MESOSCALE DISCUSSION 1013
   NWS STORM PREDICTION CENTER NORMAN OK
   1130 PM CDT TUE JUN 09 2009
   
   AREAS AFFECTED...NRN AR...SRN MO...NERN OK
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 361...
   
   VALID 100430Z - 100530Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 361
   CONTINUES.
   
   STRONGEST THUNDERSTORM UPDRAFTS CONTINUE TO BE MAINTAINED ALONG WRN
   FRINGE OF MID MS VALLEY CONVECTION...PRIMARILY DUE TO STRENGTHENING
   LLJ.  LATEST RADAR DATA SUGGESTS LEADING PORTION OF SQUALL LINE IS
   SURGING SEWD AT ROUGHLY 35KT AND SHOULD APPROACH SRN EDGE OF WW
   SHORTLY AFTER 05Z.  ALTHOUGH A NEW WW IS NOT ANTICIPATED AT THIS
   TIME...A LOCAL EXTENSION MAY BE REQUIRED FROM CRAWFORD COUNTY
   AR...EWD TO CLEBURNE COUNTY TO ACCOUNT FOR THIS ACTIVITY SPREADING
   SOUTH OF WW WITHIN THE HOUR.
   
   ..DARROW.. 06/10/2009
   
   
   ATTN...WFO...LZK...SGF...TSA...
   
   LAT...LON   36809509 36909345 36029236 35529315 35959485 36809509