Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 87, NWS Tulsa, OK

May 2, 2003Choctaw County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 2, 2003, 9:45 PM CDT for Choctaw County, Oklahoma. It was in force for 60 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
May 2, 2003, 9:45 PM CDT (02:45 UTC)
Expired
May 2, 2003, 10:45 PM CDT
In force
60 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), 175 km from the middle of the area, began a volume at 02:48 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

Fort Worth, TX (KFWD), launched 00:00Z, 2.8 hours before the alert went out and 217 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.

Skew-T log-pSkew-T log-p diagram, Fort Worth, TX at 00:00Z on 2003-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2747 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2003-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2747 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
846 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
168 m²/s²
Significant tornado parameter
3.2
Supercell composite
12.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KTSA 030245
SVRTUL
OKC023-030345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
946 PM CDT FRI MAY 2 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN CHOCTAW COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 1045 PM CDT

* AT 946 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7
  MILES SOUTHEAST OF HUGO...MOVING EAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...HUGO...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 3404 9552 3386 9556 3381 9514 3401 9512

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 May 2, 9:00 PM CDT, 45 minutes earlier.

Area forecast discussion, May 2, 9:00 PM CDT, 45 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
900 PM CDT FRI MAY 2 2003

STALLED FRONTAL BOUNDARY CURRENTLY RESIDES SOUTH OF CWA ALTHOUGH
DEWPOINTS ACROSS SOUTHERN COUNTIES ARE STILL IN THE MID 60S. SHOWERS
HAVE RECENTLY DEVELOPED OVER EXTREME SOUTHEAST OKLAHOMA AND ARE
RAPIDLY MOVING EASTWARD. KSRX RADAR CURRENTLY SHOWS SOME LIGHT
SHOWERS TRYING TO REDEVELOP OVER PUSHMATAHA AND CHOCTAW COUNTIES.

WILL CONTINUE SLIGHT CHANCE OF THUNDER ACROSS OUR SOUTHERN COUNTIES
OVERNIGHT. TEMPS AND SKY COVER APPEAR TO BE ON TRACK AT THIS TIME.
HAVE LOWERED WINDS ACROSS THE ENTIRE CWA AS WE HAVE GONE LIGHT TO
CALM IN MOST AREAS. UPDATE WILL BE OUT SHORTLY.

FORECAST ID= 06

.TSA...
AR...NONE.
OK...NONE.
Hazardous weather outlook, May 2, 1:00 PM CDT, 8 hours 45 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-031200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT FRI MAY 2 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

...CHANCE FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING...
THE COLD FRONT THAT MOVED ACROSS THE AREA ON THURSDAY WAS LOCATED
ACROSS NORTHEAST TEXAS AND SOUTHERN ARKANSAS THIS AFTERNOON. THE
FRONT MAY MAKE SOME ADDITIONAL SOUTHWARD PROGRESS BEFORE BECOMING
NEARLY STATIONARY LATER THIS AFTERNOON. THIS FEATURE WILL AGAIN BE
THE FOCUS FOR THUNDERSTORM DEVELOPMENT THIS AFTERNOON.  WITH DAYTIME
HEATING STORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON STARTING NEAR
THE FRONT OVER NORTH CENTRAL OR NORTHEAST TEXAS. IF STORMS DEVELOP
NORTH OF THE BOUNDARY THEY WILL HAVE THE POTENTIAL TO MOVE INTO FAR
SOUTHEAST OKLAHOMA AND DURING THE LATE AFTERNOON AND EVENING
HOURS...AND POSSIBLY INTO WEST CENTRAL ARKANSAS THIS EVENING. THE
GREATEST THREAT FOR SEVERE WEATHER WILL BE LIKELY BE TO THE SOUTH OF
A MCALESTER TO FORT SMITH LINE. LARGE HAIL AND DAMAGING WINDS WILL
BE POSSIBLE.

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...SATURDAY THROUGH THURSDAY
THE FRONTAL BOUNDARY NEAR THE RED RIVER IS EXPECTED TO BEGIN MOVING
SLOWLY BACK NORTH BY LATE FRIDAY INTO SATURDAY.  SCATTERED
THUNDERSTORMS WILL BE POSSIBLE OVER THE WEEKEND WITH THE POTENTIAL
FOR ADDITIONAL SEVERE WEATHER...ESPECIALLY ON SATURDAY.  DRY WEATHER
IS THEN EXPECTED THROUGH THE FIRST PART OF THE UPCOMING WEEK.

.SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED FOR SOUTHEASTERN OKLAHOMA AND
WEST CENTRAL ARKANSAS THIS AFTERNOON AND EVENING.

ADDITIONAL WEATHER INFORMATION CAN BE FOUND AT...
WWW.SRH.NOAA.GOV/TULSA

In the hours before

Local storm report, May 2, 5:26 PM CDT, 4 hours 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0526 PM CDT FRI MAY 02 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0730 PM    4 SW HARTFORD             AR   0.88 IN HAIL
05/01/03   SEBASTIAN                      REPORTED BY PUBLIC

0427 PM    2 NE SALINA               OK   0.88 IN HAIL
05/01/03   MAYES                          REPORTED BY PUBLIC

BAS
Special weather statement, May 2, 9:45 PM CDT, 0 minutes before
OKZ049-053-076-030700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
945 PM CDT FRI MAY 2 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
217 UNTIL 200 AM CDT SATURDAY MORNING FOR THE FOLLOWING AREAS:

IN OKLAHOMA THIS WATCH INCLUDES 3 COUNTIES...
IN SOUTHEAST OKLAHOMA:

CHOCTAW               LE FLORE              PUSHMATAHA

THIS INCLUDES THE CITIES OF ANTLERS...CLAYTON...HUGO AND POTEAU.

STRONG TO SEVERE THUNDERSTORMS HAVE DEVELOP THIS EVENING ALONG A
STATIONARY FRONT...LOCATED ACROSS FAR SOUTHEAST OKLAHOMA NEAR THE
RED RIVER.  THE SEVERE WEATHER THREAT WILL CONTINUE ACROSS THE WATCH
AREA FOR THE NEXT SEVERAL HOURS...BEFORE STORMS SHIFT SOUTHEAST.
LARGE HAIL WILL BE THE PRIMARILY THREAT WITH THESE SEVERE
STORMS.

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.