MESOSCALE DISCUSSION 1024
   NWS STORM PREDICTION CENTER NORMAN OK
   0349 PM CDT MON MAY 31 2004
   
   AREAS AFFECTED...MUCH OF LOWER MI
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 355...
   
   VALID 312049Z - 312145Z
   
   PARAMETERS REMAIN FAVORABLE FOR SEVERE STORMS WITH HAIL AS THE
   PRIMARY THREAT.
   
   OBJECTIVE ANALYSES SHOW STRONG DEEP LAYER SHEAR ACROSS LOWER MI
   ASSOCIATED WITH 50 KT OF SLY MID-LEVEL FLOW ON THE ERN PERIPHERY OF
   A SHORT WAVE TROUGH...WHICH EXTENDED FROM ERN WI SEWD TO SWRN
   MI/NWRN IND.  MARGINAL INSTABILITY WILL CONTINUE TO LIMIT THE AREAL
   COVERAGE OF STRONG TO SEVERE STORMS.  HOWEVER...GIVEN THE STRONG
   DEEP LAYER SHEAR AND STRONG LARGE SCALE ASCENT SPREADING NEWD ACROSS
   LOWER MI WITH THE UPPER TROUGH...LOW-TOPPED SUPERCELLS WILL REMAIN
   POSSIBLE FOR THE NEXT 2-3 HOURS.  HAIL WILL BE THE PRIMARY THREAT
   GIVEN LOW WET-BULB ZERO HEIGHTS /6000-8000 FT/...THOUGH DAMAGING
   WINDS WILL BE A THREAT AS WELL.
   
   ..PETERS.. 05/31/2004
   
   
   ATTN...WFO...DTX...APX...IWX...GRR...
   
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