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Severe Thunderstorm Watch 239
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WW0239 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL9

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 239
   NWS STORM PREDICTION CENTER NORMAN OK
   1020 AM CDT FRI JUN 6 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     ARKANSAS
     EXTREME SOUTHEAST OKLAHOMA

   * EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1020 AM UNTIL
     600 PM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
       INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTH OF
   FORT SMITH ARKANSAS TO 50 MILES EAST OF LITTLE ROCK ARKANSAS. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU9).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
   AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
   THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
   AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 238...

   DISCUSSION...NEW CELLS ARE DEVELOPING IN ADVANCE OF A LOOSELY
   ORGANIZED MCS MOVING ACROSS ERN OK...WITHIN A MODERATE UNSTABLE
   ENVIRONMENT CHARACTERIZED BY CAPE OF 2500 J/KG.  EXISTING MCS COLD
   POOL AND 50 KT WLY MID LEVEL WINDS EVIDENT ON KTLX VAD PROFILE
   INDICATE STORMS WILL SPREAD EWD AS AIR MASS DESTABILIZES FURTHER
   INTO THE AFTERNOON IN RESPONSE TO STRONG DIABATIC HEATING. 
   SUFFICIENT DEEP LAYER SHEAR WILL ENHANCE STORM ORGANIZATION WITH
   PRIMARY POTENTIAL FOR DAMAGING WIND GUSTS AND LARGE HAIL.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 28030.


   ...WEISS
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Page last modified: June 06, 2014
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