MESOSCALE DISCUSSION 0300
   NWS STORM PREDICTION CENTER NORMAN OK
   0343 PM CDT FRI MAR 27 2009
   
   AREAS AFFECTED...SERN TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 77...
   
   VALID 272043Z - 272145Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 77
   CONTINUES.
   
   WEAK SFC RIDGING PERSISTS ACROSS SERN TX PARTIALLY AIDED BY EARLIER
   SHOWERS/THUNDERSTORMS.  STRONGER HEATING ALONG WRN EDGE OF THIS
   BUBBLE HIGH APPEARS TO BE PARTLY RESPONSIBLE FOR RECENT INCREASE IN
   CONVECTION ACROSS MONTGOMERY COUNTY.  THIS ACTIVITY SHOULD GRADUALLY
   SPREAD EAST ACROSS THE REMAINDER OF THE WW OVER THE NEXT FEW
   HOURS...POSSIBLY EXTENDING BEYOND THE CURRENT WATCH EXPIRATION. 
   LOCAL EXTENSION MAY BE REQUIRED TO ACCOUNT FOR THESE STORMS.
   
   ..DARROW.. 03/27/2009
   
   
   ATTN...WFO...LCH...SHV...HGX...
   
   LAT...LON   30689562 31149484 31079359 29879387 29549497 29729586
               30689562