Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 3, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 27, 2011, 10:48 PM CST for Crawford County, Sebastian County, Arkansas; 4 counties in Oklahoma. It was in force for 42 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
- Feb 27, 2011, 10:48 PM CST (04:48 UTC)
- Expired
- Feb 27, 2011, 11:30 PM CST
- In force
- 42 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Crawford County, AR, Sebastian County, AR, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 22 km from the middle of the area, began a volume at 04:50 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 |
|---|---|---|---|
| Feb 27, 11:10 PM CST | TSTM WND GST 60 | Keota, 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 |
|---|---|---|---|
| Feb 27, 10:04 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 4.8 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
- 626 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 369 m²/s²
- 0-3 km storm-relative helicity
- 472 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 7.4
The text
As transmitted, in the capitals the NWS used until 2016.
699 WUUS54 KTSA 280448 SVRTSA ARC033-131-OKC061-077-079-135-280530- /O.NEW.KTSA.SV.W.0003.110228T0448Z-110228T0530Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1048 PM CST SUN FEB 27 2011 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA SOUTHWESTERN CRAWFORD COUNTY IN NORTHWEST ARKANSAS SOUTHERN HASKELL COUNTY IN SOUTHEAST OKLAHOMA NORTHERN LATIMER COUNTY IN SOUTHEAST OKLAHOMA NORTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS * UNTIL 1130 PM CST * AT 1046 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR KINTA... MOVING EAST AT 70 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... DAMAGING WIND GUSTS TO 70 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ALMA... ARKOMA...BARLING...BOKOSHE...FORT SMITH...GANS...KEOTA...KINTA... LAVACA...LEQUIRE...MCCURTAIN...MOFFETT...MULDROW...POCOLA... ROLAND...RUDY...SPIRO...STIGLER AND VAN BUREN. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH OF THIS STORM...BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS. TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3556 9418 3533 9408 3503 9524 3520 9532 TIME...MOT...LOC 0448Z 250DEG 63KT 3514 9518 $$
1 follow-up statement
026 WWUS54 KTSA 280504 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1104 PM CST SUN FEB 27 2011 OKC077-280514- /O.CAN.KTSA.SV.W.0003.000000T0000Z-110228T0530Z/ LATIMER OK- 1104 PM CST SUN FEB 27 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LATIMER COUNTY IS CANCELLED... LAT...LON 3533 9425 3512 9501 3528 9508 3551 9433 TIME...MOT...LOC 0504Z 250DEG 63KT 3524 9495 $$ ARC033-131-OKC061-079-135-280530- /O.CON.KTSA.SV.W.0003.000000T0000Z-110228T0530Z/ SEBASTIAN AR-CRAWFORD AR-SEQUOYAH OK-HASKELL OK-LE FLORE OK- 1104 PM CST SUN FEB 27 2011 ...SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1130 PM CST FOR NORTHERN LE FLORE...EASTERN HASKELL...SOUTHEASTERN SEQUOYAH... SOUTHWESTERN CRAWFORD AND NORTHWESTERN SEBASTIAN COUNTIES... AT 1101 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR KANIMA... MOVING EAST AT 70 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... DAMAGING WIND GUSTS TO 70 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...KEOTA... BOKOSHE...COWLINGTON...GANS...SPIRO...SCULLYVILLE...MULDROW... COTTONWOOD...BRADEN...ROLAND...ARKOMA...MOFFETT...MILL CREEK... DORA...VAN BUREN...BARLING AND FORT SMITH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY. PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3533 9425 3512 9501 3528 9508 3551 9433 TIME...MOT...LOC 0504Z 250DEG 63KT 3524 9495 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 10:39 PM CST | Severe Thunderstorm Warning | TSA | Washington | 51 min |
| Feb 27, 10:50 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin | 40 min |
| Feb 27, 11:00 PM CST | Severe Thunderstorm Warning | TSA | Benton, Washington | 30 min |
| Feb 27, 11:27 PM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Sebastian | 48 min |
| Feb 27, 11:28 PM CST | Severe Thunderstorm Warning | TSA | Benton, Carroll, Madison, Washington | 47 min |
| Feb 27, 11:37 PM CST | Areal Flood Advisory | TSA | Carroll, Madison, Washington | 113 min |
| Feb 28, 12:10 AM CST | Severe Thunderstorm Warning | TSA | Crawford, Franklin, Madison | 32 min |
| Feb 28, 12:23 AM CST | Special Weather Statement | TSA | Carroll | 37 min |
| Feb 27, 6:07 PM CST | Tornado Warning | TSA | Osage | 23 min |
| Feb 27, 6:23 PM CST | Tornado Warning | TSA | Osage | 12 min |
| Feb 27, 8:03 PM CST | Special Weather Statement | TSA | Osage | 42 min |
| Feb 27, 9:00 PM CST | Special Weather Statement | TSA | Nowata | 30 min |
| Feb 27, 9:48 PM CST | Special Weather Statement | TSA | Haskell, Latimer, Pittsburg | 27 min |
| Feb 27, 9:54 PM CST | Special Weather Statement | TSA | Muskogee | 36 min |
| Feb 27, 9:56 PM CST | Special Weather Statement | TSA | Adair | 34 min |
| Feb 27, 10:23 PM CST | Special Weather Statement | TSA | Cherokee | 37 min |
| Feb 27, 10:26 PM CST | Special Weather Statement | TSA | Haskell | 34 min |
| Feb 27, 10:35 PM CST | Special Weather Statement | TSA | Pushmataha | 25 min |
| Feb 27, 10:47 PM CST | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 28 min |
| Feb 27, 10:53 PM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 52 min |
| Feb 27, 11:38 PM CST | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 52 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2011Severe Thunderstorm Warnings in Arkansas, 2011Every severe thunderstorm warning 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.