MESOSCALE DISCUSSION 1378
   NWS STORM PREDICTION CENTER NORMAN OK
   0520 PM CDT FRI JUN 24 2011
   
   AREAS AFFECTED...CENTRAL MS/AL/GA
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 242220Z - 242345Z
   
   THUNDERSTORMS AND ASSOCIATED COLD POOL WILL CONTINUE TO DEVELOP
   SWD/SEWD ACROSS CENTRAL MS/AL/GA THE NEXT FEW HOURS...AND A MERGER
   WITH THE REMNANT SEA BREEZE IS POSSIBLE BY LATE EVENING.  A NEW
   SEVERE THUNDERSTORM WATCH COULD BECOME NECESSARY S OF WATCH 546.
   
   A BROKEN LINE/CLUSTER OF STORMS CONTINUES TO DEVELOP SWD/SEWD TOWARD
   CENTRAL MS/AL/GA ON A COMPOSITE OUTFLOW BOUNDARY.  S OF THE ONGOING
   CONVECTION...THE ENVIRONMENT REMAINS UNSTABLE WITH MLCAPE OF
   2500-3000 J/KG WITH LITTLE CONVECTIVE INHIBITION.  A FEW NEW STORMS
   HAVE BEGUN TO DEVELOP S OF THE INITIAL LINE/CLUSTER...AND ADDITIONAL
   STORM DEVELOPMENT IS EXPECTED THIS AFTERNOON/EVENING ALONG THE
   OUTFLOW.  THOUGH ONLY WEAK NWLY MIDLEVEL FLOW IS PRESENT...THE
   STRONG INSTABILITY AND DCAPE OF 1200-1500 J/KG WILL PROMOTE STRONG
   DOWNBURST WINDS WITH MULTICELL CLUSTERS.  LATER THIS EVENING...THE
   OUTFLOW MAY PROGRESS FAR ENOUGH S TO MERGE WITH THE REMNANT SEA
   BREEZE...WHICH WOULD LIKELY RESULT IN A SHORT-TERM INCREASE IN STORM
   COVERAGE/INTENSITY AND ASSOCIATED DOWNBURST POTENTIAL BEFORE SUNSET
   AND BOUNDARY LAYER STABILIZATION.
   
   ..THOMPSON.. 06/24/2011
   
   
   ATTN...WFO...FFC...TAE...BMX...MOB...JAN...
   
   LAT...LON   31478811 31448900 31588980 31889025 32509042 32639025
               32739002 32598871 33058735 33328614 33348553 33618465
               33708388 33558344 32958351 32428391 31888502 31478811