Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 270, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 26, 2012, 8:20 PM CDT for Benton County, Arkansas. It was in force for 55 min. 4 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
- Sep 26, 2012, 8:20 PM CDT (01:20 UTC)
- Expired
- Sep 26, 2012, 9:15 PM CDT
- In force
- 55 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Benton County, AR
The radar
The Western Arkansas radar (KSRX), 119 km from the middle of the area, began a volume at 01:23 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 26, 8:58 PM CDT | HAIL 1.25 | Hiwasse, AR | DURATION OF HAIL WAS APPROXIMATELY 5 MINUTES. |
| Sep 26, 8:59 PM CDT | TSTM WND GST 65 | 5 E Hiwasse, AR | SPOTTER 4 TO 5 E OF HIWASSE ON HWY 72 ESTIMATED WIND GUST TO 65 MPH. |
| Sep 26, 8:59 PM CDT | HAIL 1.75 | 5 E Hiwasse, AR | SPOTTER 4 TO 5 EAST OF HIWASSE ON HWY 72, 1.5 TO 1.75 INCH HAIL OBSERVED. |
| Sep 26, 9:15 PM CDT | HAIL 1 | Bentonville, AR |
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 00:00Z, 1.3 hours before the alert went out and 71 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
- 440 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 903 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
693
WUUS54 KTSA 270120
SVRTSA
ARC007-270215-
/O.NEW.KTSA.SV.W.0270.120927T0120Z-120927T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
820 PM CDT WED SEP 26 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN BENTON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 915 PM CDT
* AT 816 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTHWEST
OF GRAVETTE...MOVING SOUTHEAST AT 25 MPH.
STORM HAZARDS INCLUDE...
HALF DOLLAR SIZE HAIL...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
GRAVETTE...HIWASSE...BELLA VISTA...BENTONVILLE...PEA RIDGE...
GARFIELD...GATEWAY...LOWELL AND ROGERS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.
&&
LAT...LON 3621 9405 3621 9410 3647 9461 3651 9460
3650 9386
TIME...MOT...LOC 0120Z 299DEG 21KT 3653 9450
$$3 follow-up statements
204
WWUS54 KTSA 270134
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
834 PM CDT WED SEP 26 2012
ARC007-270215-
/O.CON.KTSA.SV.W.0270.000000T0000Z-120927T0215Z/
BENTON AR-
834 PM CDT WED SEP 26 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
NORTHEASTERN BENTON COUNTY...
AT 833 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR SULPHUR
SPRINGS...MOVING SOUTHEAST AT 25 MPH.
STORM HAZARDS INCLUDE...
DAMAGING GOLF BALL SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
GRAVETTE...HIWASSE...MILLER...BELLA VISTA...CENTERTON...
BENTONVILLE...GARFIELD...AVOCA...MONTE NE...GATEWAY...PEA RIDGE...
LOWELL...ROGERS...HILL TOP AND WALNUT HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.
TORNADOES CAN DEVELOP SUDDENLY IN THESE CONDITIONS. TAKE COVER ON THE
LOWEST FLOOR IN AN INTERIOR ROOM AWAY FROM WINDOWS AND DOORS. PREPARE
TO TAKE TORNADO PRECAUTIONS ON SHORT NOTICE.
&&
LAT...LON 3621 9405 3621 9410 3643 9453 3651 9452
3650 9387 3649 9387
TIME...MOT...LOC 0134Z 303DEG 20KT 3646 9444
$$016
WWUS54 KTSA 270149
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
849 PM CDT WED SEP 26 2012
ARC007-270215-
/O.CON.KTSA.SV.W.0270.000000T0000Z-120927T0215Z/
BENTON AR-
849 PM CDT WED SEP 26 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
NORTHEASTERN BENTON COUNTY...
AT 846 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR HIWASSE...
MOVING SOUTHEAST AT 25 MPH.
STORM HAZARDS INCLUDE...
HALF DOLLAR SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...MILLER...
CENTERTON...BELLA VISTA...BENTONVILLE...PEA RIDGE...GARFIELD...
AVOCA...MONTE NE...GATEWAY...LOWELL...ROGERS...HILL TOP AND WALNUT
HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.
TORNADOES CAN DEVELOP SUDDENLY IN THESE CONDITIONS. TAKE COVER ON THE
LOWEST FLOOR IN AN INTERIOR ROOM AWAY FROM WINDOWS AND DOORS. PREPARE
TO TAKE TORNADO PRECAUTIONS ON SHORT NOTICE.
&&
LAT...LON 3621 9405 3621 9410 3637 9442 3651 9443
3650 9387 3649 9387
TIME...MOT...LOC 0150Z 299DEG 22KT 3641 9433
$$169
WWUS54 KTSA 270204
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
904 PM CDT WED SEP 26 2012
ARC007-270215-
/O.CON.KTSA.SV.W.0270.000000T0000Z-120927T0215Z/
BENTON AR-
904 PM CDT WED SEP 26 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR
EASTERN BENTON COUNTY...
AT 858 PM CDT...A STORM SPOTTER REPORTED HALF DOLLAR SIZE HAIL IN
HIWASSE. THIS SEVERE THUNDERSTORM WAS LOCATED NEAR MILLER AT 903 PM
CDT...MOVING SOUTHEAST AT 20 MPH.
STORM HAZARDS INCLUDE...
HALF DOLLAR SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
BENTONVILLE...GARFIELD...AVOCA...MONTE NE...GATEWAY...PEA RIDGE...
LOWELL...ROGERS...HILL TOP AND WALNUT HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PEOPLE OUTDOORS SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM HAS PASSED.
TORNADOES CAN DEVELOP SUDDENLY IN THESE CONDITIONS. TAKE COVER ON THE
LOWEST FLOOR IN AN INTERIOR ROOM AWAY FROM WINDOWS AND DOORS. PREPARE
TO TAKE TORNADO PRECAUTIONS ON SHORT NOTICE.
&&
LAT...LON 3621 9405 3621 9410 3633 9434 3651 9432
3650 9387 3649 9387
TIME...MOT...LOC 0203Z 297DEG 19KT 3638 9426
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 26, 9:15 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 13 min |
| Sep 27, 3:12 PM CDT | Areal Flood Advisory | TSA | Sebastian | 2 hr |
| Sep 27, 6:58 PM CDT | Special Weather Statement | TSA | Madison | 47 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.