MESOSCALE DISCUSSION 0510
   NWS STORM PREDICTION CENTER NORMAN OK
   0632 AM CDT SAT APR 18 2009
   
   AREAS AFFECTED...PORTIONS OF CENTRAL AND S TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 164...
   
   VALID 181132Z - 181330Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 164
   CONTINUES.
   
   SEVERE THREAT CONTINUES ACROSS PARTS OF CENTRAL AND S TX IN AND NEAR
   WW 164.
   
   LATEST RADAR LOOP SHOWS A CONTINUED INCREASE IN STORM COVERAGE
   ACROSS CENTRAL TX -- WITH THE STRONGEST CELLS LOCATED WITHIN WW 164.
    WHILE THE CONVECTIVE DEVELOPMENT HAS BEEN ASSISTED BY A WEAK
   FEATURE ROTATING AROUND THE SERN SIDE OF THE SRN ROCKIES UPPER
   LOW...WV IMAGERY REVEALS WEAK SHORT-WAVE RIDGING IN THE SUBTROPICAL
   FLOW NOW SPREADING ACROSS MEXICO TOWARD S TX.  STILL...MIXED-LAYER
   CAPE INVOF 1000 J/KG SHOULD SUPPORT A CONTINUED THREAT FOR HAIL WITH
   STRONGER STORMS OVER THE NEXT FEW HOURS.
   
   ..GOSS.. 04/18/2009
   
   
   ATTN...WFO...HGX...FWD...CRP...EWX...
   
   LAT...LON   28139861 27939977 28979986 29819955 30689691 30279647
               29029707 28139861