Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 221, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 12, 2012, 11:36 PM CDT for Crawford County, Franklin County, Sebastian County, Arkansas. It was in force for 54 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
- Aug 12, 2012, 11:36 PM CDT (04:36 UTC)
- Expired
- Aug 13, 2012, 12:30 AM CDT
- In force
- 54 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Crawford County, AR, Franklin County, AR, Sebastian County, AR
The radar
The Western Arkansas radar (KSRX), 35 km from the middle of the area, began a volume at 04:38 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 |
|---|---|---|---|
| Aug 12, 10:49 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 4.6 hours before the alert went out and 152 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
- 338 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1933 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 328 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
434
WUUS54 KTSA 130436
SVRTSA
ARC033-047-131-130530-
/O.NEW.KTSA.SV.W.0221.120813T0436Z-120813T0530Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1136 PM CDT SUN AUG 12 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL CRAWFORD COUNTY IN NORTHWEST ARKANSAS
WESTERN FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS
NORTHEASTERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS
* UNTIL 1230 AM CDT
* AT 1134 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 4 MILES
NORTHEAST OF RUDY...MOVING EAST AT 20 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...ALMA...
CHESTER...MOUNTAINBURG...LAKE FORT SMITH...DYER...MULBERRY AND
FERN.
THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 0 AND 32.
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 3539 9389 3546 9444 3564 9447 3564 9434
3573 9431 3570 9388
TIME...MOT...LOC 0436Z 276DEG 17KT 3557 9423
$$2 follow-up statements
050 WWUS54 KTSA 130449 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1149 PM CDT SUN AUG 12 2012 ARC131-130459- /O.CAN.KTSA.SV.W.0221.000000T0000Z-120813T0530Z/ SEBASTIAN AR- 1149 PM CDT SUN AUG 12 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SEBASTIAN COUNTY IS CANCELLED... LAT...LON 3555 9427 3567 9426 3570 9388 3539 9389 TIME...MOT...LOC 0449Z 278DEG 18KT 3558 9412 $$ ARC033-047-130530- /O.CON.KTSA.SV.W.0221.000000T0000Z-120813T0530Z/ CRAWFORD AR-FRANKLIN AR- 1149 PM CDT SUN AUG 12 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR WESTERN FRANKLIN AND CENTRAL CRAWFORD COUNTIES... AT 1146 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR MOUNTAINBURG...MOVING EAST AT 20 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LOCKE... PINEY...PLEASANT HILL...MULBERRY...FERN...TONEY...LONELM...CECIL... CRAVENS AND JETHRO. THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 17 AND 32. 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 3555 9427 3567 9426 3570 9388 3539 9389 TIME...MOT...LOC 0449Z 278DEG 18KT 3558 9412 $$
082 WWUS54 KTSA 130527 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 1227 AM CDT MON AUG 13 2012 ARC033-047-130537- /O.EXP.KTSA.SV.W.0221.000000T0000Z-120813T0530Z/ CRAWFORD AR-FRANKLIN AR- 1227 AM CDT MON AUG 13 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WESTERN FRANKLIN AND CENTRAL CRAWFORD COUNTIES EXPIRES AT 1230 AM CDT... THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA AND WEAKENED BELOW SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 4 AM. LAT...LON 3555 9427 3567 9426 3570 9388 3539 9389 TIME...MOT...LOC 0527Z 278DEG 18KT 3555 9389 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 10:28 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Washington | 47 min |
| Aug 12, 11:07 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 53 min |
| Aug 12, 11:11 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Washington | 37 min |
| Aug 12, 11:30 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Washington | 25 min |
| Aug 12, 11:58 PM CDT | Special Weather Statement | TSA | Washington | 32 min |
| Aug 13, 12:01 AM CDT | Special Weather Statement | TSA | Franklin | 29 min |
| Aug 13, 12:29 AM CDT | Special Weather Statement | TSA | Benton | 46 min |
| Aug 13, 1:06 AM CDT | Special Weather Statement | TSA | Benton, Carroll | 24 min |
| Aug 13, 2:01 AM CDT | Special Weather Statement | TSA | Benton | 29 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.