Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 451, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 13, 2011, 1:31 PM CDT for LeFlore County, Sequoyah County, Oklahoma. It was in force for 44 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
- Jul 13, 2011, 1:31 PM CDT (18:31 UTC)
- Expired
- Jul 13, 2011, 2:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties LeFlore County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 29 km from the middle of the area, began a volume at 18:31 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 |
|---|---|---|---|
| Jul 13, 2:08 PM CDT | TSTM WND DMG | Pocola, OK | FEW HOMES WITH ROOF DAMAGE AND A BARN DAMAGED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 6.5 hours before the alert went out and 197 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
- 176 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 1064 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
262 WUUS54 KTSA 131831 SVRTSA OKC079-135-131915- /O.NEW.KTSA.SV.W.0451.110713T1831Z-110713T1915Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 131 PM CDT WED JUL 13 2011 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 215 PM CDT * AT 131 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST OF PANAMA...MOVING NORTHEAST AT 10 MPH. STORM HAZARDS INCLUDE... WIND GUSTS TO 60 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SPIRO AND POCOLA. 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 3540 9472 3523 9445 3512 9470 3521 9480 TIME...MOT...LOC 1832Z 223DEG 10KT 3522 9472 $$
2 follow-up statements
569 WWUS54 KTSA 131849 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 149 PM CDT WED JUL 13 2011 OKC079-135-131915- /O.CON.KTSA.SV.W.0451.000000T0000Z-110713T1915Z/ LE FLORE OK-SEQUOYAH OK- 149 PM CDT WED JUL 13 2011 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR SOUTHERN SEQUOYAH AND NORTHEASTERN LE FLORE COUNTIES... AT 147 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED NEAR COWLINGTON AND SCULLYVILLE...MOVING NORTHEAST AT 15 MPH. STORM HAZARDS INCLUDE... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE... COWLINGTON...SPIRO...SCULLYVILLE AND POCOLA. PRECAUTIONARY/PREPAREDNESS ACTIONS... PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3540 9472 3523 9445 3512 9470 3521 9480 TIME...MOT...LOC 1849Z 238DEG 11KT 3526 9473 3519 9457 $$
361 WWUS54 KTSA 131902 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 202 PM CDT WED JUL 13 2011 OKC079-135-131915- /O.CON.KTSA.SV.W.0451.000000T0000Z-110713T1915Z/ LE FLORE OK-SEQUOYAH OK- 202 PM CDT WED JUL 13 2011 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR SOUTHERN SEQUOYAH AND NORTHEASTERN LE FLORE COUNTIES... AT 200 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR SCULLYVILLE... MOVING EAST AT 15 MPH. STORM HAZARDS INCLUDE... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...POCOLA. 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 3537 9468 3523 9445 3512 9470 3521 9480 TIME...MOT...LOC 1903Z 248DEG 14KT 3524 9453 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 7:00 PM CDT | Special Weather Statement | TSA | McIntosh | 60 min |
| Jul 12, 7:35 PM CDT | Special Weather Statement | TSA | Muskogee | 40 min |
| Jul 12, 7:37 PM CDT | Special Weather Statement | TSA | McIntosh, Muskogee | 53 min |
| Jul 12, 8:02 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Muskogee, Sequoyah | 58 min |
| Jul 12, 8:15 PM CDT | Special Weather Statement | TSA | Cherokee | 45 min |
| Jul 12, 8:48 PM CDT | Special Weather Statement | TSA | Sequoyah | 57 min |
| Jul 12, 11:22 PM CDT | Special Weather Statement | TSA | Osage | 38 min |
| Jul 13, 5:24 AM CDT | Areal Flood Advisory | TSA | Osage | 3 hr |
| Jul 13, 1:28 PM CDT | Special Weather Statement | TSA | Sequoyah | 47 min |
| Jul 13, 2:06 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 39 min |
| Jul 13, 2:55 PM CDT | Special Weather Statement | TSA | Pittsburg | 35 min |
| Jul 13, 3:23 PM CDT | Special Weather Statement | TSA | Pittsburg | 37 min |
| Jul 13, 3:59 PM CDT | Excessive Heat Watch | TSA | Cherokee, Choctaw, Craig, Creek, Delaware, Haskell and 15 more | 60 hr |
| Jul 13, 4:21 PM CDT | Special Weather Statement | TSA | LeFlore | 24 min |
| Jul 13, 4:44 PM CDT | Special Weather Statement | TSA | Okfuskee | 31 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 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.