MESOSCALE DISCUSSION 0722
   NWS STORM PREDICTION CENTER NORMAN OK
   1146 PM CDT SAT MAY 03 2003
   
   AREAS AFFECTED...CENTRAL-ERN NEB/NRN-ERN KS/SWRN IA/WRN MO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 228...
   
   VALID 040446Z - 040545Z
   
   THREAT FOR SEVERE STORMS WILL CONTINUE OVER CENTRAL NEB...WITH A NEW
   WW POSSIBLE EWD OVER PORTIONS OF ERN NEB/KS INTO SWRN IA/WRN MO AS
   ADDITIONAL ELEVATED STORMS DEVELOP OVER THE NEXT FEW HOURS.
   
   REGIONAL RADARS SHOW A LINE OF STRONG TO SEVERE STORMS OVER THE WRN
   PORTION OF WW 228 FROM HOOKER COUNTY NEB TO KEITH COUNTY NEB.  THESE
   STORMS WILL MOVE EWD INTO CENTRAL NEB OVER THE NEXT SEVERAL HOURS AS
   A STRONG SLY LLJ CONTINUES DESTABILIZATION ABOVE THE SURFACE.  35-50
   KT OF DEEP LAYER SHEAR WILL SUPPORT ORGANIZED STORMS WITH LARGE HAIL
   BEING THE PRIMARY THREAT GIVEN THE ELEVATED NATURE OF THESE STORMS.
   
   ADDITIONAL ELEVATED STORMS ARE DEVELOPING OVER ERN KS INTO MO IN A
   LOW-LEVEL WAA REGIME IN ASSOCIATION WITH THE STRENGTHENING SLY LLJ
   OVER THE SRN/CENTRAL PLAINS. IF THERE IS AN INCREASED TREND FOR
   SUSTAINED UPDRAFTS...THEN A NEW WW WOULD BE NEEDED FOR ERN NEB INTO
   PORTIONS OF NRN/ERN KS AND SWRN IA/WRN MO.  
   
   ..PETERS.. 05/04/2003
   
   
   ATTN...WFO...SGF...DMX...EAX...FSD...OAX...TOP...ICT...GID...LBF...GLD...
   
   40200176 41410196 42880113 42359637 40369340 37469291
   37219522 39319744