Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 2, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Feb 27, 2011, 6:23 PM CST for Osage County, Oklahoma. It was in force for 12 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
- Feb 27, 2011, 6:23 PM CST (00:23 UTC)
- Expired
- Feb 27, 2011, 6:35 PM CST
- In force
- 12 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Osage County, OK
The radar
The Wichita radar (KICT), 106 km from the middle of the area, began a volume at 00:23 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 |
|---|---|---|---|
| Feb 27, 2:46 PM CST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 0.4 hours before the alert went out and 88 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
- 914 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 1738 m above ground
- 0-6 km bulk shear
- 83 kt
- 0-1 km storm-relative helicity
- 190 m²/s²
- 0-3 km storm-relative helicity
- 255 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
507
WFUS54 KTSA 280023
TORTSA
OKC113-280045-
/O.NEW.KTSA.TO.W.0002.110228T0023Z-110228T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
623 PM CST SUN FEB 27 2011
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
NORTHERN OSAGE COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 645 PM CST
* AT 620 PM CST...A TORNADO WAS LOCATED 5 MILES NORTHEAST OF
GRAINOLA NEAR THE KANSAS STATE LINE...MOVING EAST-NORTEAST
AT 50 MPH. A TORNADO WAS REPORTED BY MEDIA CHASERS.
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
AREAS NORTHEAST OF GRAINOLA.
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 3700 9650 3700 9638 3698 9637 3690 9675
3691 9676 3696 9676 3699 9675 3700 9674
3700 9651
TIME...MOT...LOC 0022Z 259DEG 57KT 3701 9656
$$2 follow-up statements
777 WWUS54 KTSA 280027 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 627 PM CST SUN FEB 27 2011 OKC113-280045- /O.CON.KTSA.TO.W.0002.000000T0000Z-110228T0045Z/ OSAGE OK- 627 PM CST SUN FEB 27 2011 ...TORNADO WARNING CONTINUES UNTIL 645 PM CST FOR NORTHERN OSAGE COUNTY... AT 625 PM CST...NWS METEOROLOGISTS AND STORM SPOTTERS CONTINUED TO TRACK A TORNADO LOCATED NEAR THE KANSAS STATE LINE TO THE NORTHEAST OF GRAINOLA..MOVING EAST-NORTHEAST AT 50 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS! && LAT...LON 3698 9637 3693 9660 3700 9665 3700 9651 TIME...MOT...LOC 0026Z 256DEG 36KT 3702 9652 $$
452 WWUS54 KTSA 280035 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 635 PM CST SUN FEB 27 2011 OKC113-280045- /O.CAN.KTSA.TO.W.0002.000000T0000Z-110228T0045Z/ OSAGE OK- 635 PM CST SUN FEB 27 2011 ...THE TORNADO WARNING FOR NORTHERN OSAGE COUNTY IS CANCELLED... THE TORNADO PRODUCING STORM HAS MOVED NORTHEAST INTO KANSAS. LAT...LON 3698 9637 3693 9660 3700 9665 3700 9651 TIME...MOT...LOC 0035Z 259DEG 57KT 3704 9631 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 27, 6:07 PM CST | Tornado Warning | TSA | Osage | 23 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, 10:39 PM CST | Severe Thunderstorm Warning | TSA | Adair | 51 min |
| Feb 27, 10:47 PM CST | Severe Thunderstorm Warning | TSA | Adair, Cherokee | 28 min |
| Feb 27, 10:48 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Latimer, LeFlore, Sequoyah | 42 min |
| Feb 27, 10:50 PM CST | Severe Thunderstorm Warning | TSA | Haskell, Muskogee, Sequoyah | 40 min |
| Feb 27, 10:53 PM CST | Severe Thunderstorm Warning | TSA | Choctaw, Pushmataha | 52 min |
| Feb 27, 11:00 PM CST | Severe Thunderstorm Warning | TSA | Adair | 30 min |
| Feb 27, 11:27 PM CST | Severe Thunderstorm Warning | TSA | LeFlore, Sequoyah | 48 min |
| Feb 27, 11:38 PM CST | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 52 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.