Alert archive / Oklahoma / Tornado Warnings in 2011
Tornado Warning 48, NWS Tulsa, OK
NWS Tulsa, OK issued this tornado warning at Apr 22, 2011, 6:21 PM CDT for Adair County, Delaware County, Oklahoma; Benton County, Arkansas. It was in force for 39 min. 5 reports 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
- Apr 22, 2011, 6:21 PM CDT (23:21 UTC)
- Expired
- Apr 22, 2011, 7:00 PM CDT
- In force
- 39 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Benton County, AR, Adair County, OK, Delaware County, OK
The radar
The Tulsa radar (KINX), 94 km from the middle of the area, began a volume at 23:21 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 |
|---|---|---|---|
| Apr 22, 6:30 PM CDT | HAIL 1.25 | Colcord, OK | |
| Apr 22, 6:41 PM CDT | TORNADO | 2 W Gentry, AR | A BRIEF TORNADO WAS REPORTED. NO DAMAGE HAS BEEN REPORTED IN THE AREA. THIS REPORT IS PRELIMINARY. |
| Apr 22, 7:05 PM CDT | TORNADO | Highfill, AR | BRIEF TORNADO TOUCHDOWN NEAR THE NORTHWEST ARKANSAS REGIONAL AIRPORT. |
| Apr 22, 7:10 PM CDT | HAIL 1.5 | Centerton, AR | LARGE HAIL FELL FOR 3 MIN |
| Apr 22, 7:10 PM CDT | HAIL 2 | Centerton, AR | LARGE HAIL FELL FOR 3 MIN...MOSTLY 1.5 INCH HAIL WITH LARGEST BEING 2 INCHES |
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 |
|---|---|---|---|
| Apr 22, 3:47 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.4 hours before the alert went out and 95 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
- 148 J/kg
- Mixed-layer CIN
- -391 J/kg
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 516 m²/s²
- 0-3 km storm-relative helicity
- 554 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
237
WFUS54 KTSA 222321
TORTSA
ARC007-OKC001-041-230000-
/O.NEW.KTSA.TO.W.0048.110422T2321Z-110423T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TULSA OK
621 PM CDT FRI APR 22 2011
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN ADAIR COUNTY IN NORTHEAST OKLAHOMA
SOUTHEASTERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
WESTERN BENTON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 700 PM CDT
* AT 617 PM CDT...NWS METEOROLOGISTS AND STORM SPOTTERS WERE TRACKING
A VERY DANGEROUS TORNADO LOCATED 3 MILES NORTHEAST OF KANSAS...
MOVING EAST AT 35 MPH. A TORNADO HAS BEEN CONFIRMED...TAKE COVER
NOW!
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
COLCORD...MAYSVILLE...WEST SILOAM SPRINGS...SILOAM SPRINGS...
GENTRY...DECATUR...GRAVETTE...SPRINGTOWN...HIGHFILL AND HIWASSE.
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!
IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF
BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. IF NO
UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN
AN INTERIOR ROOM AWAY FROM WINDOWS.
&&
LAT...LON 3649 9429 3621 9426 3621 9433 3615 9434
3614 9440 3616 9480 3617 9480 3617 9483
3636 9483 3644 9461
TIME...MOT...LOC 2321Z 265DEG 29KT 3623 9472
$$2 follow-up statements
415
WWUS54 KTSA 222330
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
630 PM CDT FRI APR 22 2011
ARC007-OKC001-041-230000-
/O.CON.KTSA.TO.W.0048.000000T0000Z-110423T0000Z/
BENTON AR-DELAWARE OK-ADAIR OK-
630 PM CDT FRI APR 22 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR NORTHERN
ADAIR...SOUTHEASTERN DELAWARE AND WESTERN BENTON COUNTIES...
AT 625 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO LOCATED NEAR
COLCORD...MOVING EAST AT 35 MPH. A TORNADO WAS PREVIOUSLY REPORTED
NEAR KANSAS.
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
MAYSVILLE...WEST SILOAM SPRINGS...CHEROKEE CITY...SILOAM SPRINGS...
GENTRY...DECATUR...FAIRMOUNT...GALLITIN...GRAVETTE...SPRINGTOWN...
HIGHFILL...HIWASSE...CENTERTON...VAUGHN...HEALING SPRINGS AND ROCKY
COMFORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
IN ADDITION TO A TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF
BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. IF NO
UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN
AN INTERIOR ROOM AWAY FROM WINDOWS.
&&
LAT...LON 3649 9429 3621 9426 3621 9433 3615 9434
3614 9440 3617 9480 3636 9473 3644 9461
TIME...MOT...LOC 2330Z 265DEG 30KT 3624 9464
$$919
WWUS54 KTSA 222340
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
640 PM CDT FRI APR 22 2011
OKC001-222350-
/O.CAN.KTSA.TO.W.0048.000000T0000Z-110423T0000Z/
ADAIR OK-
640 PM CDT FRI APR 22 2011
...THE TORNADO WARNING FOR NORTHERN ADAIR COUNTY IS CANCELLED...
THE ROTATION WILL STAY NORTH OF ADAIR COUNTY...AND THEREFORE...THE
WARNING HAS BEEN CANCELLED.
LAT...LON 3648 9429 3621 9426 3621 9433 3615 9434
3614 9440 3618 9465 3635 9468 3642 9460
3649 9430
TIME...MOT...LOC 2340Z 259DEG 27KT 3627 9455
$$
ARC007-OKC041-230000-
/O.CON.KTSA.TO.W.0048.000000T0000Z-110423T0000Z/
BENTON AR-DELAWARE OK-
640 PM CDT FRI APR 22 2011
...TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
SOUTHEASTERN DELAWARE AND WESTERN BENTON COUNTIES...
AT 637 PM CDT...NWS METEOROLOGISTS AND STORM SPOTTERS CONTINUED TO
TRACK A VERY DANGEROUS TORNADO LOCATED NEAR CHEROKEE CITY...MOVING
EAST AT 30 MPH. A TORNADO HAS BEEN CONFIRMED...TAKE COVER NOW!
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...GENTRY...
FAIRMOUNT...GALLITIN...DECATUR...SPRINGTOWN...GRAVETTE...HIWASSE...
CENTERTON...VAUGHN...HIGHFILL...HEALING SPRINGS AND ROCKY COMFORT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE NEAR THE PATH OF THIS STORM...TAKE COVER NOW! IF NO
UNDERGROUND SHELTER IS AVAILABLE MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR. MOBILE HOMES AND VEHICLES SHOULD BE ABANDONED FOR MORE
SUBSTANTIAL SHELTER. AVOID WINDOWS!
&&
LAT...LON 3648 9429 3621 9426 3621 9433 3615 9434
3614 9440 3618 9465 3635 9468 3642 9460
3649 9430
TIME...MOT...LOC 2340Z 259DEG 27KT 3627 9455
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 3:50 PM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers, Tulsa, Wagoner | 55 min |
| Apr 22, 4:02 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Delaware, Ottawa | 58 min |
| Apr 22, 4:21 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Delaware, Mayes, Ottawa | 39 min |
| Apr 22, 4:27 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes, Rogers | 48 min |
| Apr 22, 4:29 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 26 min |
| Apr 22, 4:43 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Ottawa | 32 min |
| Apr 22, 4:48 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa, Wagoner | 42 min |
| Apr 22, 5:03 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee, Okmulgee | 42 min |
| Apr 22, 5:11 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 49 min |
| Apr 22, 5:16 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Muskogee, Okmulgee, Tulsa, Wagoner | 44 min |
| Apr 22, 5:25 PM CDT | Severe Thunderstorm Warning | TSA | Mayes, Rogers, Tulsa, Wagoner | 30 min |
| Apr 22, 5:42 PM CDT | Tornado Warning | TSA | Creek, Okfuskee, Okmulgee | 48 min |
| Apr 22, 5:48 PM CDT | Severe Thunderstorm Warning | TSA | Delaware, Mayes | 42 min |
| Apr 22, 5:57 PM CDT | Special Weather Statement | TSA | Wagoner | 48 min |
| Apr 22, 6:03 PM CDT | Tornado Warning | TSA | Adair, Cherokee, Delaware | 27 min |
| Apr 22, 6:25 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Wagoner | 50 min |
| Apr 22, 6:28 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 47 min |
| Apr 22, 6:28 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Muskogee, Wagoner | 47 min |
| Apr 21, 8:37 PM CDT | Areal Flood Advisory | TSA | Benton | 83 min |
| Apr 22, 6:54 PM CDT | Tornado Warning | TSA | Benton | 41 min |
Nearby
Tornado Warnings in Oklahoma, 2011Tornado Warnings in Arkansas, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.