Alert archive / Oklahoma / Special Weather Statements in 2013

Special Weather Statement, NWS Tulsa, OK

March 31, 2013LeFlore County, Oklahoma; Sebastian County, Arkansas

NWS Tulsa, OK issued this special weather statement at Mar 31, 2013, 5:44 AM CDT for LeFlore County, Oklahoma; Sebastian County, Arkansas. It was in force for 31 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: Mar 31, 2013, 5:44 AM CDT (10:44 UTC)
Expired: Mar 31, 2013, 6:15 AM CDT
In force: 31 min
Issued by: NWS Tulsa, OK

Counties Sebastian County, AR, LeFlore County, OK

The radar

The Western Arkansas radar (KSRX), 29 km from the middle of the area, began a volume at 10:46 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

Springfield, MO (KSGF), launched 00:00Z, 10.7 hours before the alert went out and 214 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: 453 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1112 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 31, 4:51 AM CDT, 53 minutes earlier.

Area forecast discussion, Mar 31, 4:51 AM CDT, 53 minutes before

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Hazardous weather outlook, Mar 31, 4:52 AM CDT, 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
452 AM CDT SUN MAR 31 2013

ARZ001-002-010-011-019-020-029-OKZ049-053>076-011000-
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-
452 AM CDT SUN MAR 31 2013

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...EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS.
	ONSET...ONGOING.

POOR VISIBILITY.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
A COMPLEX OF SHOWERS AND THUNDERSTORMS IS CURRENTLY MOVING ACROSS
NORTHEAST OKLAHOMA...AND WILL CONTINUE TO PROGRESS TO THE
EAST-SOUTHEAST THIS MORNING. GUSTY WINDS CAN BE EXPECTED ALONG THE
LEADING EDGE OF THE RAINFALL...WITH GUSTS UP TO 50 MPH POSSIBLE.

THUNDERSTORMS WILL ALSO CONTINUE TO GRADUALLY INCREASE ACROSS
SOUTHEAST OKLAHOMA THIS MORNING...AND POSSIBLE INTO WEST CENTRAL
ARKANSAS AFTER SUNRISE. A FEW OF THE STRONGER STORMS WILL BE CAPABLE
OF PRODUCING LARGE HAIL AND GUSTY WINDS. THE BEST CHANCES OF SEVERE
WEATHER WILL GENERALLY BE SOUTH OF A MCALESTER TO FORT SMITH LINE.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
LOCAL SPOTTER ACTIVATION MAY BE NEEDED.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.
MONDAY...THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
TUESDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
WEDNESDAY AND THURSDAY...THUNDERSTORM POTENTIAL.
FRIDAY...NO HAZARDS.
SATURDAY...VERY HIGH FIRE WEATHER POTENTIAL.

EXTENDED DISCUSSION...
A MUCH STRONGER COLD FRONT WILL MOVE THROUGH THE AREA ON
MONDAY...WITH SHOWER AND THUNDERSTORM CHANCES
INCREASING...ESPECIALLY BY MONDAY NIGHT. TUESDAY THROUGH THURSDAY
WILL COOL AND WET...WITH PERIODS OF SHOWERS AND THUNDERSTORMS AS AN
UPPER LEVEL LOW APPROACHES THE REGION. THIS SYSTEM WILL EVENTUALLY
MOVE EAST OF THE AREA LATE IN THE WEEK...WITH MORE SEASONAL WEATHER
EXPECTED.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Special weather statement, Mar 31, 3:27 AM CDT, 2 hours 17 minutes before

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Special weather statement, Mar 31, 3:43 AM CDT, 2 hours 1 minute before

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Special weather statement, Mar 31, 4:20 AM CDT, 1 hour 24 minutes before

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Special weather statement, Mar 31, 5:13 AM CDT, 31 minutes before

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Special weather statement, Mar 31, 5:17 AM CDT, 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
517 AM CDT SUN MAR 31 2013

OKZ073>075-311100-
HASKELL OK-LATIMER OK-PITTSBURG OK-
517 AM CDT SUN MAR 31 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 600 AM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     SOUTHWESTERN HASKELL...PITTSBURG AND LATIMER

AT 515 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM WHITEFIELD TO 8 MILES NORTH OF MCALESTER TO JUST
NORTHWEST OF SCIPIO...MOVING SOUTHEAST AT 30 MPH. LOCATIONS
IN PITTSBURG AND LATIMER COUNTIES WILL BE AFFECTED BY THESE STORMS.

THESE STORMS WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH.

LAT...LON 3512 9603 3509 9581 3513 9562 3529 9518
      3497 9492 3494 9500 3492 9500 3476 9528
      3473 9547 3477 9581 3507 9608
TIME...MOT...LOC 1015Z 310DEG 24KT 3522 9522 3506 9554
          3503 9574 3507 9597

Special weather statement, Mar 31, 5:44 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
544 AM CDT SUN MAR 31 2013

ARZ029-OKZ074>076-311115-
HASKELL OK-LATIMER OK-LE FLORE OK-SEBASTIAN AR-
544 AM CDT SUN MAR 31 2013

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 615 AM CDT
FOR THE FOLLOWING COUNTIES...

IN WEST CENTRAL ARKANSAS
     SOUTHERN SEBASTIAN

IN SOUTHEAST OKLAHOMA
     SOUTHEASTERN HASKELL...CENTRAL LE FLORE AND EASTERN LATIMER

AT 542 AM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM HUNTINGTON TO LEQUIRE...MOVING SOUTHEAST AT 30 MPH.

LOCATIONS IN EASTERN LATIMER...CENTRAL LE FLORE AND SOUTHERN
SEBASTIAN COUNTIES WILL BE AFFECTED BY THESE STORMS.

THESE STORMS WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL AND WIND
GUSTS TO 40 MPH.

LAT...LON 3513 9408 3514 9413 3510 9414 3507 9423
      3503 9422 3495 9436 3494 9441 3492 9444
      3471 9445 3469 9508 3521 9513 3520 9402
      3517 9402
TIME...MOT...LOC 1042Z 285DEG 26KT 3511 9428 3509 9513

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 7:13 PM CDT	Special Weather Statement	TSA	Tulsa	32 min
Mar 30, 7:40 PM CDT	Special Weather Statement	TSA	Okfuskee	35 min
Mar 30, 7:41 PM CDT	Special Weather Statement	TSA	Wagoner	34 min
Mar 30, 7:50 PM CDT	Special Weather Statement	TSA	Mayes	25 min
Mar 30, 7:57 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Rogers, Wagoner	63 min
Mar 30, 8:01 PM CDT	Special Weather Statement	TSA	Nowata	29 min
Mar 30, 8:24 PM CDT	Special Weather Statement	TSA	Rogers	36 min
Mar 30, 8:38 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers	52 min
Mar 30, 8:45 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Wagoner	60 min
Mar 30, 8:53 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa, Rogers	67 min
Mar 30, 9:10 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee, Wagoner	35 min
Mar 30, 9:19 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Ottawa	56 min
Mar 30, 9:21 PM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes, Rogers	54 min
Mar 30, 9:31 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Muskogee, Sequoyah, Wagoner	59 min
Mar 30, 9:33 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	57 min
Mar 30, 10:04 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes	56 min
Mar 30, 10:09 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Haskell, Muskogee, Sequoyah	66 min
Mar 30, 10:31 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	44 min
Mar 30, 10:41 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Muskogee, Sequoyah	64 min
Mar 30, 11:08 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Sequoyah	67 min
Mar 30, 11:19 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Sequoyah	41 min
Mar 30, 11:23 PM CDT	Special Weather Statement	TSA	Pushmataha	37 min
Mar 30, 11:38 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg, Pushmataha	67 min
Mar 30, 11:58 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, LeFlore, Sequoyah	62 min
Mar 31, 12:38 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	67 min
Mar 31, 3:27 AM CDT	Special Weather Statement	TSA	Osage	63 min
Mar 31, 3:43 AM CDT	Special Weather Statement	TSA	Osage, Pawnee, Washington	47 min
Mar 31, 4:20 AM CDT	Special Weather Statement	TSA	Craig, Creek, Nowata, Pawnee, Rogers, Tulsa and 1 more	55 min
Mar 31, 5:13 AM CDT	Special Weather Statement	TSA	Delaware, Mayes, Tulsa, Wagoner	47 min
Mar 31, 5:17 AM CDT	Special Weather Statement	TSA	Latimer, Pittsburg	43 min
Mar 31, 5:58 AM CDT	Special Weather Statement	TSA	Latimer, Pittsburg	47 min
Mar 31, 6:35 AM CDT	Special Weather Statement	TSA	Choctaw	40 min
Mar 31, 6:42 AM CDT	Special Weather Statement	TSA	Pushmataha	63 min
Mar 31, 7:01 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw	59 min
Mar 30, 9:42 PM CDT	Special Weather Statement	TSA	Carroll	33 min
Mar 30, 9:49 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison	56 min
Mar 30, 10:43 PM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison	32 min
Mar 31, 12:31 AM CDT	Special Weather Statement	TSA	Sebastian	29 min
Mar 31, 6:15 AM CDT	Special Weather Statement	TSA	Carroll, Madison, Washington	60 min

Nearby

Special Weather Statements in Oklahoma, 2013 Special Weather Statements in Arkansas, 2013 Every special weather statement in 2013

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.