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Severe Thunderstorm Watch 488
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WW0488 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.
   SEL8

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 488
   NWS STORM PREDICTION CENTER NORMAN OK
   535 PM CDT THU AUG 8 2013

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     NORTHERN AND CENTRAL ARKANSAS
     THE BOOTHEEL OF MISSOURI
     PARTS OF EASTERN OKLAHOMA

   * EFFECTIVE THIS THURSDAY AFTERNOON FROM 535 PM UNTIL MIDNIGHT
     CDT.

   * PRIMARY THREATS INCLUDE...
     SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2
       INCHES IN DIAMETER POSSIBLE
     SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTHWEST
   OF MCALESTER OKLAHOMA TO 35 MILES SOUTHEAST OF JONESBORO
   ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

   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 487...

   DISCUSSION...THUNDERSTORMS HAVE BEGUN DEVELOPING THIS AFTERNOON
   WITHIN A MOIST/VERY UNSTABLE ENVIRONMENT NEAR AND N OF A WEAK
   SURFACE BOUNDARY EXTENDING WEST-TO-EAST ACROSS OKLAHOMA AND
   ARKANSAS.  WITH SLY/SELY LOW-LEVEL FLOW VEERING WITH HEIGHT TO
   AROUND 30 KT FROM THE WEST AT MID LEVELS...SHEAR IS SUFFICIENT --
   GIVEN DEGREE OF OBSERVED CAPE -- TO SUPPORT ORGANIZED/SEVERE STORMS.
   EXPECT LARGE HAIL TO BE THE MAIN THREAT INITIALLY...THOUGH POTENTIAL
   FOR WIND DAMAGE MAY INCREASE OVER THE NEXT COUPLE OF HOURS GIVEN THE
   POSSIBILITY FOR STORMS TO GROW UPSCALE INTO SMALL BOWING CLUSTERS.

   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 500. MEAN STORM
   MOTION VECTOR 26030.


   ...GOSS
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