Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 56, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 29, 2012, 2:43 AM CDT for Creek County, Osage County, Pawnee County, Oklahoma. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 29, 2012, 2:43 AM CDT (07:43 UTC)
- Expired
- Apr 29, 2012, 3:15 AM CDT
- In force
- 32 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Creek County, OK, Osage County, OK, Pawnee County, OK
The radar
The Tulsa radar (KINX), 73 km from the middle of the area, began a volume at 07:43 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.
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 28, 11:52 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 7.7 hours before the alert went out and 107 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
- 167 J/kg
- Mixed-layer CIN
- -203 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 228 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
The text
As transmitted, in the capitals the NWS used until 2016.
760 WUUS54 KTSA 290743 SVRTSA OKC037-113-117-290815- /O.NEW.KTSA.SV.W.0056.120429T0743Z-120429T0815Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 243 AM CDT SUN APR 29 2012 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CREEK COUNTY IN NORTHEAST OKLAHOMA SOUTHERN OSAGE COUNTY IN NORTHEAST OKLAHOMA PAWNEE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 315 AM CDT * AT 239 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 3 MILES SOUTHWEST OF TERLTON...MOVING NORTHEAST AT 45 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...OSAGE... WESTPORT AND WALNUT CREEK STATE PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3645 9630 3627 9612 3612 9651 3620 9656 TIME...MOT...LOC 0743Z 237DEG 38KT 3617 9647 $$
2 follow-up statements
073 WWUS54 KTSA 290757 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 257 AM CDT SUN APR 29 2012 OKC037-117-290807- /O.CAN.KTSA.SV.W.0056.000000T0000Z-120429T0815Z/ CREEK OK-PAWNEE OK- 257 AM CDT SUN APR 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR PAWNEE AND NORTHERN CREEK COUNTIES IS CANCELLED... LAT...LON 3623 9633 3630 9640 3645 9630 3627 9612 TIME...MOT...LOC 0757Z 230DEG 40KT 3628 9633 $$ OKC113-290815- /O.CON.KTSA.SV.W.0056.000000T0000Z-120429T0815Z/ OSAGE OK- 257 AM CDT SUN APR 29 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT FOR SOUTHERN OSAGE COUNTY... AT 256 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WALNUT CREEK STATE PARK...MOVING NORTHEAST AT 45 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... THIS STORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3623 9633 3630 9640 3645 9630 3627 9612 TIME...MOT...LOC 0757Z 230DEG 40KT 3628 9633 $$
845 WWUS54 KTSA 290814 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 314 AM CDT SUN APR 29 2012 OKC113-290822- /O.EXP.KTSA.SV.W.0056.000000T0000Z-120429T0815Z/ OSAGE OK- 314 AM CDT SUN APR 29 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN OSAGE COUNTY EXPIRES AT 315 AM CDT... THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA AND WEAKENED BELOW SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. GUSTY WINDS...SMALL HAIL AND HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS STORM. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 5 AM! LAT...LON 3623 9633 3630 9640 3645 9630 3627 9612 TIME...MOT...LOC 0812Z 230DEG 40KT 3639 9617 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 29, 12:13 AM CDT | Special Weather Statement | TSA | Creek | 47 min |
| Apr 29, 1:00 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 45 min |
| Apr 29, 1:43 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Pawnee | 30 min |
| Apr 29, 1:47 AM CDT | Special Weather Statement | TSA | Pawnee | 43 min |
| Apr 29, 2:16 AM CDT | Special Weather Statement | TSA | Pawnee | 29 min |
| Apr 29, 2:35 AM CDT | Special Weather Statement | TSA | Pawnee | 40 min |
| Apr 29, 3:12 AM CDT | Special Weather Statement | TSA | Washington | 33 min |
| Apr 29, 4:17 AM CDT | Special Weather Statement | TSA | Osage, Washington | 43 min |
| Apr 29, 4:29 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Tulsa, Washington | 46 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.