MESOSCALE DISCUSSION 0353
   NWS STORM PREDICTION CENTER NORMAN OK
   1154 AM CDT SUN MAR 31 2013
   
   AREAS AFFECTED...SERN TX...LA...WCNTRL MS
   
   CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 70...71...
   
   VALID 311654Z - 311730Z
   
   PROBABILITY OF WATCH ISSUANCE...95 PERCENT
   
   SUMMARY...SEVERE THUNDERSTORM WATCH WILL BE ISSUED SOON TO BETTER
   REFLECT ONGOING SEVERE THREAT FROM SERN TX INTO WCNTRL MS.
   
   DISCUSSION...WELL ORGANIZED SQUALL LINE CONTINUES ITS SEWD MOVEMENT
   ACROSS THE ARKLATEX AT ROUGHLY 35KT...THOUGH A SLIGHTLY FASTER SURGE
   IS NOTED WITH ARCING LINE SEGMENT NEAR THE SABINE RIVER. 
   PROPAGATION COMPONENT WILL CONTRIBUTE CONSIDERABLY TO THE SWD
   MOVEMENT OF THIS MIDDLE LINE SEGMENT AS IT MOVES ACROSS LA. 
   ADDITIONALLY...SWWD DEVELOPMENT IS EXPECTED ACROSS SERN TX
   ACCOUNTING FOR THE NEED TO INCLUDE PORTIONS OF HGX CWA.
   
   ..DARROW/CORFIDI.. 03/31/2013
   
   
   ATTN...WFO...JAN...LIX...LCH...SHV...HGX...
   
   LAT...LON   31149571 33069114 31999040 30259185 31149571