MESOSCALE DISCUSSION 0308
   NWS STORM PREDICTION CENTER NORMAN OK
   0522 PM CDT SAT MAR 23 2013
   
   AREAS AFFECTED...SERN MS...SRN AL...SWRN GA...FL PANHANDLE
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 58...
   
   VALID 232222Z - 232315Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 58
   CONTINUES.
   
   SUMMARY...ISOLATED HAIL THREAT WILL CONTINUE ACROSS THE WW AREA THE
   NEXT 1-2 HOURS. A NEW WW HAS REPLACED PORTIONS OF THE WATCH AREA FOR
   EXPECTED INCREASE IN SEVERE/TORNADO THREAT THIS EVENING. SEE MCD 307
   FOR MORE DETAILS.
   
   DISCUSSION...AN ISOLATED HAIL THREAT WILL CONTINUE THE NEXT HOUR OR
   TWO TO THE NORTH OF STATIONARY BOUNDARY IN WAA REGIME. THE STRONGEST
   STORMS IN THE WATCH AREA WERE LOCATED OVER THE FLORIDA PANHANDLE AS
   OF 22Z. THESE STORMS ARE EXPECTED TO WEAKEN AS THEY APPROACH THE
   NORTHERN FL PENINSULA WHERE INSTABILITY AND LAPSE RATES BECOME
   UNFAVORABLE FOR SUSTAINING STRONG/SVR STORMS. FARTHER WEST THE WARM
   FRONT WAS FURTHER INLAND...AND THE ENVIRONMENT ACROSS SOUTHEAST MS
   INTO SWRN AL HAS LARGELY REMAINED IN TACT WITH POCKETS OF SFC
   HEATING ALLOWING MLCAPE VALUES TO APPROACH 500-1000 J/KG. AS LOW
   LEVEL SHEAR INCREASES WITH THE APPROACH OF MID LEVEL TROUGH...SEVERE
   AND/OR TORNADO THREAT WILL SUBSEQUENTLY INCREASE. THEREFORE...A NEW
   WW HAS REPLACED A SMALL PORTION OF WW 58 ACROSS SE MS.  REFER TO MCD
   307 FOR MORE DETAILS.
   
   OTHERWISE...SEVERE THREAT SHOULD DIMINISH ACROSS WESTERN PORTIONS OF
   THE WW AREA AS BOUNDARY LAYER STABILIZATION CONTINUES INTO THE
   EVENING HOURS.
   
   ..LEITMAN/KERR.. 03/23/2013
   
   
   ATTN...WFO...JAX...TAE...BMX...MOB...JAN...LIX...
   
   LAT...LON   29338326 30638905 32688906 31338322 29338326