MESOSCALE DISCUSSION 1542
   NWS STORM PREDICTION CENTER NORMAN OK
   0254 PM CDT THU JUL 19 2007
   
   AREAS AFFECTED...SERN LOWER MI INTO NRN OH
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 191954Z - 192130Z
   
   POTENTIAL FOR LOCALLY DAMAGING WINDS AND/OR MARGINALLY SEVERE HAIL
   WILL EXIST WITH MOST INTENSE STORMS ALONG COLD FRONT.  A WW IS NOT
   ANTICIPATED.
   
   AN APPARENT SUPERCELL HAS RECENTLY EVOLVED WITHIN A LARGER CLUSTER
   OF TSTMS SITUATED ALONG PRIMARY COLD FRONT SURGING SEWD.  THIS STORM
   WAS LOCATED NEAR THE INTERSECTION OF OAKLAND...LIVINGSTON AND
   WASHTENAW COUNTIES IN SERN LOWER MI AS OF 1940Z WITH A GENERAL
   MOTION OF 300/40-45 KT.  LOCALLY STRONGER HEATING/DESTABILIZATION
   HAS OCCURRED ALONG FRONT OVER SRN LOWER MI WHERE TEMPERATURES HAVE
   WARMED INTO THE LOWER/MID 80S.  HOWEVER...DOWNSTREAM AIR MASS ACROSS
   NRN OH REMAINS RELATIVELY COOL WITH TEMPERATURES IN THE MID 70S.
   
   STORMS COINCIDENT WITH COLD FRONT WILL LIKELY CONTINUE SEWD INTO NRN
   OH LATER THIS AFTERNOON INTO EVENING DRIVEN BY STRONG...DEEP LAYER
   FORCING FOR ASCENT AHEAD OF INTENSE VORTICITY MAXIMUM DIGGING SEWD
   THROUGH LOWER MI.  LOCALLY DAMAGING WINDS AND SOME HAIL WILL BE
   POSSIBLE WITH THE MORE INTENSE STORMS...HOWEVER A MORE WIDESPREAD
   SEVERE THREAT MAY BE LIMITED BY THE MARGINAL INSTABILITY.
   
   ..MEAD.. 07/19/2007
   
   
   ATTN...WFO...CLE...DTX...IWX...GRR...
   
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