MESOSCALE DISCUSSION 0171
   NWS STORM PREDICTION CENTER NORMAN OK
   1047 PM CST FRI FEB 27 2009
   
   AREAS AFFECTED...PORTIONS OF MS/AL
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 39...
   
   VALID 280447Z - 280645Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 39
   CONTINUES.
   
   WIDESPREAD ELEVATED CONVECTION CONTINUES ACROSS WW AREA...ALONG WITH
   LIMITED SEVERE THREAT.
   
   LATEST RADAR DEPICTS WIDESPREAD SHOWERS AND THUNDERSTORMS CONTINUING
   ACROSS ROUGHLY THE NRN HALVES OF MS AND AL...WITHIN ENVIRONMENT
   FEATURING MARGINAL INSTABILITY ATOP A STABLE/RAIN-COOLED BOUNDARY
   LAYER.  CLOUD TOPS CONTINUE TO COOL PER LATEST IR IMAGERY...AS MAIN
   UPPER SHORT-WAVE TROUGH DIGS SSEWD ACROSS THE PLAINS AND A SMALLER
   FEATURE SHIFTS ACROSS THE OZARKS REGION.  THIS IMPLIED INCREASE IN
   ASCENT SHOULD CONTINUE TO SUPPORT WIDESPREAD CONVECTION OVER THE
   NEXT SEVERAL HOURS.  WITH SHEAR SUPPORTIVE OF ORGANIZED
   STORMS...SOME THREAT FOR SEVERE STORMS PERSISTS.  HOWEVER...OVERALL
   LACK OF INSTABILITY SHOULD KEEP THE THREAT GENERALLY ISOLATED.
   
   ..GOSS.. 02/28/2009
   
   
   ATTN...WFO...FFC...TAE...BMX...MOB...MEG...JAN...
   
   LAT...LON   32369020 33379050 34069031 33408522 31648519 32369020