MESOSCALE DISCUSSION 0968
   NWS STORM PREDICTION CENTER NORMAN OK
   0515 PM CDT SAT JUN 02 2007
   
   AREAS AFFECTED...LOWER MI
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 022215Z - 022315Z
   
   AN UPWARD EVOLVING SQUALL LINE IS LOCATED FROM MONTCALM COUNTY TO
   EATON COUNTY IN LOWER MI.  THIS ACTIVITY HAS SHOWN A MARKED INCREASE
   OVER THE LAST HALF HOUR WITH NEWD MOVEMENT NOW APPROACHING 30 KT. 
   MUCH OF LOWER MI HAS BECOME MODESTLY UNSTABLE WITH STEEP LAPSE RATES
   AND MLCAPE ON THE ORDER OF 1500 J/KG.  UNTIL THIS AIRMASS IS
   OVERTURNED IT APPEARS SQUALL LINE WILL ONLY INCREASE IN
   INTENSITY...LIKELY BECOMING AN MCS AS IT MOVES TOWARD LAKE HURON. 
   WW WILL LIKELY BE ISSUED SHORTLY.
   
   ..DARROW.. 06/02/2007
   
   
   ATTN...WFO...DTX...APX...GRR...
   
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