Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 8, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 28, 2012, 11:31 PM CST for Craig County, Delaware County, Mayes County, Oklahoma. It was in force for 30 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 28, 2012, 11:31 PM CST (05:31 UTC)
- Expired
- Feb 29, 2012, 12:01 AM CST
- In force
- 30 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Craig County, OK, Delaware County, OK, Mayes County, OK
The radar
The Tulsa radar (KINX), 62 km from the middle of the area, began a volume at 05:33 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 28, 11:46 PM CST | TSTM WND GST 60 | 5 Sw Grove, 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 28, 8:10 PM CST | Tornado Watch | SPC | 5 hr |
| Feb 28, 10:30 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 5.5 hours before the alert went out and 117 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
- 75 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 595 m above ground
- 0-6 km bulk shear
- 76 kt
- 0-1 km storm-relative helicity
- 482 m²/s²
- 0-3 km storm-relative helicity
- 563 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
519 WUUS54 KTSA 290531 SVRTSA OKC035-041-097-290615- /O.NEW.KTSA.SV.W.0008.120229T0531Z-120229T0615Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 1131 PM CST TUE FEB 28 2012 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA NORTHWESTERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA NORTHEASTERN MAYES COUNTY IN NORTHEAST OKLAHOMA * UNTIL 1215 AM CST * AT 1129 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR ADAIR... MOVING EAST AT 35 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... PENSACOLA...SPAVINAW STATE PARK...SPAVINAW...LANGLEY...CHEROKEE STATE PARK...DISNEY...KETCHUM...CHLOETA...CLEORA...BERNICE... BERNICE STATE PARK AND JAY. 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 3667 9489 3641 9472 3637 9527 3644 9531 TIME...MOT...LOC 0531Z 256DEG 32KT 3643 9525 $$
3 follow-up statements
215 WWUS54 KTSA 290544 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1144 PM CST TUE FEB 28 2012 OKC035-041-097-290615- /O.CON.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/ CRAIG OK-DELAWARE OK-MAYES OK- 1144 PM CST TUE FEB 28 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CST FOR NORTHEASTERN MAYES...NORTHWESTERN DELAWARE AND SOUTHEASTERN CRAIG COUNTIES... AT 1142 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR LANGLEY... MOVING EAST AT 35 MPH. STORM HAZARDS INCLUDE... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LANGLEY... CHEROKEE STATE PARK...DISNEY LITTLE BLUE STATE PARK...DISNEY... KETCHUM...CHLOETA...CLEORA...BERNICE...BERNICE STATE PARK...ZENA AND JAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY. PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3641 9508 3650 9512 3667 9489 3641 9472 TIME...MOT...LOC 0544Z 256DEG 32KT 3646 9506 $$
179 WWUS54 KTSA 290554 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1154 PM CST TUE FEB 28 2012 OKC035-097-290604- /O.CAN.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/ CRAIG OK-MAYES OK- 1154 PM CST TUE FEB 28 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MAYES AND SOUTHEASTERN CRAIG COUNTIES IS CANCELLED... LAT...LON 3641 9472 3641 9500 3655 9501 3667 9489 TIME...MOT...LOC 0554Z 256DEG 32KT 3652 9484 $$ OKC041-290615- /O.CON.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/ DELAWARE OK- 1154 PM CST TUE FEB 28 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM CST FOR NORTHWESTERN DELAWARE COUNTY... AT 1150 PM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR ZENA...MOVING EAST AT 35 MPH. STORM HAZARDS INCLUDE... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...JAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY. PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3641 9472 3641 9500 3655 9501 3667 9489 TIME...MOT...LOC 0554Z 256DEG 32KT 3652 9484 $$
096 WWUS54 KTSA 290601 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1201 AM CST WED FEB 29 2012 OKC041-290611- /O.CAN.KTSA.SV.W.0008.000000T0000Z-120229T0615Z/ DELAWARE OK- 1201 AM CST WED FEB 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DELAWARE COUNTY IS CANCELLED... THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA AND WEAKENED BELOW SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. LAT...LON 3641 9472 3641 9500 3655 9501 3667 9489 TIME...MOT...LOC 0601Z 256DEG 32KT 3653 9476 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 9:01 PM CST | Severe Thunderstorm Warning | TSA | Osage | 44 min |
| Feb 28, 9:41 PM CST | Severe Thunderstorm Warning | TSA | Nowata, Osage, Pawnee, Washington | 64 min |
| Feb 28, 10:15 PM CST | Special Weather Statement | TSA | Creek, Tulsa | 30 min |
| Feb 28, 10:31 PM CST | Special Weather Statement | TSA | Creek, Okmulgee, Tulsa | 29 min |
| Feb 28, 10:47 PM CST | Severe Thunderstorm Warning | TSA | Craig, Nowata, Ottawa, Washington | 58 min |
| Feb 28, 10:57 PM CST | Severe Thunderstorm Warning | TSA | Mayes, Rogers, Tulsa, Wagoner | 48 min |
| Feb 28, 11:44 PM CST | Severe Thunderstorm Warning | TSA | Ottawa | 20 min |
| Feb 28, 11:48 PM CST | Special Weather Statement | TSA | Wagoner | 27 min |
| Feb 28, 11:53 PM CST | Severe Thunderstorm Warning | TSA | Delaware | 52 min |
| Feb 28, 11:57 PM CST | Severe Thunderstorm Warning | TSA | Cherokee, Muskogee, Wagoner | 48 min |
| Feb 29, 12:28 AM CST | Special Weather Statement | TSA | Pittsburg | 32 min |
| Feb 29, 12:36 AM CST | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 39 min |
| Feb 29, 12:58 AM CST | Special Weather Statement | TSA | Latimer | 32 min |
| Feb 29, 4:14 AM CST | Fire Weather Watch | TSA | Craig, Creek, Delaware, Mayes, Nowata, Okfuskee and 7 more | 23 hr |
| Feb 29, 4:14 AM CST | Red Flag Warning | TSA | Craig, Nowata, Ottawa | 14 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.