Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 41, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 19, 2011, 4:55 PM CDT for Pushmataha County, Oklahoma. It was in force for 65 min. 2 reports 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
- Apr 19, 2011, 4:55 PM CDT (21:55 UTC)
- Expired
- Apr 19, 2011, 6:00 PM CDT
- In force
- 65 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Pushmataha County, OK
The radar
The Western Arkansas radar (KSRX), 120 km from the middle of the area, began a volume at 21:58 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 |
|---|---|---|---|
| Apr 19, 5:35 PM CDT | HAIL 1 | Nashoba, OK | |
| Apr 19, 5:57 PM CDT | HAIL 1.25 | Clayton, 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 |
|---|---|---|---|
| Apr 19, 2:16 PM CDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 9.9 hours before the alert went out and 213 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
- 2660 J/kg
- Mixed-layer CIN
- -211 J/kg
- Mixed-layer LCL
- 1094 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 558 m²/s²
- 0-3 km storm-relative helicity
- 577 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.5
The text
As transmitted, in the capitals the NWS used until 2016.
213
WFUS54 KTSA 192155
TORTSA
OKC127-192300-
/O.NEW.KTSA.TO.W.0041.110419T2155Z-110419T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
455 PM CDT TUE APR 19 2011
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
PUSHMATAHA COUNTY IN SOUTHEAST OKLAHOMA
* UNTIL 600 PM CDT
* AT 453 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 5 MILES NORTHEAST OF KOSOMA...MOVING EAST AT 25
MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW LEVEL ROTATION...A
TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
STANLEY...SNOW...CLAYTON...CLOUDY...TUSKAHOMA...NASHOBA...KIAMICHI
AND ALBION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING
BASEBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. IF YOU ARE
NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO UNDERGROUND
SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR.
MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL
SHELTER. AVOID WINDOWS!
&&
LAT...LON 3432 9563 3459 9557 3469 9503 3469 9502
3451 9501 3450 9504 3426 9503
TIME...MOT...LOC 2155Z 268DEG 23KT 3439 9552
$$4 follow-up statements
764
WWUS54 KTSA 192210
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
510 PM CDT TUE APR 19 2011
OKC127-192300-
/O.CON.KTSA.TO.W.0041.000000T0000Z-110419T2300Z/
PUSHMATAHA OK-
510 PM CDT TUE APR 19 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR PUSHMATAHA
COUNTY...
AT 507 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR SNOW...
MOVING EAST AT 30 MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW
LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.
IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING HAIL
UP TO BASEBALL SIZE.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CLOUDY...
CLAYTON...TUSKAHOMA...NASHOBA...KIAMICHI AND ALBION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
&&
LAT...LON 3426 9503 3431 9550 3437 9562 3447 9560
3462 9540 3469 9503 3469 9502 3451 9501
3450 9504
TIME...MOT...LOC 2210Z 256DEG 25KT 3443 9540
$$811
WWUS54 KTSA 192221
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
521 PM CDT TUE APR 19 2011
OKC127-192300-
/O.CON.KTSA.TO.W.0041.000000T0000Z-110419T2300Z/
PUSHMATAHA OK-
521 PM CDT TUE APR 19 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHEASTERN PUSHMATAHA COUNTY...
AT 516 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR SNOW...
MOVING EAST AT 30 MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW
LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.
IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING HAIL
UP TO BASEBALL SIZE.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
TUSKAHOMA...NASHOBA...KIAMICHI AND ALBION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
&&
LAT...LON 3436 9503 3439 9553 3447 9550 3462 9540
3469 9503 3469 9502 3451 9501 3450 9504
TIME...MOT...LOC 2221Z 256DEG 25KT 3445 9531
$$040
WWUS54 KTSA 192236 RRA
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
536 PM CDT TUE APR 19 2011
OKC127-192300-
/O.CON.KTSA.TO.W.0041.000000T0000Z-110419T2300Z/
PUSHMATAHA OK-
536 PM CDT TUE APR 19 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHEASTERN PUSHMATAHA COUNTY...
AT 534 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR NASHOBA...
MOVING EAST AT 30 MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW
LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.
IN ADDITION TO A TORNADO...THIS SEVERE THUNDERSTORM IS CAPABLE OF
PRODUCING HAIL UP TO BASEBALL SIZE.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...KIAMICHI
AND ALBION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
&&
LAT...LON 3436 9503 3444 9539 3464 9530 3469 9503
3469 9502 3451 9501 3450 9504
TIME...MOT...LOC 2235Z 256DEG 25KT 3446 9520
$$829
WWUS54 KTSA 192244
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
544 PM CDT TUE APR 19 2011
OKC127-192300-
/O.CON.KTSA.TO.W.0041.000000T0000Z-110419T2300Z/
PUSHMATAHA OK-
544 PM CDT TUE APR 19 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
NORTHEASTERN PUSHMATAHA COUNTY...
AT 539 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR NASHOBA...
MOVING EAST AT 30 MPH. THIS IS A DANGEROUS STORM WITH STRONG LOW
LEVEL ROTATION...A TORNADO IS OCCURRING OR COULD FORM AT ANY TIME.
IN ADDITION TO A TORNADO...THIS SEVERE THUNDERSTORM IS CAPAPBLE OF
PRODUCING HAIL UP TO BASEBALL SIZE.
THE WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED
COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
&&
LAT...LON 3444 9504 3444 9525 3459 9523 3468 9502
3451 9501 3450 9504
TIME...MOT...LOC 2244Z 256DEG 28KT 3449 9512
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 3:46 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg, Pushmataha | 59 min |
| Apr 19, 3:58 PM CDT | Tornado Warning | TSA | Pushmataha | 62 min |
| Apr 19, 4:12 PM CDT | Special Weather Statement | TSA | Sequoyah | 33 min |
| Apr 19, 5:01 PM CDT | Special Weather Statement | TSA | Choctaw | 59 min |
| Apr 19, 5:40 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pushmataha | 35 min |
| Apr 19, 5:51 PM CDT | Tornado Warning | TSA | LeFlore, Pushmataha | 54 min |
| Apr 19, 6:07 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 53 min |
| Apr 19, 6:44 PM CDT | Tornado Warning | TSA | LeFlore | 31 min |
Nearby
Tornado Warnings in Oklahoma, 2011Every tornado warning in 2011Tornadoes in 2011
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.