MESOSCALE DISCUSSION 0997
   NWS STORM PREDICTION CENTER NORMAN OK
   0935 PM CDT MON JUN 08 2009
   
   AREAS AFFECTED...SERN MO...SRN IL...WRN KY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 353...
   
   VALID 090235Z - 090330Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 353
   CONTINUES.
   
   TWO MAIN THUNDERSTORM CLUSTERS ARE PROPAGATING SEWD ACROSS WW353. 
   THIS ACTIVITY IS GRADUALLY WEAKENING AS IT ENCOUNTERS MORE HOSTILE
   AIRMASS/WEAKER INSTABILITY NEAR THE OH RIVER.  EVEN SO...IT APPEARS
   CONVECTION WILL NOT DISSIPATE BEFORE WATCH EXPIRATION.  FOR THIS
   REASON A LOCAL EXTENSION MAY BE REQUIRED TO ACCOUNT FOR SEVERE
   THREAT LINGERING ANOTHER ONE OR TWO HOURS.
   
   ..DARROW.. 06/09/2009
   
   
   ATTN...WFO...PAH...LSX...SGF...
   
   LAT...LON   37179137 37858930 37748813 37128842 36648945 36649088
               37179137