Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 247, NWS Tulsa, OK

April 25, 2008Choctaw County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 25, 2008, 2:43 PM CDT for Choctaw 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 counties it named.

The facts

Issued: Apr 25, 2008, 2:43 PM CDT (19:43 UTC)
Expired: Apr 25, 2008, 3:45 PM CDT
In force: 62 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

County Choctaw County, OK

The radar

The Western Arkansas radar (KSRX), 178 km from the middle of the area, began a volume at 19:46 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.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 7.7 hours before the alert went out and 209 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: 1802 J/kg
Mixed-layer CIN: -149 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 280 m²/s²
0-3 km storm-relative helicity: 387 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.2

Open this sounding in Storm Lab

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 Apr 25, 10:40 AM CDT, 4 hours 3 minutes earlier.

Area forecast discussion, Apr 25, 10:40 AM CDT, 4 hours 3 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Apr 25, 12:55 PM CDT, 1 hour 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
1255 PM CDT FRI APR 25 2008

ARZ001-002-010-011-019-020-029-OKZ049-053>076-261000-
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-
1255 PM CDT FRI APR 25 2008

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

.DAY ONE...TODAY AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...THIS AFTERNOON.

DISCUSSION...
EARLY THIS AFTERNOON A COLD FRONT WAS LOCATED ALONG A GROVE TO
MUSKOGEE TO MCALESTER TO DURANT LINE.  SO FAR CLOUD COVER HAS
LIMITED HEATING AND THUNDERSTORM DEVELOPMENT.  WITH A STRONG CAP
IN PLACE STRONG SURFACE HEATING WILL BE NECESSARY FOR SEVERE
THUNDERSTORM DEVELOPMENT.  AREAS ALONG AND TO THE EAST OF THE FRONT
MAY SEE SOME HEATING AND THUNDERSTORM DEVELOPMENT. IF A SURFACE
BASED THUNDERSTORM DEVELOPS...THERE WILL BE ENOUGH INSTABILITY FOR
LARGE HAIL AND DAMAGING WINDS TO BE A RISK.  GIVEN THE STRENGTH
OF THE CAP AND THE POSSIBLE LACK OF HEATING...THE SEVERE
THUNDERSTORM RISK IS LIMITED. THE COLD FRONT WILL BE TO THE EAST
OF THE AREA BY THIS EVENING BRINGING AN END TO THE THUNDERSTORM
RISK.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED ACROSS SOUTHEAST OKLAHOMA
AND NORTHWEST ARKANSAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.
SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY...NO HAZARDS.
TUESDAY...NO HAZARDS.
WEDNESDAY...NO HAZARDS.
THURSDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
ANOTHER COLD FRONT WILL MOVE THROUGH THE AREA SATURDAY NIGHT INTO
SUNDAY MORNING BRINGING ANOTHER CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGH PRESSURE BUILDING IN BEHIND THE FRONT WILL BRING DRY WEATHER
TO THE AREA EARLY NEXT WEEK.  MOISTURE RETURN ON THE BACK SIDE OF
THE HIGH PRESSURE WILL BRING THUNDERSTORM CHANCES BACK INTO THE
FORECAST THURSDAY.

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

In the hours before

Special weather statement, Apr 25, 1:10 PM CDT, 1 hour 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
110 PM CDT FRI APR 25 2008

ARZ001-010-019-OKZ063-068-069-072-251915-
ADAIR OK-BENTON AR-CHEROKEE OK-CRAWFORD AR-DELAWARE OK-SEQUOYAH
OK-WASHINGTON AR-
110 PM CDT FRI APR 25 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 215 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     WASHINGTON...WESTERN CRAWFORD AND BENTON

IN NORTHEAST OKLAHOMA
     SOUTHEASTERN DELAWARE AND ADAIR

IN EAST CENTRAL OKLAHOMA
     SOUTHEASTERN CHEROKEE AND SEQUOYAH

AT 110 PM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 3 MILES SOUTH OF GRAVETTE TO 4 MILES WEST OF
MCKEY...MOVING EAST AT 25 MPH.

A LARGE PORTION OF THE MENTIONED COUNTIES WILL BE AFFECTED BY THESE
STORMS THROUGH 215 PM CDT.

THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS
TO 50 MPH.

LAT...LON 3643 9386 3548 9428 3538 9490 3541 9492
      3541 9496 3545 9499 3650 9449 3649 9386
TIME...MOT...LOC 1810Z 256DEG 25KT 3639 9442 3549 9492

Special weather statement, Apr 25, 1:59 PM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
159 PM CDT FRI APR 25 2008

ARZ001-002-010-011-019-OKZ069-252000-
ADAIR OK-BENTON AR-CARROLL AR-CRAWFORD AR-MADISON AR-WASHINGTON AR-
159 PM CDT FRI APR 25 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 300 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHWEST ARKANSAS
     WASHINGTON...WESTERN CARROLL...NORTHERN CRAWFORD...EASTERN
     BENTON AND WESTERN MADISON

IN NORTHEAST OKLAHOMA
     SOUTHEASTERN ADAIR

AT 159 PM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 3 MILES WEST OF HILL TOP TO 12 MILES SOUTHWEST OF
ODELL...MOVING EAST AT 20 MPH.

A LARGE PORTION OF THE MENTIONED COUNTIES WILL BE AFFECTED BY THESE
STORMS THROUGH 300 PM CDT.

THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS
TO 50 MPH.

LAT...LON 3649 9343 3573 9393 3570 9399 3567 9399
      3567 9459 3648 9414
TIME...MOT...LOC 1859Z 266DEG 20KT 3646 9402 3565 9455

Special weather statement, Apr 25, 2:13 PM CDT, 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
213 PM CDT FRI APR 25 2008

OKZ049-053-251945-
CHOCTAW OK-PUSHMATAHA OK-
213 PM CDT FRI APR 25 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 245 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     CHOCTAW AND PUSHMATAHA

AT 212 PM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 2 MILES NORTH OF SARDIS TO 11 MILES WEST OF
BOSWELL...MOVING SOUTHEAST AT 30 MPH.

MUCH OF CHOCTAW AND PUSHMATAHA COUNTIES WILL BE AFFECTED BY THESE
STORMS.

THESE STORMS WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS
TO 50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

LAT...LON 3394 9596 3417 9597 3418 9580 3436 9581
      3460 9552 3469 9552 3469 9493 3448 9503
      3423 9509 3422 9512 3394 9519 3386 9547
      3393 9557 3387 9584
TIME...MOT...LOC 1912Z 307DEG 26KT 3468 9538 3404 9603

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 8:31 AM CDT	Special Weather Statement	TSA	Creek, Nowata, Tulsa, Washington	59 min
Apr 25, 9:52 AM CDT	River Flood Warning	TSA	Cherokee	4 hr
Apr 25, 1:10 PM CDT	Special Weather Statement	TSA	Adair, Sequoyah	65 min
Apr 25, 2:13 PM CDT	Special Weather Statement	TSA	Choctaw, Pushmataha	32 min
Apr 25, 2:54 PM CDT	Special Weather Statement	TSA	Pushmataha	51 min
Apr 25, 3:12 PM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	50 min
Apr 25, 3:40 PM CDT	Severe Thunderstorm Warning	TSA	Choctaw	55 min
Apr 25, 1:59 PM CDT	Special Weather Statement	TSA	Carroll, Washington	61 min
Apr 25, 2:55 PM CDT	Special Weather Statement	TSA	Carroll, Madison	65 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2008 Every severe thunderstorm warning in 2008

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.