MESOSCALE DISCUSSION 1793
   NWS STORM PREDICTION CENTER NORMAN OK
   0833 PM CDT WED AUG 05 2009
   
   AREAS AFFECTED...FAR SRN OK...NWRN TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 664...
   
   VALID 060133Z - 060230Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 664
   CONTINUES.
   
   STORMS ARE DWINDLING FAST ACROSS N TX WHERE OUTFLOW HAS RACED WELL
   AHEAD.  ISOLATED ACTIVITY REMAINS OVER NW TX WHERE A HOT AND DEEPLY
   MIXED BOUNDARY LAYER EXISTS. HOWEVER...THESE STORMS SHOULD ALSO
   WEAKEN WITH TIME AS THEY MOVE INTO A DRIER AIR MASS. THUS...THE
   WATCH MAY BE CANCELLED BEFORE THE 03Z EXPIRATION TIME.
   
   OTHER CONVECTION OVER SERN OK...NOW MOVING INTO A COOLER AIR MASS
   DUE TO THE OUTFLOW...SHOULD REMAIN MOSTLY NON-SEVERE. AS FOR STORMS
   OVER FAR ERN OK INTO WRN AR...LARGER INSTABILITY REMAINS AND THESE
   STORMS WILL CONTINUE TO POSE AN ISOLATED HAIL/WIND THREAT...IN
   ADDITION TO VERY HEAVY RAIN.
   
   ..JEWELL.. 08/06/2009
   
   
   ATTN...WFO...SHV...TSA...FWD...OUN...SJT...LUB...
   
   LAT...LON   32779911 33519991 33960016 34350007 34279952 34219813
               34469707 34979645 34619574 33889540 32579535 32179578
               32399719 32779911