MESOSCALE DISCUSSION 0844
   NWS STORM PREDICTION CENTER NORMAN OK
   0734 PM CDT SAT MAY 21 2011
   
   AREAS AFFECTED...CENTRAL TX
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 316...
   
   VALID 220034Z - 220200Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 316
   CONTINUES.
   
   CLUSTER OF SUPERCELLS CONTINUES ACROSS CENTRAL TX.
   
   LATEST RADAR LOOP SHOWS A CLUSTER OF SUPERCELLS PERSISTING ACROSS
   CENTRAL TX ATTM...WITH THE MOST SUBSTANTIAL STORM NOW OVER BURNET
   CO.  THESE STORMS HAVE SHOWN LITTLE DESIRE TO SHIFT EWD TOWARD THE
   ERN FRINGE OF THE WATCH.  HOWEVER...VISIBLE SATELLITE SHOWS THAT
   THIS CLUSTER HAS SENT AN OUTFLOW BOUNDARY SWWD ALONG THE DRYLINE --
   WITH MORE PRONOUNCED CU AGITATION EVIDENT AS THIS BOUNDARY MOVES
   THROUGH THE DRYLINE CU FIELD.  THIS COULD EVENTUALLY RESULT IN STORM
   DEVELOPMENT W OF THE ONGOING CLUSTER -- NEAR THE WRN FRINGE OF THE
   WW.  WITH THIS AND OTHER SIGNS SUGGESTING POTENTIAL FOR STORMS TO
   LINGER BEYOND THE SCHEDULED 22/02Z EXPIRATION...LOCAL EXT OR NEW WW
   MAY NEED TO BE CONSIDERED.
   
   ..GOSS.. 05/22/2011
   
   
   ATTN...WFO...FWD...EWX...SJT...
   
   LAT...LON   29809986 30240009 31199928 31949781 31519694 30649733
               30089832 29809986