MESOSCALE DISCUSSION 0790
   NWS STORM PREDICTION CENTER NORMAN OK
   1214 PM CDT TUE MAY 06 2003
   
   AREAS AFFECTED...SWRN/CNTRL TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 266...
   
   VALID 061714Z - 061915Z
   
   CONVECTIVE LINE OVER SWRN-CNTRL TX WILL CONTINUE TO HAVE AN ISOLATED
   HAIL OR WIND DAMAGE THREAT OVER THE NEXT FEW HOURS.
   
   STORMS IN THE SRN PORTION OF WW 266 WILL CONTINUE TO DEVELOP EWD AND
   SWD ALONG OUTFLOW BOUNDARY EXTENDING FROM DEL RIO TO NW OF SAN
   ANTONIO. STRONG INSTABILITY EXISTS ACROSS SW TX WITH MLCAPE OF 3000
   J/KG. DEEP LAYER SHEAR WAS ALSO STRONG WITH 0-6 KM SHEAR VALUES
   AROUND 50 KT. THE VERY UNSTABLE AIR COUPLED WITH THE STRONG DEEP
   LAYER SHEAR SUGGEST THE SUPERCELL THREAT WILL CONTINUE. AS ACTIVITY
   DEVELOPS SWD ALONG THE OUTFLOW BOUNDARY...NEW SUPERCELLS MAY DEVELOP
   WITH A POTENTIAL FOR LARGE HAIL AND/OR DAMAGING WINDS. WW IS NOT
   ANTICIPATED ATTM BUT AREAS S OF WW 266 APPEAR MOST LIKELY FOR NEW
   DEVELOPMENT AND THE AREA WILL CONTINUE TO BE MONITORED. 
   
   ..BROYLES.. 05/06/2003
   
   
   ATTN...WFO...FWD...EWX...SJT...
   
   30399974 31529854 31589785 31499721 31289666 30019746
   29119862 29209959 29590033