MESOSCALE DISCUSSION 1064
   NWS STORM PREDICTION CENTER NORMAN OK
   0231 AM CDT MON MAY 19 2003
   
   AREAS AFFECTED...NWRN/NCNTRL KS THROUGH ERN NEB
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 190731Z - 190930Z
   
   THREAT FOR MOSTLY HAIL EXPECTED TO PERSIST NEXT SEVERAL HOURS MAINLY
   ACROSS NWRN/N CNTRL KS THROUGH S CNTRL AND PART OF ERN NEB. A WW IS
   CURRENTLY NOT ANTICIPATED DUE TO THE EXPECTED ISOLATED NATURE OF THE
   EVENTS.
   
   SURFACE BOUNDARY EXTENDS FROM MN SSWWD THROUGH ERN NEB THEN SWWD
   THROUGH NWRN KS AND CNTRL CO. ATMOSPHERE ALONG/S OF THIS BOUNDARY
   REMAINS MODERATELY UNSTABLE WITH MUCAPES FROM 1500 TO 2000 J/KG. A
   COLD FRONT IS SURGING SEWD THROUGH SD AND WRN NEB. WV IMAGERY SHOWS
   A SHORTWAVE TROUGH MOVING NEWD THROUGH ERN CO. STORMS ARE EXPECTED
   TO CONTINUE DEVELOPING AS LARGE SCALE ASCENT ASSOCIATED WITH THE
   SHORTWAVE AND SLY LOW LEVEL JET ENHANCE LIFT ALONG/N OF THE BOUNDARY
   ACROSS NWRN KS THROUGH S CNTRL NEB. MOREOVER...THE COLD FRONT IS
   EXPECTED TO MERGE WITH THIS BOUNDARY LATER THIS MORNING...FURTHER
   ENHANCING LIFT. OTHER STORMS HAVE DEVELOPED S OF THE BOUNDARY IN
   WHAT APPEARS TO BE A WARM ADVECTION WING ACROSS N CNTRL KS. STORMS
   DEVELOPING FROM SRN NEB THROUGH NRN KS WILL BE IN CLOSER PROXIMITY
   TO GREATER ELEVATED INSTABILITY...AND CLOUD LAYER SHEAR IN THIS
   REGION IS SUFFICIENT FOR STORMS TO ROTATE. ISOLATED LARGE HAIL MAY
   ACCOMPANY THE STRONGER STORMS.
   
   ..DIAL.. 05/19/2003
   
   
   ATTN...WFO...OAX...TOP...ICT...GID...LBF...DDC...GLD...
   
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