MESOSCALE DISCUSSION 0544
   NWS STORM PREDICTION CENTER NORMAN OK
   0908 PM CDT SAT APR 23 2011
   
   AREAS AFFECTED...MUCH OF CNTRL AND ERN OK
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 240208Z - 240345Z
   
   STORMS ARE EXPECTED TO INCREASE IN COVERAGE OVER PORTIONS OF CNTRL
   AND ERN OK...AND A WATCH MAY BE NEEDED FOR HAIL.
   
   LATEST RADAR TRENDS SHOW AN INCREASE IN ECHOES OVER E CNTRL OK IN A
   ZONE OF ISENTROPIC LIFT. 00Z OUN SOUNDING SHOWS SUBSTANTIAL ELEVATED
   INSTABILITY IN PLACE WITH FAVORABLE SHEAR FOR ELEVATED SUPERCELLS.
   PARAMETERS ARE QUITE FAVORABLE FOR LARGE HAIL PRODUCTION...AND
   SEVERAL MODELS AGREE ON AN INCREASE IN CONVECTION ACROSS THE AREA.
   THUS...A WATCH MAY BE NEEDED.
   
   ..JEWELL.. 04/24/2011
   
   
   ATTN...WFO...SGF...TSA...OUN...
   
   LAT...LON   35529444 34799695 34819817 36019813 36659714 36929546
               36939468 36699435 35529444