MESOSCALE DISCUSSION 0267
   NWS STORM PREDICTION CENTER NORMAN OK
   0750 AM CDT SUN MAR 10 2013
   
   AREAS AFFECTED...SWRN LA...A SMALL PART OF ERN TX
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 101250Z - 101345Z
   
   PROBABILITY OF WATCH ISSUANCE...20 PERCENT
   
   SUMMARY...AN ISOLATED SVR WIND THREAT WILL EXIST THIS MORNING ACROSS
   THE SABINE RIVER VALLEY. OWING TO THE ANTICIPATED SPORADIC NATURE OF
   ANY SVR THREAT...THE ISSUANCE OF A WW IS UNLIKELY.
   
   DISCUSSION...EMBEDDED UPDRAFTS HAVE TEMPORARILY STRENGTHENED ALONG A
   PRE-FRONTAL TROUGH/SQUALL LINE THAT EXTENDS FROM THE ARKLATEX SWWD
   TOWARD THE HOUSTON AREA. THE AREA OF GREATEST CONCERN LIES ACROSS
   POLK COUNTY TX DURING THE NEXT 15 MINUTES OR SO. HOWEVER...THE 12Z
   LCH RAOB SUGGESTS THAT SUBSTANTIAL CINH WITHIN THE 800-600-MB LAYER
   WILL LIKELY IMPEDE UPDRAFT VIGOR/DEPTH AS CONVECTION PROGRESSES EWD
   TOWARD SWRN LA. WHILE 0-1-KM SRH OF AROUND 300 M2/S2 PER THE 12Z LCH
   RAOB WILL SUPPORT OCCASIONAL LINE-EMBEDDED MESOVORTICES...WITH A
   LOCALIZED/BRIEF THREAT FOR SVR WINDS...THE OVERALL THREAT SHOULD
   REMAIN ISOLATED/SPORADIC. AS SUCH...THE ISSUANCE OF A WW IS
   UNLIKELY.
   
   ..COHEN/HART.. 03/10/2013
   
   
   ATTN...WFO...LCH...SHV...HGX...
   
   LAT...LON   31159475 31479410 31529328 31079287 30259283 30029374
               30089528 31159475