Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 294, NWS Tulsa, OK

December 19, 20124 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Dec 19, 2012, 8:20 PM CST for 4 counties in Oklahoma. It was in force for 40 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Dec 19, 2012, 8:20 PM CST (02:20 UTC)
Expired
Dec 19, 2012, 9:00 PM CST
In force
40 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

Counties Haskell County, OK, Muskogee County, OK, Pittsburg County, OK, Sequoyah County, OK

The radar

The Western Arkansas radar (KSRX), 72 km from the middle of the area, began a volume at 02:22 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.

What was reported inside it

TimeReportWhereRemark
Dec 19, 8:48 PM CSTTSTM WND DMGKeota, OKNUMEROUS LARGE LIMS DOWN ACROSS THE CITY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Dec 19, 7:36 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 2.3 hours before the alert went out and 204 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, Norman, OK at 00:00Z on 2012-12-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 7 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2012-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 square meters per square second.1939587897117136156Sfc1 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
7 J/kg
Mixed-layer CIN
-200 J/kg
Mixed-layer LCL
1443 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

874 
WUUS54 KTSA 200220
SVRTSA
OKC061-101-121-135-200300-
/O.NEW.KTSA.SV.W.0294.121220T0220Z-121220T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
820 PM CST WED DEC 19 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MUSKOGEE COUNTY IN EAST CENTRAL OKLAHOMA
  SOUTHWESTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA
  HASKELL COUNTY IN SOUTHEAST OKLAHOMA
  NORTHEASTERN PITTSBURG COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 900 PM CST

* AT 817 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 3 MILES WEST OF ENTERPRISE TO QUINTON TO 5 MILES
  SOUTHWEST OF QUINTON...MOVING NORTHEAST AT 55 MPH.

  STORM HAZARDS INCLUDE...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  KINTA...WHITEFIELD...BRIARTOWN...PORUM...STIGLER...TAMAHA...
  KEOTA...VIAN AND SALLISAW.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 290 AND 307.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3511 9543 3523 9550 3531 9537 3530 9535
      3533 9534 3557 9496 3546 9478 3532 9480
      3532 9482 3522 9482 3521 9492 3519 9493
      3503 9543 3503 9546
TIME...MOT...LOC 0220Z 239DEG 48KT 3525 9540 3516 9534
          3508 9537

$$
2 follow-up statements
068 
WWUS54 KTSA 200236
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
836 PM CST WED DEC 19 2012

OKC061-101-121-135-200300-
/O.CON.KTSA.SV.W.0294.000000T0000Z-121220T0300Z/
HASKELL OK-MUSKOGEE OK-PITTSBURG OK-SEQUOYAH OK-
836 PM CST WED DEC 19 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CST FOR
SOUTHWESTERN SEQUOYAH...NORTHEASTERN PITTSBURG...SOUTHEASTERN
MUSKOGEE AND HASKELL COUNTIES...

AT 835 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHWEST OF KANIMA TO STIGLER TO 7 MILES EAST
OF KINTA...MOVING NORTHEAST AT 55 MPH.

STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...KANIMA...
TAMAHA...VIAN...KEOTA...MC KEY AND SALLISAW.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 290 AND 307.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3503 9546 3511 9543 3524 9533 3538 9525
      3557 9496 3546 9478 3532 9480 3532 9482
      3522 9482 3521 9492 3519 9494 3503 9543
TIME...MOT...LOC 0237Z 239DEG 48KT 3537 9508 3526 9506
          3515 9510

$$
115 
WWUS54 KTSA 200252
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
852 PM CST WED DEC 19 2012

OKC101-121-200302-
/O.CAN.KTSA.SV.W.0294.000000T0000Z-121220T0300Z/
MUSKOGEE OK-PITTSBURG OK-
852 PM CST WED DEC 19 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PITTSBURG AND
SOUTHEASTERN MUSKOGEE COUNTIES IS CANCELLED...

LAT...LON 3519 9494 3514 9510 3526 9504 3534 9504
      3550 9506 3557 9496 3546 9478 3532 9480
      3532 9482 3522 9482 3521 9492
TIME...MOT...LOC 0252Z 239DEG 48KT 3547 9487 3536 9485
          3525 9489

$$

OKC061-135-200300-
/O.CON.KTSA.SV.W.0294.000000T0000Z-121220T0300Z/
HASKELL OK-SEQUOYAH OK-
852 PM CST WED DEC 19 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CST FOR
CENTRAL SEQUOYAH AND EASTERN HASKELL COUNTIES...

AT 848 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MC KEY TO KEOTA...MOVING NORTHEAST AT 55 MPH.

STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SALLISAW.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 292 AND 307.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3519 9494 3514 9510 3526 9504 3534 9504
      3550 9506 3557 9496 3546 9478 3532 9480
      3532 9482 3522 9482 3521 9492
TIME...MOT...LOC 0252Z 239DEG 48KT 3547 9487 3536 9485
          3525 9489

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 19, 7:28 PM CSTSpecial Weather StatementTSAPittsburg32 min
Dec 19, 7:46 PM CSTSevere Thunderstorm WarningTSAPittsburg44 min
Dec 19, 8:15 PM CSTSpecial Weather StatementTSALatimer45 min
Dec 19, 8:45 PM CSTSevere Thunderstorm WarningTSAHaskell, Sequoyah45 min
Dec 19, 8:50 PM CSTSpecial Weather StatementTSALatimer, LeFlore, Pushmataha55 min
Dec 19, 8:54 PM CSTSevere Thunderstorm WarningTSAHaskell, LeFlore, Sequoyah36 min
Dec 19, 9:11 PM CSTSevere Thunderstorm WarningTSALeFlore34 min
Dec 19, 9:23 PM CSTSpecial Weather StatementTSAChoctaw67 min
Dec 19, 9:34 PM CSTSpecial Weather StatementTSALeFlore56 min
Dec 20, 1:09 PM CSTWind AdvisoryTSAAdair4 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.