MESOSCALE DISCUSSION 0268
   NWS STORM PREDICTION CENTER NORMAN OK
   0840 PM CDT SUN APR 04 2004
   
   AREAS AFFECTED...DEEP SOUTH TEXAS
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL...HEAVY RAINFALL 
   
   VALID 050140Z - 050345Z
   
   CONTINUE REMAINING VALID PORTION OF WW 43.
   
   MOST INTENSE CONVECTIVE ACTIVITY HAS DEVELOPED SOUTHEAST OF THE
   LAREDO AREA DURING THE PAST COUPLE OF HOURS...WITH LARGE/INTENSE
   SUPERCELL NOW PROGRESSING INTO JIM HOGG COUNTY.  OTHER VIGOROUS
   CELLS CONTINUE TO DEVELOP...MOSTLY WHERE LOW-LEVEL CONVERGENCE
   REMAINS FOCUSED...IN CLOSER PROXIMITY TO HIGHER TERRAIN WEST OF THE
   RIO GRANDE RIVER.
   
   WHILE WEAKENING CONVECTIVE SYSTEM WILL CONTINUE TO APPROACH COASTAL
   AREAS NORTH OF CORPUS CHRIST INTO THE HOUSTON AREA NEXT FEW HOURS
   ...TENDENCY FOR STRONGEST CELLS TO DEVELOP ALONG/WEST OF THE RIO
   GRANDE RIVER TO THE SOUTH OF LAREDO WILL PERSIST.  EVEN THIS
   ACTIVITY SHOULD BEGIN TO WEAKEN IN INTENSITY DURING THE NEXT 1 TO 3
   HOURS WITH LOSS OF DAYTIME HEATING.
   
   MID-LEVEL CONFLUENT BAND IN WAKE OF WEAK IMPULSE MIGRATING TOWARD
   THE MID/UPPER TEXAS COAST MAY BECOME FOCUS FOR TRAINING CELLS...
   FROM ZAPATA COUNTY INTO AREAS NEAR/JUST SOUTH OF CORPUS CHRISTI. 
   POTENTIAL FOR EXCESSIVE RAIN TOTALS AND FLASH FLOODING WILL
   EXIST...PARTICULARLY NEAR BROOKS/JIM WELLS/DUVAL COUNTY LINE...
   WHERE QUASI-STATIONARY SUPERCELLS HAS ALREADY PRODUCED HEAVY
   RAINFALL.
   
   ..KERR.. 04/05/2004
   
   
   ATTN...WFO...CRP...BRO...
   
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