Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 13, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Feb 29, 2012, 12:56 AM CST for Benton County, Washington County, Arkansas. It was in force for 33 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 29, 2012, 12:56 AM CST (06:56 UTC)
- Expired
- Feb 29, 2012, 1:29 AM CST
- In force
- 33 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Benton County, AR, Washington County, AR
The radar
The Western Arkansas radar (KSRX), 104 km from the middle of the area, began a volume at 06:56 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 28, 10:30 PM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 6.9 hours before the alert went out and 82 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.
383
WUUS54 KTSA 290656
SVRTSA
ARC007-143-290800-
/O.NEW.KTSA.SV.W.0013.120229T0656Z-120229T0800Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1256 AM CST WED FEB 29 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN BENTON COUNTY IN NORTHWEST ARKANSAS
NORTHERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 200 AM CST
* AT 1254 AM CST...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES
SOUTHEAST OF SILOAM SPRINGS...MOVING EAST AT 65 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
HIGHFILL...TONTITOWN...CAVE SPRINGS...SPRINGDALE...LOWELL...
ROGERS...WAR EAGLE AND HOBBS STATE PARK.
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 3614 9393 3606 9455 3621 9457 3645 9387
3625 9387
TIME...MOT...LOC 0656Z 250DEG 57KT 3615 9445
$$2 follow-up statements
834
WWUS54 KTSA 290705
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
105 AM CST WED FEB 29 2012
ARC007-143-290800-
/O.CON.KTSA.SV.W.0013.000000T0000Z-120229T0800Z/
BENTON AR-WASHINGTON AR-
105 AM CST WED FEB 29 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 AM CST FOR
NORTHERN WASHINGTON AND SOUTHERN BENTON COUNTIES...
AT 103 AM CST...A SEVERE THUNDERSTORM WAS LOCATED NEAR HARMON...
MOVING EAST AT 65 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...HEALING
SPRINGS...TONTITOWN...ELM SPRINGS...CAVE SPRINGS...JOHNSON...OAK
GROVE...SHADY GROVE...SPRINGDALE...LOWELL...SONORA...ROGERS...MONTE
NE...WAR EAGLE...HOBBS STATE PARK...LARUE...BLAND...LOOKOUT AND
BEAVER LAKE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.
PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3623 9389 3614 9393 3606 9455 3623 9450
3645 9387 3639 9387 3638 9388 3637 9387
3625 9387
TIME...MOT...LOC 0706Z 250DEG 57KT 3619 9428
$$208
WWUS54 KTSA 290729
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
129 AM CST WED FEB 29 2012
ARC007-143-290739-
/O.CAN.KTSA.SV.W.0013.000000T0000Z-120229T0800Z/
BENTON AR-WASHINGTON AR-
129 AM CST WED FEB 29 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WASHINGTON AND
SOUTHERN BENTON COUNTIES IS CANCELLED...
THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 5 AM.
LAT...LON 3623 9389 3614 9393 3606 9455 3623 9450
3645 9387 3639 9387 3638 9388 3637 9387
3625 9387
TIME...MOT...LOC 0729Z 250DEG 57KT 3631 9385
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 11:53 PM CST | Severe Thunderstorm Warning | TSA | Benton | 52 min |
| Feb 29, 12:25 AM CST | Tornado Warning | TSA | Benton | 15 min |
| Feb 29, 12:36 AM CST | Severe Thunderstorm Warning | TSA | Washington | 39 min |
| Feb 29, 1:09 AM CST | Severe Thunderstorm Warning | TSA | Madison, Washington | 33 min |
| Feb 29, 1:28 AM CST | Tornado Warning | TSA | Carroll, Madison, Washington | 32 min |
| Feb 29, 1:45 AM CST | Special Weather Statement | TSA | Washington | 30 min |
| Feb 29, 1:56 AM CST | Severe Thunderstorm Warning | TSA | Madison | 34 min |
| Feb 29, 1:58 AM CST | Severe Thunderstorm Warning | TSA | Carroll, Madison | 15 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 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.