Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 110, NWS Tulsa, OK

May 6, 2003Adair County, Cherokee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 6, 2003, 5:13 PM CDT for Adair County, Cherokee County, Oklahoma. It was in force for 62 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 6, 2003, 5:13 PM CDT (22:13 UTC)
Expired
May 6, 2003, 6:15 PM CDT
In force
62 min
Issued by
NWS Tulsa, OK
Area
Counties, with a storm outline in the text

Counties Adair County, OK, Cherokee County, OK

The radar

The Western Arkansas radar (KSRX), 65 km from the middle of the area, began a volume at 22:13 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 6, 11:40 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 10.2 hours before the alert went out and 154 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 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 34 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 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
34 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
1877 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 062213
SVRTUL
OKC001-021-062315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
512 PM CDT TUE MAY 6 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHEROKEE COUNTY IN EAST CENTRAL OKLAHOMA
  ADAIR COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 615 PM CDT

* AT 512 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
  A LINE EXTENDING FROM 10 MILES EAST OF BUNCH TO 6 MILES WEST OF
  COOKSON...MOVING NORTHEAST AT 35 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...STILWELL...
  BUNCH...BARON...CHRISTIE...TAHLEQUAH...COOKSON...HULBERT AND ELDON.

HAIL TO THE SIZE OF QUARTERS 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 3561 9456 3568 9512 3594 9517 3596 9452

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 6, 4:42 PM CDT, 31 minutes earlier.

Area forecast discussion, May 6, 4:42 PM CDT, 31 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
442 PM CDT TUE MAY 6 2003

AT 4PM THE THE DRY LINE EXTENDED FROM NEAR SOUTH COFFEYVILLE TO
OKMULGEE TO JUST WEST OF ARDMORE.  BY 7PM THE DRY LINE WILL EXTEND
FROM NEAR JOPLIN TO 40 MILES WEST OF DURANT.

STRONG MOISTURE CONVERGENCE IN SOUTHEAST OKLAHOMA HAS FORCED
MULTIPLE CELLS TO DEVELOP...THE MOISTURE CONVERGENCE MAY RELAX
DURING THE NEXT HOUR OR SO AND ALLOW MORE CELL SEPARATION.  MORE
DISCRETE CELLS ARE OCCURRING IN NORTHEAST OKLAHOMA WERE THE MOISTURE
CONVERGENCE HAS NOT BEEN AS GREAT.

THE AXIS OF GREATEST LOW-LEVEL STORM-RELATIVE HELICITY EXISTS FROM
MUSKOGEE COUNTY NORTHEAST INTO THE NORTHWEST CORNER OF ARKANSAS.
OVER THE NEXT FEW HOURS THE GREATEST TORNADO THREAT WILL LIKELY BE
ALONG THIS AXIS.

FORECAST ID= 08

.TSA...
AR...NONE.
OK...NONE.
Hazardous weather outlook, May 6, 1:00 PM CDT, 4 hours 13 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-071100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT TUE MAY 6 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 WEATHER OUTBREAK EXPECTED THIS AFTERNOON AND EVENING
   ACROSS PORTIONS OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...

SURFACE LOW PRESSURE WAS LOCATED OVER NORTH-CENTRAL OKLAHOMA EARLY
THIS AFTERNOON WITH A DRY LINE EXTENDING SOUTHWEST INTO SOUTHWEST
OKLAHOMA.  THUNDERSTORMS WILL LIKELY DEVELOP ALONG THE DRY LINE BY
MID AFTERNOON ACROSS EASTERN OKLAHOMA...RAPIDLY BECOMING SEVERE.
SUPERCELL THUNDERSTORMS ARE EXPECTED WITH HAIL UP TO THE SIZE OF
BASEBALLS...DAMAGING DOWNBURST WINDS TO 70 MPH AND A FEW TORNADOES.
THE GREATEST TORNADO THREAT THROUGH THIS EVENING WILL BE ACROSS FAR
NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS...NORTH OF A
BARTLESVILLE...FORT SMITH LINE.

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...WEDNESDAY THROUGH MONDAY
AN ACTIVE SPRING WEATHER PATTERN WILL CONTINUE INTO THE WEEKEND AS A
SERIES OF DISTURBANCES MOVES ACROSS THE SOUTHERN PLAINS AND A
SURFACE BOUNDARY REMAINS OVER THE AREA. IT APPEARS THE BEST CHANCES
OF SEVERE WEATHER WILL OCCUR WEDNESDAY NIGHT AND THURSDAY...AND
AGAIN ON SATURDAY. A MORE STABLE PATTERN MAY FINALLY TAKE OVER BY
EARLY NEXT WEEK.

.SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION WILL BE REQUIRED THIS AFTERNOON.   A TORNADO
WATCH IS IN EFFECT FOR PORTIONS OF NORTHEAST OKLAHOMA AND NORTHWEST
ARKANSAS UNTIL 700 PM.  EMERGENCY MANAGEMENT PERSONNEL SHOULD
CONTINUE TO CLOSELY MONITOR THE LATEST WEATHER CONDITIONS...AS
WARNINGS WILL LIKELY BE ISSUED LATER THIS AFTERNOON.

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

In the hours before

Local storm report, May 6, 4:29 PM CDT, 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0429 PM CDT TUE MAY 06 2003

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

0425 PM    BOYNTON                   OK   1.00 IN HAIL
05/06/03   MUSKOGEE

SP
Local storm report, May 6, 4:42 PM CDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0442 PM CDT TUE MAY 06 2003

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

0441 PM    PRYOR                     OK   0.88 IN HAIL
05/06/03   MAYES

SP
Local storm report, May 6, 4:49 PM CDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0449 PM CDT TUE MAY 06 2003

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

0447 PM    PRYOR                     OK   1.00 IN HAIL
05/06/03   MAYES

SP
Local storm report, May 6, 5:00 PM CDT, 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0500 PM CDT TUE MAY 06 2003

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

0459 PM    3 N KETCHUM               OK   1.00 IN HAIL
05/06/03   CRAIG

SP
Local storm report, May 6, 5:07 PM CDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0507 PM CDT TUE MAY 06 2003

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

0505 PM    VINITA                    OK   1.00 IN HAIL
05/06/03   CRAIG

SP
Local storm report, May 6, 5:09 PM CDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0509 PM CDT TUE MAY 06 2003

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

0505 PM    CLEORA                    OK   1.00 IN HAIL
05/06/03   DELAWARE

0505 PM    BERNICE                   OK   1.00 IN HAIL
05/06/03   DELAWARE

SP

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 3:30 PM CDTSevere Thunderstorm WarningTSAOkmulgee45 min
May 6, 3:50 PM CDTSevere Thunderstorm WarningTSAMcIntosh55 min
May 6, 3:53 PM CDTSevere Thunderstorm WarningTSAWagoner52 min
May 6, 4:05 PM CDTSevere Thunderstorm WarningTSAMuskogee70 min
May 6, 4:18 PM CDTSevere Thunderstorm WarningTSAMcIntosh, Pittsburg87 min
May 6, 4:19 PM CDTSevere Thunderstorm WarningTSAMayes, Rogers56 min
May 6, 4:39 PM CDTTornado WarningTSAMuskogee66 min
May 6, 4:47 PM CDTSevere Thunderstorm WarningTSADelaware, Ottawa58 min
May 6, 4:56 PM CDTSevere Thunderstorm WarningTSACraig64 min
May 6, 5:10 PM CDTSevere Thunderstorm WarningTSASequoyah50 min
May 6, 5:15 PM CDTSevere Thunderstorm WarningTSAMayes45 min
May 6, 5:23 PM CDTTornado WarningTSASequoyah52 min
May 6, 5:39 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, Muskogee, Pittsburg81 min
May 6, 6:02 PM CDTSevere Thunderstorm WarningTSAPushmataha88 min
May 6, 6:13 PM CDTSevere Thunderstorm WarningTSASequoyah77 min
May 6, 6:19 PM CDTSevere Thunderstorm WarningTSAAdair41 min
May 6, 6:26 PM CDTTornado WarningTSAAdair34 min
May 6, 6:48 PM CDTSevere Thunderstorm WarningTSALeFlore72 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.