSSIBLE EACH DAY. HIGH PRESSURE ALOFT WILL BUILD OVER THE AREA BY THE WEEKEND BRINGING DRY WEATHER AT THAT TIME. .SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT... SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD CONTINUE TO MONITOR THE LATEST CONDITIONS AND BE PREPARED FOR POSSIBLE ACTIVATION THIS AFTERNOON AND EVENING. ADDITIONAL WEATHER INFORMATION CAN BE FOUND AT... WWW.SRH.NOAA.GOV/TULSA
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2003Every severe thunderstorm warning in 2003
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.