MESOSCALE DISCUSSION 1622
   NWS STORM PREDICTION CENTER NORMAN OK
   0644 AM CDT SAT JUL 05 2003
   
   AREAS AFFECTED...NRN-ERN NEB
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 051144Z - 051345Z
   
   NEW CELLS ACROSS NCNTRL NEB WILL HAVE THE POTENTIAL FOR LARGE HAIL
   AND/OR ISOLATED DAMAGING WINDS AS IT MOVES ESEWD. WW MAY BE NEEDED
   WITHIN THE NEXT 1 TO 2 HOURS ACROSS THE REGION.
   
   NEW CONVECTION IS DEVELOPING ACROSS NCNTRL NEB IN A REGION OF
   MARGINAL INSTABILITY WITH MLCAPE 500 J/KG. HOWEVER...A SHORTWAVE IS
   APPROACHING FROM WRN NEB AND LARGE-SCALE ASCENT ASSOCIATED WITH THIS
   FEATURE WILL LIKELY CAUSE THE CONVECTION TO INTENSIFY. THE
   UPPER-TROUGH IS ASSOCIATED WITH A BROAD BAND OF STRONGER MID-LEVEL
   WINDS. NELIGH NEB PROFILER SHOWS ABOUT 60 KT AT 500 MB SUGGESTING
   SOME OF THE CELLS WILL ROTATE. SLIGHTLY COOLER MID-LEVEL TEMPS IN
   THIS REGION AND STEEP LAPSE RATES WILL ENHANCE THE POTENTIAL FOR
   LARGE HAIL. ISOLATED WIND DAMAGE WILL ALSO BE POSSIBLE WITH CELLS
   THAT CAN ORGANIZE COLD POOLS.
   
   ..BROYLES.. 07/05/2003
   
   
   ATTN...WFO...OAX...GID...LBF...
   
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