MESOSCALE DISCUSSION 1675
   NWS STORM PREDICTION CENTER NORMAN OK
   1254 PM CDT MON JUL 07 2003
   
   AREAS AFFECTED...PORTIONS OF CENTRAL-ERN WI AND CENTRAL U.P. OF MI
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 071754Z - 071900Z
   
   WW MAY BE REQUIRED ACROSS PORTIONS OF CENTRAL AND ERN WI INTO
   CENTRAL U.P. OF MI IN THE NEXT 1-2 HOURS.
   
   17Z SURFACE ANALYSIS SHOWS A PRE-FRONTAL SURFACE TROUGH EXTENDING
   FROM THE CENTRAL U.P. OF MI SSWWD ACROSS ERN WI FROM 30 E AUW TO
   JUST WEST OF MSN TO FAR NWRN IL...WHILE A COLD FRONT EXTENDED FROM
   THE KEWEENAW PENINSULA SWWD THROUGH NWRN WI TO SOUTH CENTRAL MN. 
   VIS IMAGERY SHOWS SOME CU DEVELOPING IN THE VICINITY OF THE SURFACE
   TROUGH...WHERE SKIES CLEARED THIS MORNING ALLOWING FOR AIR MASS
   DESTABILIZATION.  STRONG DEEP LAYER SHEAR OVER MUCH OF THIS REGION
   SHOULD SUSTAIN UPDRAFTS/CONVECTIVE DEVELOPMENT WITH SUPERCELLS
   LIKELY AS THE AIR MASS CONTINUES TO DESTABILIZE ALONG AND EAST OF
   THE EWD MOVING COLD FRONT.
   
   ..PETERS.. 07/07/2003
   
   
   ATTN...WFO...MQT...GRB...MKX...ARX...
   
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