MESOSCALE DISCUSSION 0364
   NWS STORM PREDICTION CENTER NORMAN OK
   0736 AM CDT THU APR 02 2009
   
   AREAS AFFECTED...ERN TX TO THE UPPER TX COAST/WRN LA/SWRN AR
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 101...102...
   
   VALID 021236Z - 021330Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   101...102...CONTINUES.
   
   WW 101 HAS BEEN EXTENDED IN AREA TO INCLUDE HOUSTON METRO AREA AND
   TIME TO 15Z.  WW 102 MAY NEED TO BE EXTENDED SWD TO THE GULF COAST
   AS WELL.
   
   REGIONAL RADARS/SATELLITE IMAGERY INDICATED AN MCS MOVING EWD ACROSS
   ERN TX...NWRN LA...AND SWRN AR.  RADAR TRENDS ALSO SHOWED AN OUTFLOW
   BOUNDARY OR GRAVITY WAVE CONTINUED TO PRECEDE THE STRONGER TSTM
   ACTIVITY...AND THUS MAINTAINING ELEVATED TSTMS ACROSS FAR ERN TX
   INTO NWRN LA/SWRN AR...AND SWWD TO THE AREA WEST OF HOUSTON.  TSTMS
   HAVE INCREASED SOME IN INTENSITY IN THIS LATTER AREA...AND GIVEN A
   MODERATELY UNSTABLE AIR MASS INTO THE UPPER TX COAST...WW 101 HAS
   BEEN EXTENDED IN AREA /HOUSTON METRO AREA/ AND TIME TO 15Z.
   
   AIR MASS DOWNSTREAM OF THE MCS WILL CONTINUE TO MODIFY/DESTABILIZE
   THIS MORNING WITH MODERATE INSTABILITY AND STRONG DEEP LAYER SHEAR
   SUPPORTIVE OF ADDITIONAL ORGANIZED STORMS.  THIS TREND APPEARS TO BE
   UNDERWAY WITH RECENT INCREASE IN INTENSITY WITH LINE OF TSTMS
   EXTENDING FROM NWRN LA SSWWD THROUGH FAR ERN TX.
   
   ..PETERS.. 04/02/2009
   
   
   ATTN...WFO...JAN...LZK...LCH...SHV...HGX...EWX...
   
   LAT...LON   29379682 30119681 31009520 31709474 32399421 33719395
               33899332 33249210 31759189 30979214 30389324 29669427
               28889551 29119623 29379682