MESOSCALE DISCUSSION 1001
   NWS STORM PREDICTION CENTER NORMAN OK
   0250 AM CDT SAT MAY 28 2011
   
   AREAS AFFECTED...SRN/ERN KS...WRN MO
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 280750Z - 280915Z
   
   ELEVATED THUNDERSTORMS DEVELOPING ACROSS SRN/ERN KS THIS MORNING MAY
   POSE A THREAT FOR ISOLATED LARGE HAIL. IT IS UNCERTAIN WHETHER A WW
   WILL BE NECESSARY...BUT CONVECTIVE AND ENVIRONMENTAL TRENDS WILL
   CONTINUE TO BE MONITORED.
   
   AREA PROFILERS AND VWP/S SHOW 50 KT LLJ CENTERED OVER ERN OK...WITH
   THE EXIT REGION FOCUSED OVER SRN KS. RAOBS AT 00Z INDICATE A ZONE OF
   ROBUST LOW-LEVEL MOISTURE RETURN OCCURRING OVER THE
   REGION...OVERLAYED BY STEEPENING MIDLEVEL LAPSE RATES. COMBINATION
   OF STRENGTHENING MESOSCALE ASCENT AND DESTABILIZATION IS AIDING IN
   THUNDERSTORM DEVELOPMENT OVER PORTIONS OF SRN KS. THESE STORMS WILL
   MOVE EWD THROUGH THE NIGHT...PERHAPS ENTERING WRN MO TOWARD 12Z.
   GIVEN MUCAPE VALUES FROM 1000-2000 J/KG AND EFFECTIVE BULK SHEAR IN
   EXCESS OF 50 KT/EFFECTIVE SRH NEAR 200 M2 S-2 MAY LEAD TO ELEVATED
   SUPERCELL DEVELOPMENT...POSING A THREAT FOR LARGE HAIL.
   
   ..GARNER.. 05/28/2011
   
   
   ATTN...WFO...SGF...EAX...TOP...ICT...DDC...
   
   LAT...LON   37099461 37169933 37550001 38319984 38999834 39119455
               38639328 37659329 37099461