Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 296, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Dec 19, 2012, 8:54 PM CST for Haskell County, LeFlore County, Sequoyah County, Oklahoma. It was in force for 36 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, 8:54 PM CST (02:54 UTC)
- Expired
- Dec 19, 2012, 9:30 PM CST
- In force
- 36 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Haskell County, OK, LeFlore County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 28 km from the middle of the area, began a volume at 02:54 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 19, 9:06 PM CST | HAIL 1 | 4 N Muldrow, OK |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 19, 7:36 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 2.9 hours before the alert went out and 188 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.
- Mixed-layer CAPE
- 78 J/kg
- Mixed-layer CIN
- -223 J/kg
- Mixed-layer LCL
- 609 m above ground
- 0-6 km bulk shear
- 88 kt
- 0-1 km storm-relative helicity
- 442 m²/s²
- 0-3 km storm-relative helicity
- 455 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
395
WUUS54 KTSA 200254
SVRTSA
OKC061-079-135-200330-
/O.NEW.KTSA.SV.W.0296.121220T0254Z-121220T0330Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
854 PM CST WED DEC 19 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA
EASTERN HASKELL COUNTY IN SOUTHEAST OKLAHOMA
NORTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA
* UNTIL 930 PM CST
* AT 850 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTH OF KEOTA TO KEOTA TO 4 MILES SOUTHEAST
OF KEOTA...MOVING EAST AT 50 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
GANS...SPIRO...MULDROW...POCOLA...ROLAND...MOFFETT AND ARKOMA.
THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 311 AND 328.
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 3553 9446 3539 9444 3524 9444 3517 9491
3527 9493 3535 9497
TIME...MOT...LOC 0254Z 249DEG 43KT 3536 9487 3529 9483
3522 9483
$$2 follow-up statements
963
WWUS54 KTSA 200303
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
903 PM CST WED DEC 19 2012
OKC061-200314-
/O.CAN.KTSA.SV.W.0296.000000T0000Z-121220T0330Z/
HASKELL OK-
903 PM CST WED DEC 19 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN HASKELL COUNTY IS
CANCELLED...
LAT...LON 3520 9482 3531 9480 3540 9482 3553 9446
3539 9444 3524 9444
TIME...MOT...LOC 0304Z 238DEG 51KT 3543 9473 3536 9466
3524 9470
$$
OKC079-135-200330-
/O.CON.KTSA.SV.W.0296.000000T0000Z-121220T0330Z/
LE FLORE OK-SEQUOYAH OK-
903 PM CST WED DEC 19 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST FOR
SOUTHEASTERN SEQUOYAH AND NORTHEASTERN LE FLORE COUNTIES...
AT 901 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM GANS TO COWLINGTON...MOVING NORTHEAST AT 60 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SPIRO...
MULDROW...SCULLYVILLE...COTTONWOOD...ROLAND...BRADEN...MOFFETT AND
ARKOMA.
THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 311 AND 328.
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 3520 9482 3531 9480 3540 9482 3553 9446
3539 9444 3524 9444
TIME...MOT...LOC 0304Z 238DEG 51KT 3543 9473 3536 9466
3524 9470
$$340
WWUS54 KTSA 200315
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
915 PM CST WED DEC 19 2012
OKC079-135-200330-
/O.CON.KTSA.SV.W.0296.000000T0000Z-121220T0330Z/
LE FLORE OK-SEQUOYAH OK-
915 PM CST WED DEC 19 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CST FOR
SOUTHEASTERN SEQUOYAH AND NORTHEASTERN LE FLORE COUNTIES...
AT 911 PM CST...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTHWEST OF ROLAND TO ROLAND TO SPIRO...
MOVING NORTHEAST AT 60 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BRADEN...
MOFFETT AND ARKOMA.
THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 316 AND 328.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3521 9473 3547 9463 3553 9446 3539 9444
3524 9444
TIME...MOT...LOC 0315Z 238DEG 51KT 3552 9452 3544 9450
3528 9456
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 19, 7:28 PM CST | Special Weather Statement | TSA | Pittsburg | 32 min |
| Dec 19, 7:46 PM CST | Severe Thunderstorm Warning | TSA | Pittsburg | 44 min |
| Dec 19, 8:15 PM CST | Special Weather Statement | TSA | Latimer | 45 min |
| Dec 19, 8:20 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Muskogee, Pittsburg, Sequoyah | 40 min |
| Dec 19, 8:45 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Sequoyah | 45 min |
| Dec 19, 8:50 PM CST | Special Weather Statement | TSA | Latimer, LeFlore, Pushmataha | 55 min |
| Dec 19, 9:11 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 34 min |
| Dec 19, 9:23 PM CST | Special Weather Statement | TSA | Choctaw | 67 min |
| Dec 19, 9:34 PM CST | Special Weather Statement | TSA | LeFlore | 56 min |
| Dec 20, 1:09 PM CST | Wind Advisory | TSA | Adair | 4 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.