MESOSCALE DISCUSSION 2347
   NWS STORM PREDICTION CENTER NORMAN OK
   0914 PM CST THU DEC 19 2002
   
   AREAS AFFECTED......SERN AL...FL PANHANDLE...SWRN GA
   
   CONCERNING...TORNADO WATCH 796...
   
   VALID 200314Z - 200515Z
   
   TWO BANDS OF SHOWERS AND THUNDERSTORMS CONTINUE TO MOVE EWD
   THROUGH WATCH AREA WITH WRN BAND BEING THE STRONGEST.	SOME LINE
   ECHO WAVE PATTERNS AND ISOLATED MESOCYCLONES ARE NOTED.
   ALTHOUGH THERE HAS BEEN SOME DECREASE IN LIGHTNING ACTIVITY AND
   POTENTIAL HELICITY VALUES DURING PAST HOUR...A SIGNIFICANT
   PRESSURE FALL/RISE COUPLET IS MOVING ALONG WITH THE CONVECTIVE
   BANDS.	PRIND...HIGHEST PROBABILITY OF SEVERE DEVELOPMENT DURING
   THE NEXT TWO HOURS WILL BE WITH THE WESTERN MOST BAND AS IT MOVES
   EWD.
   
   ..JOHNS/CORFIDI.. 12/20/2002
   
   
   32138449 32128270 30768351 29418432 29428606 29418781
   30768705 32128629