Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 215, NWS Tulsa, OK

May 13, 2004LeFlore County, Oklahoma; Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 13, 2004, 6:30 PM CDT for LeFlore County, Oklahoma; Sebastian County, Arkansas. It was in force for 45 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 13, 2004, 6:30 PM CDT (23:30 UTC)
Expired: May 13, 2004, 7:15 PM CDT
In force: 45 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

Counties Sebastian County, AR, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 31 km from the middle of the area, began a volume at 23:29 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

Norman, OK (KOUN), launched 12:00Z, 11.5 hours before the alert went out and 269 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: 924 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 735 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 214 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.

889 
WUUS54 KTSA 132330
SVRTUL
ARC131-OKC079-140015-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
630 PM CDT THU MAY 13 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LE FLORE COUNTY IN SOUTHEAST OKLAHOMA
  SOUTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 715 PM CDT

* AT 630 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES EAST OF CAMERON...MOVING SOUTH AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...MUSE...
  HEAVENER...HOWE...CAMERON...HARTFORD AND MIDLAND.

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 3516 9431 3518 9457 3466 9478 3496 9430

$$

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 13, 6:15 PM CDT, 15 minutes earlier.

Area forecast discussion, May 13, 6:15 PM CDT, 15 minutes before

AREA FORECAST DISCUSSION...MESOSCALE UPDATE
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
615 PM CDT THU MAY 13 2004

CONVECTION IS RAPIDLY INCREASING OVER THE FORT SMITH AREA AND IS
PRODUCING WINDS TO NEAR SEVERE CRITERIA.  CAPES TO AROUND 2000 J/KG
PERSIST AHEAD OF THESE STORMS.  BOUNDARY INTERACTIONS WILL CONTINUE
TO PROVIDE THE LIFT TO INITIATE NEW UPDRAFTS.

FORECAST ID= 08

.TSA WATCHES/WARNINGS/ADVISORIES...
AR...FLASH FLOOD WATCH UNTIL 600 AM CDT FRIDAY FOR ZONES
ARZ001>002...ARZ010>011.

OK...FLASH FLOOD WATCH UNTIL 600 AM CDT FRIDAY FOR ZONES
OKZ054>058...OKZ061>063.

Hazardous weather outlook, May 13, 5:35 PM CDT, 55 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
535 PM CDT THU MAY 13 2004

ARZ001-002-010-011-019-020-029-OKZ049-053>076-140200-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
535 PM CDT THU MAY 13 2004

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...TODAY AND TONIGHT

...THERE IS A CHANCE OF SEVERE THUNDERSTORMS ACROSS EASTERN OKLAHOMA
AND WESTERN ARKANSAS THIS EVENING...

...THERE IS A CHANCE OF FLASH FLOODING IN PARTS OF NORTHEAST
OKLAHOMA AND NORTHWEST ARKANSAS...

AN AREA OF THUNDERSTORMS WILL TRACK ACROSS PARTS OF EAST-CENTRAL
OKLAHOMA AND WEST-CENTRAL ARKANSAS THIS EVENING.  WHILE WIND FIELDS
ALOFT ARE WEAK...ENOUGH INSTABILITY IS IN PLACE AHEAD OF THE STORMS
FOR A THREAT OF STRONG WINDS AND HAIL.  SOME STORM ROTATION IS ALSO
POSSIBLE NEAR WHERE STORM BOUNDARIES INTERSECT.

THE PRIMARY COLD FRONT WILL MOVE SLOWLY ACROSS THE REGION THIS
EVENING...REACHING A LINE FROM NEAR GROVE TO MUSKOGEE TO MCALESTER
BY 10PM.  A FEW ADDITIONAL STORMS MAY REFORM ALONG OR AHEAD OF THE
FRONT THIS EVENING...HOWEVER THE INSTABILITY SHOULD HAVE BEEN
REDUCED ENOUGH BY THE PREVIOUS STORMS TO LIMIT THE SEVERE WEATHER
POTENTIAL.

THE THREAT FOR SEVERE WEATHER SHOULD END BY 10 PM AS THE ATMOSPHERE
STABILIZES FURTHER AFTER SUNSET.  HOWEVER A FEW THUNDERSTORMS MAY
PERSIST AHEAD OF THE FRONT INTO THE NIGHT.

OVERALL RAINFALL RATES WILL DECREASE LATER THIS EVENING AS THE
STORMS DO...HOWEVER THE RAINFALL EFFICIENCY OF THE STORMS HAS BEEN
HIGH...SO EVEN A WEAK THUNDERSTORM COULD PRODUCE A FLASH FLOOD
THREAT.

SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTERS AND EMERGENCY MANAGERS IN THE AREA SHOULD CONTINUE TO
MONITOR THE SITUATION THIS EVENING AND BE READY FOR QUICK ACTIVATION
IF STORMS THREATEN YOU LOCAL AREA.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL TABULAR AND
GRAPHICAL INFORMATION

In the hours before

Special weather statement, May 13, 1:32 PM CDT, 4 hours 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
132 PM CDT THU MAY 13 2004

OKZ055-056-131930-
NOWATA OK-WASHINGTON OK-
132 PM CDT THU MAY 13 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 230 PM CDT
FOR THE FOLLOWING COUNTIES:

IN NORTHEAST OKLAHOMA
     WASHINGTON AND NOWATA

AT 132 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES
SOUTH OF DEWEY...MOVING NORTHEAST AT 30 MPH. SOME LOCATIONS THAT WILL
BE AFFECTED BY THIS STORM INCLUDE...DEWEY...COPAN...NOWATA...
DELAWARE...LENAPAH AND WANN.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

Special weather statement, May 13, 1:44 PM CDT, 4 hours 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
144 PM CDT THU MAY 13 2004

OKZ064-131930-
CREEK OK-
144 PM CDT THU MAY 13 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 230 PM CDT
FOR THE FOLLOWING COUNTY:

IN NORTHEAST OKLAHOMA
     CREEK

AT 144 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES
NORTH OF DEPEW...MOVING NORTHEAST AT 15 MPH. SOME LOCATIONS THAT WILL
BE AFFECTED BY THIS STORM INCLUDE...BRISTOW...DEPEW...SHAMROCK...
KELLYVILLE AND SAPULPA.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

Local storm report, May 13, 1:58 PM CDT, 4 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
158 PM CDT THU MAY 13 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0100 PM     HAIL             VINITA                  36.64N 95.15W
05/13/2004  0.75 INCH        CRAIG              OK   AMATEUR RADIO

&&

SFP

Local storm report, May 13, 2:36 PM CDT, 3 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
236 PM CDT THU MAY 13 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0209 PM     HAIL             2 S JAY                 36.39N 94.80W
05/13/2004  0.75 INCH        DELAWARE           OK   PARK/FOREST SRVC

&&

SFP

Local storm report, May 13, 3:10 PM CDT, 3 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
310 PM CDT THU MAY 13 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0309 PM     TSTM WND GST     OWASSO                  36.27N 95.85W
05/13/2004  60 MPH           TULSA              OK   AMATEUR RADIO

&&

SFP

Local storm report, May 13, 3:35 PM CDT, 2 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
335 PM CDT THU MAY 13 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0320 PM     HAIL             TULSA                   36.13N 95.92W
05/13/2004  0.75 INCH        TULSA              OK   TRAINED SPOTTER

            PENNY SIZE HAIL AT PINE AND US 169

&&

SFP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 11:14 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers	61 min
May 13, 12:25 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	65 min
May 13, 12:46 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	59 min
May 13, 1:50 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	40 min
May 13, 1:51 PM CDT	Severe Thunderstorm Warning	TSA	Creek	39 min
May 13, 2:08 PM CDT	Severe Thunderstorm Warning	TSA	Delaware	52 min
May 13, 2:43 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	47 min
May 13, 2:48 PM CDT	Flash Flood Warning	TSA	Delaware	4 hr
May 13, 2:49 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	41 min
May 13, 3:11 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	19 min
May 13, 3:16 PM CDT	Flash Flood Warning	TSA	Rogers, Tulsa	4 hr
May 13, 3:22 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	38 min
May 13, 3:31 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	44 min
May 13, 3:32 PM CDT	Tornado Warning	TSA	Creek, Tulsa	43 min
May 13, 3:41 PM CDT	Tornado Warning	TSA	Creek, Tulsa	34 min
May 13, 4:01 PM CDT	Flash Flood Warning	TSA	Wagoner	4 hr
May 13, 4:25 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	50 min
May 13, 4:35 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee	40 min
May 13, 4:42 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	48 min
May 13, 5:01 PM CDT	Flash Flood Warning	TSA	Cherokee	4 hr
May 13, 5:07 PM CDT	Severe Thunderstorm Warning	TSA	Haskell	53 min
May 13, 6:18 PM CDT	Severe Thunderstorm Warning	TSA	Crawford, Sebastian	42 min
May 13, 6:21 PM CDT	Severe Thunderstorm Warning	TSA	Franklin	39 min
May 13, 6:47 PM CDT	Flash Flood Warning	TSA	Franklin	3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2004 Severe Thunderstorm Warnings in Arkansas, 2004 Every severe thunderstorm warning in 2004

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.