Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 82, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at May 1, 2012, 4:12 AM CDT for Madison County, Washington County, Arkansas. It was in force for 43 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
- May 1, 2012, 4:12 AM CDT (09:12 UTC)
- Expired
- May 1, 2012, 4:55 AM CDT
- In force
- 43 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Madison County, AR, Washington County, AR
The radar
The Western Arkansas radar (KSRX), 108 km from the middle of the area, began a volume at 09:12 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 |
|---|---|---|---|
| May 1, 1:43 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 9.2 hours before the alert went out and 90 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
- 202 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1176 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 83 m²/s²
- 0-3 km storm-relative helicity
- 142 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
350
WUUS54 KTSA 010912
SVRTSA
ARC087-143-011015-
/O.NEW.KTSA.SV.W.0082.120501T0912Z-120501T1015Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
412 AM CDT TUE MAY 1 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
MADISON COUNTY IN NORTHWEST ARKANSAS
EASTERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS
* UNTIL 515 AM CDT
* AT 407 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 11 MILES NORTHWEST OF ELKINS TO 5 MILES NORTH OF
BRENTWOOD TO 3 MILES SOUTH OF WINSLOW...MOVING EAST AT 40 MPH.
STORM HAZARDS INCLUDE...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
ELKINS...WESLEY...HINDSVILLE...JAPTON...CLIFTY...SAINT PAUL...
HUNTSVILLE...WITTER...AURORA...WITHROW SPRINGS STATE PARK...
FORUM...PETTIGREW...BOSTON...MARBLE AND KINGSTON.
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.
FREQUENT CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS STORM.
LIGHTNING IS ONE OF NATURES MOST SIGNIFICANT KILLERS. REMAIN INDOORS
AND AWAY FROM WINDOWS. DO NOT USE ELECTRICAL EQUIPMENT OR TAKE A BATH
OR SHOWER DURING A STORM. REMEMBER...IF YOU CAN HEAR THUNDER...YOU
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
&&
LAT...LON 3597 9345 3587 9352 3576 9351 3578 9419
3599 9406 3618 9414 3623 9394 3623 9388
3626 9385 3631 9368 3628 9366 3628 9363
3616 9359 3615 9355 3612 9355 3612 9348
3609 9347 3608 9344
TIME...MOT...LOC 0912Z 270DEG 35KT 3611 9409 3593 9403
3576 9409
$$2 follow-up statements
495
WWUS54 KTSA 010943
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
443 AM CDT TUE MAY 1 2012
ARC143-010952-
/O.CAN.KTSA.SV.W.0082.000000T0000Z-120501T1015Z/
WASHINGTON AR-
443 AM CDT TUE MAY 1 2012
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WASHINGTON COUNTY IS
CANCELLED...
LAT...LON 3597 9345 3587 9352 3576 9351 3578 9388
3626 9385 3630 9368 3628 9366 3628 9363
3619 9361 3615 9358 3615 9355 3612 9355
3612 9348 3609 9347 3608 9344
TIME...MOT...LOC 0942Z 270DEG 35KT 3618 9376 3600 9370
3579 9380
$$
ARC087-011015-
/O.CON.KTSA.SV.W.0082.000000T0000Z-120501T1015Z/
MADISON AR-
443 AM CDT TUE MAY 1 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 AM CDT FOR
MADISON COUNTY...
AT 439 AM CDT...ISOLATED SEVERE THUNDERSTORMS WERE LOCATED ALONG A
LINE EXTENDING FROM CLIFTY TO AURORA TO COMBS...MOVING EAST AT 40
MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...HARMONY...
WITHROW SPRINGS STATE PARK...FORUM...WITTER...ALABAM...ROCKHOUSE...
DUTTON...PETTIGREW...MARBLE...BOSTON...WEATHERS...KINGSTON AND RED
STAR.
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.
FREQUENT CLOUD TO GROUND LIGHTNING IS ALSO OCCURRING WITH THIS STORM.
LIGHTNING IS ONE OF NATURES MOST SIGNIFICANT KILLERS. REMAIN INDOORS
AND AWAY FROM WINDOWS. DO NOT USE ELECTRICAL EQUIPMENT OR TAKE A BATH
OR SHOWER DURING A STORM. REMEMBER...IF YOU CAN HEAR THUNDER...YOU
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.
&&
LAT...LON 3597 9345 3587 9352 3576 9351 3578 9388
3626 9385 3630 9368 3628 9366 3628 9363
3619 9361 3615 9358 3615 9355 3612 9355
3612 9348 3609 9347 3608 9344
TIME...MOT...LOC 0942Z 270DEG 35KT 3618 9376 3600 9370
3579 9380
$$700
WWUS54 KTSA 010955
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
455 AM CDT TUE MAY 1 2012
ARC087-011005-
/O.CAN.KTSA.SV.W.0082.000000T0000Z-120501T1015Z/
MADISON AR-
455 AM CDT TUE MAY 1 2012
...THE SEVERE THUNDERSTORM WARNING FOR MADISON COUNTY IS CANCELLED...
THE THUNDERSTORMS HAVE WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
GUSTY WINDS...AND VERY HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS
LINE OF STORMS.
LAT...LON 3597 9345 3587 9352 3576 9351 3578 9388
3626 9385 3630 9368 3628 9366 3628 9363
3619 9361 3615 9358 3615 9355 3612 9355
3612 9348 3609 9347 3608 9344
TIME...MOT...LOC 0955Z 269DEG 34KT 3616 9362 3600 9357
3579 9367
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 2:56 AM CDT | Special Weather Statement | TSA | Benton | 49 min |
| May 1, 3:28 AM CDT | Severe Thunderstorm Warning | TSA | Washington | 47 min |
| May 1, 3:44 AM CDT | Special Weather Statement | TSA | Benton | 46 min |
| May 1, 3:47 AM CDT | Special Weather Statement | TSA | Crawford | 43 min |
| May 1, 4:13 AM CDT | Special Weather Statement | TSA | Crawford, Franklin, Sebastian | 62 min |
| May 1, 4:34 AM CDT | Special Weather Statement | TSA | Carroll | 41 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.