Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 126, NWS Tulsa, OK

May 6, 2003LeFlore County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 6, 2003, 8:00 PM CDT for LeFlore County, Oklahoma. It was in force for 75 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, 8:00 PM CDT (01:00 UTC)
Expired: May 6, 2003, 9:15 PM CDT
In force: 75 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), 73 km from the middle of the area, began a volume at 01:01 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.

Issued	Product	Office	Lasted
May 6, 3:05 PM CDT	Tornado Watch	SPC	6 hr
May 6, 6:55 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 1.0 hours before the alert went out and 236 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 16 J/kg
Mixed-layer CIN: -312 J/kg
Mixed-layer LCL: 1830 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 227 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 070100
SVRTUL
OKC079-070215-

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

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

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

* UNTIL 915 PM CDT

* AT 759 PM CDT...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
  A LINE EXTENDING FROM 5 MILES WEST OF TALIHINA TO 30 MILES
  SOUTHWEST OF TALIHINA...MOVING EAST AT 40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...POTEAU...
  OCTAVIA...BIG CEDAR...MUSE...WHITESBORO...TALIHINA...HEAVENER...
  FANSHAWE...HOWE...WISTER AND CAMERON.

HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 65 MPH CAN BE EXPECTED 
IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE 
STORM HAS PASSED.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

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 3451 9493 3468 9493 3469 9505 3486 9505
          3487 9499 3495 9499 3496 9492 3504 9492
          3515 9444 3455 9450 3451 9469

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, 7:29 PM CDT, 31 minutes earlier.

Area forecast discussion, May 6, 7:29 PM CDT, 31 minutes before

MESOSCALE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
729 PM CDT TUE MAY 6 2003

OUTFLOW BOUNDARY FROM CELLS IN CRAWFORD CO WILL MERGE WITH THE BOW
APPROACHING FORT SMITH AND VAN BUREN AND MAY RESULT IN ENHANCED
BOUNDARY LAYER ROTATION IN SEBASTIAN CO.  THIS WILL HAVE TO BE
MONITORED FOR BRIEF TORNADO POTENTIAL.

FORECAST ID= 08

.TSA...
AR...NONE.
OK...NONE.

Hazardous weather outlook, May 6, 1:00 PM CDT, 7 hours 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, 7:33 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0733 PM CDT TUE MAY 06 2003

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

0732 PM    POCOLA                    OK   0.75 IN HAIL
05/06/03   LE FLORE

SP

Local storm report, May 6, 7:38 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0738 PM CDT TUE MAY 06 2003

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

0737 PM    ROCK ISLAND               OK   0.75 IN HAIL
05/06/03   LE FLORE

SP

Local storm report, May 6, 7:44 PM CDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0744 PM CDT TUE MAY 06 2003

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

0743 PM    RYE HILL                  AR   0.75 IN HAIL
05/06/03   SEBASTIAN

SP

Local storm report, May 6, 7:47 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0747 PM CDT TUE MAY 06 2003

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

0741 PM    FORT SMITH                AR   0.75 IN HAIL
05/06/03   SEBASTIAN

0745 PM    BONANZA                   AR   1.00 IN HAIL
05/06/03   SEBASTIAN

0745 PM    HACKETT                   AR   1.00 IN HAIL
05/06/03   SEBASTIAN

SP

Local storm report, May 6, 7:49 PM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0749 PM CDT TUE MAY 06 2003

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

0748 PM    GREENWOOD                 AR   0.75 IN HAIL
05/06/03   SEBASTIAN

0749 PM    RYE HILL                  AR   1.00 IN HAIL
05/06/03   SEBASTIAN

SP

Local storm report, May 6, 7:57 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
0757 PM CDT TUE MAY 06 2003

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

0513 PM    INDIANOLA                 OK   0.88 IN HAIL
05/06/03   PITTSBURG

0520 PM    5 W EUFAULA               OK   0.88 IN HAIL
05/06/03   MCINTOSH

0531 PM    CROWDER                   OK   1.00 IN HAIL
05/06/03   PITTSBURG

SP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 7:18 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	57 min
May 6, 7:28 PM CDT	Severe Thunderstorm Warning	TSA	Latimer, Pushmataha	77 min
May 6, 8:45 PM CDT	Severe Thunderstorm Warning	TSA	Latimer	45 min
May 6, 9:10 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	80 min
May 6, 10:40 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	65 min
May 6, 11:03 PM CDT	Severe Thunderstorm Warning	TSA	Latimer	57 min
May 6, 11:44 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	61 min
May 7, 12:01 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	44 min
May 7, 12:28 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	62 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2003 Every 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.