MESOSCALE DISCUSSION 1273
   NWS STORM PREDICTION CENTER NORMAN OK
   0430 PM CDT MON JUN 09 2003
   
   AREAS AFFECTED...SRN NE...NRN KS
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 092130Z - 092230Z
   
   A WW WILL BE ISSUED SHORTLY.
   
   LATEST VISIBLE IMAGERY SHOWS TCU DEVELOPING ALONG DRYLINE FROM WRN
   NEBRASKA INTO NWRN KS.	VERY STRONG INSTABILITY EXISTS E OF THE
   DRYLINE WITH MLCAPES OF 3000-3500 J/KG.  BELT OF MODERATE MID LEVEL
   FLOW ALOFT ATOP STRONG 25-35 KT SLY LLJ WILL COMBINE WITH STRONG
   INSTABILITY TO PRODUCE SUPERCELLS PRODUCING VERY LARGE HAIL.  DEGREE
   OF INSTABILITY...STEEP LOW LEVEL LAPSE RATES...AND SURFACE T/TD
   SPREADS LESS THAN 20 F SUGGEST A FEW TORNADOES WILL BE POSSIBLE AS
   WELL.  LOWERING LCLS ALONG WITH STRENGTHENING LOW LEVEL SHEAR
   PROFILES MAY ENHANCE TORNADO THREAT LATER IN THE PERIOD.
   
   ..JEWELL.. 06/09/2003
   
   
   ATTN...WFO...ICT...GID...LBF...DDC...GLD...
   
   38810156 39950157 40550120 40369808 38969824