MESOSCALE DISCUSSION 0215
   NWS STORM PREDICTION CENTER NORMAN OK
   0642 PM CDT SUN MAR 08 2009
   
   AREAS AFFECTED...WI DOOR PENINSULA AND NRN LOWER MICH
   
   CONCERNING...HEAVY SNOW 
   
   VALID 082342Z - 090245Z
   
   HEAVY SNOWFALL RATES AROUND 1 INCH/HR ARE LIKELY OVER THE WI DOOR
   PENINSULA AND NRN LOWER MICH BEFORE ENDING W-E.  THE HEAVIEST RATES
   WILL PROBABLY OCCUR IN THE 00-03Z PERIOD BEFORE GRADUALLY WEAKENING
   IN THE 03-06Z PERIOD.
   
   SURFACE ANALYSIS SHOWS A 998 MB LOW INVOF MKG AND THIS FEATURE IS
   FORECAST TO MOVE ENEWD AS A POTENT SHORTWAVE TROUGH LIFTS TO THE NE
   OVER THE GRT LAKES INTO ONTARIO DURING THE LATE EVENING/OVERNIGHT
   HRS.  RADAR MOSAIC SHOWS A SW-NE ORIENTED REGION OF MODERATE
   REFLECTIVITIES...WITH AREA SURFACE OBSERVATIONS CONFIRMING HEAVY
   SNOW WITHIN DEFORMATION ZONE.  VIGOROUS UVV/S OVER AREA AS OF 00Z
   WILL QUICKLY MOVE NEWD IN ASSOCIATION WITH SYSTEM ACCORDING TO THE
   LATEST GUIDANCE...LEADING TO A DECREASING TREND IN LIFT/SUBSEQUENT
   DECLINE IN SNOWFALL RATES.  NONETHELESS...HEAVY SNOWFALL RATES WILL
   LIKELY OCCUR DURING THE NEXT 1-2 HRS BEFORE CEASING ACROSS ERN
   WI...AND THEN END FROM W-E ACROSS NRN LOWER MICH IN THE 03-06Z
   PERIOD.
   
   ..SMITH.. 03/08/2009
   
   
   ATTN...WFO...APX...GRR...GRB...
   
   LAT...LON   44458329 44118493 43868642 43948769 44458814 44908779
               45358595 45778395 45228330 44458329