MESOSCALE DISCUSSION 0353
   NWS STORM PREDICTION CENTER NORMAN OK
   0600 PM CDT TUE MAR 31 2009
   
   AREAS AFFECTED...NERN IL AND EXTREME SERN WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 312300Z - 010000Z
   
   NARROW LINE OF CONVECTION/TSTMS HAS DEVELOPED ALONG THE LEADING EDGE
   OF A STRONG PV FILAMENT ROTATING ABOUT THE LARGE NRN PLNS CYCLONE. 
   THERE HAVE BEEN REPORTS OF BRIEF FUNNEL CLOUDS AND SMALL HAIL ASSOCD
   WITH THE LOW-TOPPED CONVECTION.  ACTIVITY WILL CONTINUE NEWD...AWAY
   FROM THE UPR 40S/LWR 50S DEW POINTS AND INTO AN AIRMASS INFLUENCED
   BY THE COLDER LAKE MI WATERS...NAMELY ACROSS SERN WI AND CNTRL/NRN
   CHICAGOLAND.  THIS WILL LIKELY RESULT IN A WEAKENING TREND. 
   THUS...THE SMALL HAIL/BRIEF FUNNEL CLOUD THREATS WILL ONLY LAST
   UNTIL AROUND 00Z AT THE LATEST.
   
   ..RACY.. 03/31/2009
   
   
   ATTN...WFO...LOT...MKX...
   
   LAT...LON   40858821 42838878 42408810 41648766 40918765 40858821