MESOSCALE DISCUSSION 1121
   NWS STORM PREDICTION CENTER NORMAN OK
   0455 PM CDT SUN JUN 06 2004
   
   AREAS AFFECTED...SERN LA/FAR SRN MS/SWRN AL
   
   CONCERNING...CONVECTIVE TRENDS 
   
   VALID 062155Z - 070030Z
   
   DAMAGING WIND THREAT WILL CONTINUE OVER SERN LA/FAR SRN MS AND SWRN
   AL AS A LARGE LINEAR MCS INTERACTS WITH DEVELOPING CONVECTION AHEAD
   OF THE MCS...AND STORM MERGERS ENHANCE DOWNDRAFT POTENTIAL OVER THE
   AREA.
   
   21Z SFC ANALYSIS INDICATES A COLD POOL HAS DEVELOPED OVER SWRN
   MS/NERN LA WITH 2 MB MEASURED RISE AT MACOMB MS IN THE LAST HOUR.
   AIRMASS DOWNSTREAM OF THIS LINE REMAINS MODERATELY UNSTABLE WITH
   MLCAPES FROMM 1500-2000 J/KG. AS LINE MOVES SSEWD AROUND 30 KTS OVER
   THE NEXT FEW HOURS...MERGING WITH ADDITIONAL ISOLATED CONVECTION AND
   OR REMNANT OUTFLOW BOUNDARIES FROM THIS CONVECTION OVER THE NEW
   ORLEANS AREA AND OVER SWRN AL MAY LOCALLY ENHANCE UPDRAFT/DOWNDRAFTS
   WITH INCREASED DAMAGING WIND THREAT. SEVERE THREAT SHOULD SUBSIDE IN
   THE AREA AS LINE MOVES EITHER OFFSHORE OR DISSIPATES DUE TO LOSS OF
   HEATING IN THE AREA BY AROUND 01Z.
   
   ..CROSBIE.. 06/06/2004
   
   
   ATTN...WFO...BMX...MOB...JAN...LIX...LCH...
   
   29169083 30229136 31039070 31778918 32258867 32098765
   31278747 30398760