Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 174, NWS Tulsa, OK

May 10, 2003LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 10, 2003, 4:41 PM CDT for LeFlore County, Oklahoma. It was in force for 34 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 10, 2003, 4:41 PM CDT (21:41 UTC)
Expired
May 10, 2003, 5:15 PM CDT
In force
34 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), 26 km from the middle of the area, began a volume at 21:41 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 10, 11:55 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.7 hours before the alert went out and 207 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, Springfield, MO at 12:00Z on 2003-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1867 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2003-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 296 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
1867 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
689 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
296 m²/s²
0-3 km storm-relative helicity
300 m²/s²
Significant tornado parameter
3.5
Supercell composite
12.5

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 102141
SVRTUL
OKC079-102215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
441 PM CDT SAT MAY 10 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 515 PM CDT

* AT 441 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2
  MILES SOUTH OF CAMERON...MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...POTEAU...
  CAMERON...PANAMA...SPIRO AND POCOLA.

HAIL TO THE SIZE OF NICKELS CAN BE EXPECTED IN THE WARNED AREA. STAY 
INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

LAT...LON 3526 9475 3493 9462 3501 9444 3534 9447

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 10, 3:42 PM CDT, 59 minutes earlier.

Area forecast discussion, May 10, 3:42 PM CDT, 59 minutes before
MESOSCALE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
342 PM CDT SAT MAY 10 2003

LARGE SEVERE STORM MOVING INTO CRAWFORD COUNTY ARKANSAS SHOULD HAVE
INCREASING WIND DAMAGE POTENTIAL TO ACCOMPNAY THE GIANT HAIL THAT
HAS BEEN OCCURRING.  RECENT RADAR IMAGES SHOW A DRY AIR CHANNEL
DEVELOPING INTO THE BACK SIDE OF THE REFLECTIVITY...INDICATING A
PROLONG DAMAGGING WIND EVENING MAY BE ABOUT TO START.

FORECAST ID=08

.TSA...
AR...NONE.
OK...NONE
Hazardous weather outlook, May 10, 1:00 PM CDT, 3 hours 41 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-111100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT SAT MAY 10 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

...NUMEROUS SEVERE THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND
   EVENING...

EARLY THIS AFTERNOON SEVERE THUNDERSTORMS WERE FORMING ALONG A WIND
SHIFT LINE FROM NEAR BARTLESVILLE TO JUST EAST OF OKLAHOMA CITY TO
WITCHITA FALLS.  THIS LINE WILL PROGRESS EASTWARD THIS AFTERNOON AND
EVENING AS A POWERFUL UPPER LEVEL SYSTEM LIFTS NORTHEAST OUT OF THE
DESERT SOUTHWEST INTO THE CENTRAL PLAINS.  THIS UPPER LEVEL SYSTEM
WILL DRIVE A COLD FRONT SOUTHEAST ACROSS THE AREA THIS EVENING
BRINGING AN END TO THE SEVERE WEATHER THREAT.

RICH MOISTURE...EXTREME INSTABILITY AND FAVORABLE WIND FIELDS WILL
LEAD TO SOME SUPERCELL THUNDERSTORMS WITH THE POTENTIAL TO PRODUCE
VERY LARGE HAIL AND TORNADOES.  A SQUALL LINE WILL EVENTUALLY EVOLVE
FROM THE INDIVIDUAL STORMS AND IT WILL HAVE THE POTENTIAL TO ALSO
PRODUCE STRONG DAMAGING WINDS.

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...SUNDAY THROUGH FRIDAY
COOLER AND DRIER CONDITIONS WILL KEEP THE WEATHER QUIET FOR SUNDAY
AND MONDAY BEFORE THE NEXT CHANCE OF THUNDERSTORMS RETURNS BY AROUND
TUESDAY.  MOISTURE WILL ONCE AGAIN BE ON THE INCREASE WITH WARMER
TEMPERATURES AND A CHANCE OF THUNDERSTORMS CONTINUING THROUGH AT
LEAST WEDNESDAY AND THURSDAY.

.SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION WILL LIKELY BE REQUIRED THIS AFTERNOON AND THIS
EVENING.  SPOTTERS AND EMERGENCY OFFICIALS SHOULD CONTINUE TO
MONITOR THE LATEST WEATHER CONDITIONS VERY CLOSELY TODAY.

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

In the hours before

Local storm report, May 10, 3:55 PM CDT, 46 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0355 PM CDT SAT MAY 10 2003

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

0355 PM    VAN BUREN                 AR   1.00 IN HAIL
05/10/03   CRAWFORD

SP
Special weather statement, May 10, 4:05 PM CDT, 36 minutes before
ARZ002-010>011-019>020-029-110200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
405 PM CDT SAT MAY 10 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH #342 UNTIL 900
PM CDT SATURDAY EVENING FOR THE FOLLOWING AREAS:

IN ARKANSAS THIS WATCH INCLUDES 6 COUNTIES...
IN NORTHWEST ARKANSAS:

CARROLL               CRAWFORD              MADISON
WASHINGTON

IN WEST CENTRAL ARKANSAS:

FRANKLIN              SEBASTIAN

THIS INCLUDES THE CITIES OF BERRYVILLE...CEDARVILLE...EUREKA
SPRINGS...FAYETTEVILLE...FORT SMITH...HUNTSVILLE...MOUNTAINBURG...
NATURAL DAM...OZARK...SPRINGDALE AND VAN BUREN.

THIS REPLACES TORNADO WATCH #338 THAT WAS IN EFFECT FOR THESE 6
COUNTIES UNTIL 700 PM.
Local storm report, May 10, 4:15 PM CDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0415 PM CDT SAT MAY 10 2003

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

0414 PM    FERN                      AR   1.75 IN HAIL
05/10/03   FRANKLIN

SP
Local storm report, May 10, 4:32 PM CDT, 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0432 PM CDT SAT MAY 10 2003

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

0426 PM    3 N MULBERRY              AR   1.00 IN HAIL
05/10/03   CRAWFORD

0428 PM    5 N OZARK                 AR   1.25 IN HAIL
05/10/03   FRANKLIN

0430 PM    JETHRO                    AR   1.00 IN HAIL
05/10/03   FRANKLIN

SP
Local storm report, May 10, 4:33 PM CDT, 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0433 PM CDT SAT MAY 10 2003

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

0433 PM    POCOLA                    OK   1.00 IN HAIL
05/10/03   LE FLORE

SP
Local storm report, May 10, 4:40 PM CDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0440 PM CDT SAT MAY 10 2003

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

0438 PM    FORT SMITH                AR   0.88 IN HAIL
05/10/03   SEBASTIAN

SP

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 9, 8:31 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee59 min
May 9, 10:02 PM CDTSevere Thunderstorm WarningTSAWashington43 min
May 9, 10:09 PM CDTSevere Thunderstorm WarningTSANowata66 min
May 9, 11:40 PM CDTTornado WarningTSACreek65 min
May 9, 11:47 PM CDTSevere Thunderstorm WarningTSACreek, Osage, Pawnee43 min
May 9, 11:54 PM CDTSevere Thunderstorm WarningTSATulsa51 min
May 10, 12:21 AM CDTTornado WarningTSACreek54 min
May 10, 12:34 AM CDTTornado WarningTSAOkmulgee, Tulsa56 min
May 10, 1:15 AM CDTTornado WarningTSACreek, Okmulgee, Tulsa45 min
May 10, 1:22 AM CDTTornado WarningTSAWagoner68 min
May 10, 2:29 AM CDTSevere Thunderstorm WarningTSAWagoner46 min
May 10, 2:42 AM CDTSevere Thunderstorm WarningTSAMayes48 min
May 10, 2:49 AM CDTSevere Thunderstorm WarningTSACherokee56 min
May 10, 12:38 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee52 min
May 10, 12:41 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee49 min
May 10, 1:18 PM CDTSevere Thunderstorm WarningTSAOkfuskee, Okmulgee42 min
May 10, 1:25 PM CDTSevere Thunderstorm WarningTSANowata, Rogers, Washington65 min
May 10, 1:35 PM CDTTornado WarningTSANowata, Rogers, Washington70 min
May 10, 1:52 PM CDTTornado WarningTSAMcIntosh, Pittsburg53 min
May 10, 2:01 PM CDTSevere Thunderstorm WarningTSACraig44 min
May 10, 2:25 PM CDTTornado WarningTSAHaskell, Muskogee65 min
May 10, 2:37 PM CDTSevere Thunderstorm WarningTSACraig53 min
May 10, 2:45 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg75 min
May 10, 2:59 PM CDTSevere Thunderstorm WarningTSASequoyah46 min
May 10, 3:03 PM CDTSevere Thunderstorm WarningTSAOttawa57 min
May 10, 3:14 PM CDTSevere Thunderstorm WarningTSARogers31 min
May 10, 3:22 PM CDTSevere Thunderstorm WarningTSAAdair38 min
May 10, 4:00 PM CDTSevere Thunderstorm WarningTSAOttawa60 min

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.