Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 192, NWS Tulsa, OK

August 8, 2012Washington County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 8, 2012, 12:53 PM CDT for Washington County, Arkansas. It was in force for 52 min. 2 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
Aug 8, 2012, 12:53 PM CDT (17:53 UTC)
Expired
Aug 8, 2012, 1:45 PM CDT
In force
52 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon

County Washington County, AR

The radar

The Western Arkansas radar (KSRX), 69 km from the middle of the area, began a volume at 17:56 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.

What was reported inside it

TimeReportWhereRemark
Aug 8, 1:00 PM CDTHAIL 0.752 Ese Morrow, ARNSSL SHAVE PROJECT REPORT.
Aug 8, 1:05 PM CDTHAIL 0.752 Se Clyde, ARNSSL SHAVE PROJECT REPORTS.

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 12:00Z, 5.9 hours before the alert went out and 117 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 12:00Z on 2012-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 145 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 12:00Z on 2012-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 square meters per square second.19395878Sfc1 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
145 J/kg
Mixed-layer CIN
-243 J/kg
Mixed-layer LCL
2303 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
-26 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.

823 
WUUS54 KTSA 081753
SVRTSA
ARC143-081845-
/O.NEW.KTSA.SV.W.0192.120808T1753Z-120808T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1253 PM CDT WED AUG 8 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WASHINGTON COUNTY IN NORTHWEST ARKANSAS

* UNTIL 145 PM CDT

* AT 1251 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 3 MILES SOUTH OF FARMINGTON TO 3 MILES SOUTHWEST OF
  PRAIRIE GROVE...MOVING EAST ABOUT 10 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL...
  WIND GUSTS TO 65 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  STRICKLER...GREENLAND...DEVILS DEN STATE PARK...BLACKBURN...WEST
  FORK...BRENTWOOD...ELKINS AND WINSLOW.

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 3577 9396 3576 9449 3606 9433 3607 9394
TIME...MOT...LOC 1752Z 268DEG 10KT 3600 9423 3595 9434

$$
3 follow-up statements
325 
WWUS54 KTSA 081807
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
107 PM CDT WED AUG 8 2012

ARC143-081845-
/O.CON.KTSA.SV.W.0192.000000T0000Z-120808T1845Z/
WASHINGTON AR-
107 PM CDT WED AUG 8 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR
SOUTHERN WASHINGTON COUNTY...

AT 104 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM WEST FORK TO STRICKLER...MOVING EAST ABOUT 10 MPH.

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

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
STRICKLER...BLACK OAK...DEVILS DEN STATE PARK...SULPHUR CITY...
HICKS...BLACKBURN...WOOLSEY...DURHAM...ARNETT...WYOLA...BRENTWOOD...
ELKINS...WINSLOW AND TUTTLE.

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 3577 9396 3577 9445 3605 9425 3607 9395
      3605 9394
TIME...MOT...LOC 1807Z 268DEG 10KT 3594 9414 3586 9434

$$
348 
WWUS54 KTSA 081815
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
115 PM CDT WED AUG 8 2012

ARC143-081845-
/O.CON.KTSA.SV.W.0192.000000T0000Z-120808T1845Z/
WASHINGTON AR-
115 PM CDT WED AUG 8 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM CDT FOR
SOUTHERN WASHINGTON COUNTY...

AT 113 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR STRICKLER...
MOVING EAST AT 20 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...HOGEYE...
WALNUT GROVE...BLACKBURN...FARMINGTON...WEST FORK...WOOLSEY...
WINSLOW...GREENLAND...BRENTWOOD...BLACK OAK...SULPHUR CITY...
DURHAM...ARNETT...WYOLA...ELKINS...TUTTLE AND HICKS.

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 3577 9396 3577 9445 3605 9425 3607 9395
      3605 9394
TIME...MOT...LOC 1815Z 259DEG 19KT 3586 9429

$$
358 
WWUS54 KTSA 081835
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
135 PM CDT WED AUG 8 2012

ARC143-081846-
/O.EXP.KTSA.SV.W.0192.000000T0000Z-120808T1845Z/
WASHINGTON AR-
135 PM CDT WED AUG 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN WASHINGTON COUNTY
EXPIRES AT 145 PM CDT...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

GUSTY WINDS...SMALL HAIL AND HEAVY RAIN WILL STILL BE POSSIBLE WITH
THIS STORM.

LAT...LON 3577 9396 3577 9445 3605 9425 3607 9395
      3605 9394
TIME...MOT...LOC 1836Z 259DEG 19KT 3588 9416

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 10:53 AM CDTSpecial Weather StatementTSABenton37 min
Aug 8, 12:21 PM CDTSpecial Weather StatementTSAWashington39 min
Aug 8, 12:44 PM CDTSevere Thunderstorm WarningTSAMadison46 min
Aug 8, 1:35 PM CDTSpecial Weather StatementTSAFranklin25 min
Aug 8, 2:34 PM CDTSpecial Weather StatementTSASebastian26 min
Aug 8, 2:39 PM CDTSevere Thunderstorm WarningTSAFranklin, Sebastian21 min
Aug 8, 2:55 PM CDTSpecial Weather StatementTSACrawford50 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.