Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 148, NWS Tulsa, OK

May 9, 2003Osage County, Pawnee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 9, 2003, 8:31 PM CDT for Osage County, Pawnee County, Oklahoma. It was in force for 59 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 9, 2003, 8:31 PM CDT (01:31 UTC)
Expired
May 9, 2003, 9:30 PM CDT
In force
59 min
Issued by
NWS Tulsa, OK
Area
Counties, with a storm outline in the text

Counties Osage County, OK, Pawnee County, OK

The radar

The Vance AFB radar (KVNX), 110 km from the middle of the area, began a volume at 01:32 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 9, 4:45 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.5 hours before the alert went out and 138 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, Norman, OK at 00:00Z on 2003-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2823 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, Norman, OK at 00:00Z on 2003-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
2823 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1182 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 100131
SVRTUL
OKC113-117-100230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
830 PM CDT FRI MAY 9 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
  WESTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
  PAWNEE COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 930 PM CDT

* AT 830 PM CDT...DOPPLER RADAR INDICATED A DANGEROUS SEVERE
  THUNDERSTORM 22 MILES WEST OF PAWNEE...MOVING NORTHEAST AT 35 MPH.
  RADAR INDICATED SOME ROTATION WITH THIS STORM. PEOPLE NEAR ITS PATH
  SHOULD MOVE TO A SAFE PLACE NOW

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...  SHIDLER...
  FAIRFAX...BURBANK...FORAKER...PAWNEE...BLACKBURN...SKEDEE...
  CLEVELAND AND RALSTON.

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 70 MPH CAN BE EXPECTED 
IN THE WARNED AREA. IF YOU ARE IN OR NEAR THE PATH OF THIS 
STORM...TAKE COVER NOW

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

LAT...LON 3629 9735 3615 9722 3629 9644 3702 9650

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 9, 8:10 PM CDT, 21 minutes earlier.

Area forecast discussion, May 9, 8:10 PM CDT, 21 minutes before
MESOSCALE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
810 PM CDT FRI MAY 9 2003

A BOUNDARY WITH CONSDIERABLE CYCLONIC SHEAR WAS LIFTING NORTH FROM
WEST PORT TO NORTH OF STILLWATER.  THE SUPERCELL WEST OF STILLWATER
HAS BEEN INCREASING IN ORGANIZATION AS IT INTERSECTS THAT BOUNDARY.

THE BOUNDARY IS MOVING STEADILY NORTH AND COULD OUT PACE THE
SUPERCELL...SO THE LONGER-TERM EVOLUTION OF THIS STORM IS NOT CLEAR.

THE MESOCYCLONE WITH THIS CELL COULD ENTER WESTERN PAWNEE COUNTY
AROUND 830PM IF IT SURVIVES.

FORECAST ID= 08

.TSA...
AR...NONE.
OK...NONE.
Hazardous weather outlook, May 9, 1:00 PM CDT, 7 hours 31 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-101100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT FRI MAY 9 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

...SEVERE THUNDERSTORMS ARE LIKELY LATE THIS AFTERNOON THROUGH
   TONIGHT...

AN UPPER LEVEL SYSTEM APPROACHING THE WESTERN PLAINS WILL AID IN THE
CONTINUED DEVELOPMENT OF LOW PRESSURE OVER THE WESTERN PLAINS THIS
AFTERNOON AND TONIGHT.  IN RESPONSE TO THIS DEVELOPMENT A DRY LINE
WILL SHARPEN OVER WESTERN OKLAHOMA AND WESTERN TEXAS.  SCATTERED
THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE DRY LINE THIS
AFTERNOON AND SPREAD NORTHEAST INTO EASTERN OKLAHOMA LATE THIS
AFTERNOON OR EARLY THIS EVENING.  THE THUNDERSTORMS WOULD REACH
NORTHWEST ARKANSAS DURING THE MID TO LATE EVENING HOURS.

ANY STORMS THAT DEVELOP THIS AFTERNOON WILL LIKELY BECOME SEVERE DUE
TO VERY HIGH INSTABILITY AND FAVORABLE WIND FIELDS.  THERE IS THE
POTENTIAL FOR LONG LIVED SUPERCELLS...WITH THE POSSIBILITY OF VERY
LARGE HAIL AND TORNADOES.

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 UPPER LEVEL SYSTEM MOVING OUT INTO THE PLAINS TONIGHT AND
SATURDAY WILL PUSH A COLD FRONT ACROSS THE AREA.  A CHANCE OF
THUNDERSTORMS WILL CONTINUE INTO SATURDAY ALONG AND AHEAD OF THE
FRONT UNTIL THE FRONT CLEARS THE AREA DURING THE AFTERNOON.  DRY
WEATHER WILL THEN PREVAIL FOR A FEW DAYS TILL THE NEXT CHANCE OF
THUNDERSTORMS DEVELOPS BY TUESDAY.  THERE WILL ALSO BE A CONTINUED
CHANCE OF THUNDERSTORMS THROUGH WEDNESDAY AND THURSDAY OF NEXT WEEK.

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

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

In the hours before

Special weather statement, May 9, 4:37 PM CDT, 3 hours 54 minutes before
OKZ054>064-067>069-100337-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
437 PM CDT FRI MAY 9 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 321 UNTIL 1100
PM CDT FRIDAY EVENING FOR THE FOLLOWING AREAS:

IN OKLAHOMA THIS WATCH INCLUDES 14 COUNTIES...
IN EAST CENTRAL OKLAHOMA:

CHEROKEE

IN NORTHEAST OKLAHOMA:

ADAIR                 CRAIG                 CREEK
DELAWARE              MAYES                 NOWATA
OSAGE                 OTTAWA                PAWNEE
ROGERS                TULSA                 WAGONER
WASHINGTON

THIS INCLUDES THE CITIES OF BARTLESVILLE...BRISTOW...BROKEN ARROW...
CLAREMORE...JAY...MIAMI...NOWATA...PAWHUSKA...PAWNEE...PRYOR...SAND
SPRINGS...STILWELL...TAHLEQUAH...TULSA...VINITA AND WAGONER.
Local storm report, May 9, 6:40 PM CDT, 1 hour 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0640 PM CDT FRI MAY 09 2003

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

0622 PM    HALLETT                   OK   0.75 IN HAIL
05/09/03   PAWNEE

SP
Local storm report, May 9, 6:46 PM CDT, 1 hour 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0646 PM CDT FRI MAY 09 2003

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

0625 PM    2 NW OSAGE                OK   0.88 IN HAIL
05/09/03   OSAGE

SP
Local storm report, May 9, 6:48 PM CDT, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0648 PM CDT FRI MAY 09 2003

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

0625 PM    CLEVELAND                 OK   0.88 IN HAIL
05/09/03   PAWNEE

SP
Special weather statement, May 9, 7:53 PM CDT, 38 minutes before
OKZ064>066-100115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
753 PM CDT FRI MAY 9 2003

THE NATIONAL WEATHER SERVICE HAS CLEARED THE FOLLOWING AREAS
REMAINING IN TORNADO WATCH #320. NO AREAS REMAIN IN THE WATCH.

IN OKLAHOMA THIS WATCH INCLUDED 2 COUNTIES...
IN EAST CENTRAL OKLAHOMA:

OKFUSKEE

IN NORTHEAST OKLAHOMA:

OKMULGEE

THIS INCLUDES THE CITIES OF OKEMAH AND OKMULGEE.
Special weather statement, May 9, 8:10 PM CDT, 21 minutes before
OKZ054>064-067>069-100130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
810 PM CDT FRI MAY 9 2003

TORNADO WATCH #321 ISSUED BY THE NATIONAL WEATHER SERVICE
UNTIL 1100 PM CDT FRIDAY EVENING CONTINUES FOR THE FOLLOWING AREAS:

IN OKLAHOMA THIS WATCH INCLUDES 14 COUNTIES...
IN EAST CENTRAL OKLAHOMA:

CHEROKEE

IN NORTHEAST OKLAHOMA:

ADAIR                 CRAIG                 CREEK
DELAWARE              MAYES                 NOWATA
OSAGE                 OTTAWA                PAWNEE
ROGERS                TULSA                 WAGONER
WASHINGTON

THIS INCLUDES THE CITIES OF BARTLESVILLE...BRISTOW...BROKEN ARROW...
CLAREMORE...JAY...MIAMI...NOWATA...PAWHUSKA...PAWNEE...PRYOR...SAND
SPRINGS...STILWELL...TAHLEQUAH...TULSA...VINITA AND WAGONER.

The office that day

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

IssuedProductOfficeCountiesLasted
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
May 10, 4:41 PM CDTSevere Thunderstorm WarningTSALeFlore34 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.