MESOSCALE DISCUSSION 0495
   NWS STORM PREDICTION CENTER NORMAN OK
   0516 AM CDT FRI APR 17 2009
   
   AREAS AFFECTED...PARTS OF THE EDWARDS PLATEAU AND HILL COUNTRY
   REGION OF TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 158...
   
   VALID 171016Z - 171115Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 158
   CONTINUES.
   
   STORMS/LOCAL SEVERE THREAT CONTINUE ACROSS ROUGHLY THE SRN HALF OF
   THE WW.
   
   WELL-ORGANIZED BOW ECHO WHICH EARLIER MOVED ACROSS MCCULLOCH AND
   MASON COUNTIES IS NOW NEARING SAN SABA COUNTY...THOUGH THIS CLUSTER
   OF STORMS APPEARS TO E SLOWLY WEAKENING AND BECOMING ELEVATED WITH
   TIME AS IT MOVES INTO A DRIER/LESS UNSTABLE AIRMASS.
   
   MEANWHILE...SLIGHT STORM INTENSIFICATION HAS BEEN OBSERVED OVER THE
   SRN THIRD OF THE WATCH -- I.E. N AND NE OF DEL RIO -- WITHIN
   CONVECTION TRAILING SWWD FROM THE AFOREMENTIONED BOW.
   
   CAPPING SEEMS TO CONTINUE HAMPERING SRN DEVELOPMENT OF STORMS...WITH
   THE STORMS ALONG THIS TRAILING PORTION OF THE BOW APPEARING SLIGHTLY
   ELEVATED TO THE N SIDE OF THE SYSTEMS OUTFLOW.  WE WILL CONTINUE TO
   MONITOR THIS CONVECTION FOR SIGNS OF ADDITIONAL
   INTENSIFICATION...BUT ATTM IT REMAINS A QUESTION AS TO WHETHER AN
   ADDITIONAL WW WILL BE NEEDED.
   
   ..GOSS.. 04/17/2009
   
   
   ATTN...WFO...FWD...EWX...SJT...
   
   LAT...LON   29490100 29810149 30240118 30550011 31019917 31679939
               31679789 30789773 29919866 29629981 29490100