Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 30, NWS Tulsa, OK

April 3, 2012Crawford County, Franklin County, Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 2012, 7:20 PM CDT for Crawford County, Franklin County, Sebastian County, Arkansas. It was in force for 40 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 3, 2012, 7:20 PM CDT (00:20 UTC)
Expired
Apr 3, 2012, 8:00 PM CDT
In force
40 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), 26 km from the middle of the area, began a volume at 00:23 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

TimeReportWhereRemark
Apr 3, 7:24 PM CDTTSTM WND GST 60Fort Smith, ARHWY 540 AND FREE FERRY RD.
Apr 3, 7:24 PM CDTHAIL 1Fort Smith, ARHWY 540 AND FREE FERRY RD.
Apr 3, 7:35 PM CDTTSTM WND GST 60Alma, ARTIME ESTIMATED.
Apr 3, 7:47 PM CDTHAIL 11 E Lavaca, ARTIME ESTIMATED.
Apr 3, 7:51 PM CDTTSTM WND DMGVan Buren, ARTREES DOWN IN VAN BUREN AND MULBERRY.

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.

IssuedProductOfficeLasted
Apr 3, 3:43 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.3 hours before the alert went out and 162 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.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2012-04-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 140 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2012-04-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
140 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
1481 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
20 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

598 
WUUS54 KTSA 040020
SVRTSA
ARC033-047-131-040100-
/O.NEW.KTSA.SV.W.0030.120404T0020Z-120404T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
720 PM CDT TUE APR 3 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAWFORD COUNTY IN NORTHWEST ARKANSAS
  WESTERN FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS
  NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 800 PM CDT

* AT 718 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR VAN BUREN...
  MOVING NORTHEAST AT 35 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...
  WIND GUSTS TO 60 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...FIGURE
  FIVE...LAVACA...CEDARVILLE...RUDY...ALMA...DYER...MOUNTAINBURG...
  MULBERRY...CHESTER AND LAKE FORT SMITH.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 0 AND 28.

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.

TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3543 9392 3524 9431 3544 9445 3553 9445
      3577 9407
TIME...MOT...LOC 0021Z 235DEG 32KT 3542 9431

$$
1 follow-up statement
045 
WWUS54 KTSA 040048
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
748 PM CDT TUE APR 3 2012

ARC033-047-131-040100-
/O.CON.KTSA.SV.W.0030.000000T0000Z-120404T0100Z/
CRAWFORD AR-FRANKLIN AR-SEBASTIAN AR-
748 PM CDT TUE APR 3 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHEASTERN SEBASTIAN...WESTERN FRANKLIN AND CRAWFORD COUNTIES...

AT 747 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR PLEASANT
HILL...MOVING NORTHEAST AT 35 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...PINEY...
TONEY...LOCKE...FERN AND MOUNT GAYLER.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 5 AND 28.

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.

TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER
ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3529 9421 3555 9442 3577 9408 3543 9392
TIME...MOT...LOC 0049Z 235DEG 32KT 3556 9406

$$

The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 3, 7:19 PM CDTAreal Flood AdvisoryTSACrawford, Sebastian2 hr
Apr 3, 7:22 PM CDTSpecial Weather StatementTSASebastian68 min
Apr 3, 7:51 PM CDTSevere Thunderstorm WarningTSAFranklin, Sebastian54 min
Apr 3, 7:57 PM CDTSevere Thunderstorm WarningTSACrawford, Franklin, Madison, Washington48 min
Apr 3, 8:35 PM CDTAreal Flood AdvisoryTSACrawford, Franklin, Sebastian3 hr
Apr 3, 8:46 PM CDTSpecial Weather StatementTSAFranklin59 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.