MESOSCALE DISCUSSION 0095
   NWS STORM PREDICTION CENTER NORMAN OK
   0911 AM CST WED JAN 30 2013
   
   AREAS AFFECTED...A LARGE PART OF WI...CNTRL/ERN UPPER PENINSULA OF
   MI...NWRN LOWER MI
   
   CONCERNING...HEAVY SNOW 
   
   VALID 301511Z - 302115Z
   
   SUMMARY...AN AREA OF SNOW WITH EMBEDDED BANDS CONTAINING SNOWFALL
   RATES TO 1 IN/HR WILL SHIFT NEWD THROUGH THIS AFTERNOON.
   
   DISCUSSION...REGIONAL MOSAIC RADAR IMAGERY DEPICTS A LARGE SHIELD OF
   PRECIPITATION ADVANCING NEWD FROM NERN IA AND EXTREME SERN MN INTO
   WI. THIS ACTIVITY LIES WITHIN A NNE/SSW-ORIENTED DEFORMATION ZONE
   PER RECENT WATER VAPOR IMAGERY. THIS ZONE...AND ACCOMPANYING
   FRONTOGENETIC CIRCULATIONS...ARE FORECAST TO EXTEND NEWD WITH TIME.
   AS SUCH...THIS ACTIVITY -- MUCH OF WHICH IS SNOW -- WILL SHIFT NEWD
   ACROSS PARTS OF WI FOR THE REST OF THIS MORNING. THE HEAVIER SNOW
   WILL LIKELY ENTER THE CNTRL/ERN UPPER PENINSULA OF MI AND NWRN LOWER
   MI BY EARLY AFTERNOON. SNOW WILL TAPER OFF FROM SW TO NE FROM MID TO
   LATE AFTERNOON. THE STRENGTH OF THE ASCENT THROUGH SATURATED
   DENDRITIC GROWTH ZONES ALOFT WILL LIKELY SUPPORT EMBEDDED SNOWFALL
   RATES TO 1 IN/HR.
   
   ACROSS NWRN PARTS OF LOWER MI...MIXED PRECIPITATION -- INCLUDING
   SLEET AND/OR FREEZING RAIN -- MAY INITIALLY OCCUR THROUGH THIS
   MORNING...AS THE GAYLORD 12Z RAOB INDICATES AN ELEVATED WARM LAYER
   WITH A MAX TEMPERATURE AROUND 3C NEAR 850 MB. HOWEVER...AS THE LOWER
   TROPOSPHERE COOLS...SNOW WILL BECOME THE PREDOMINANT PRECIPITATION
   TYPE BY THIS AFTERNOON WITH RATES TO 1 IN/HR POSSIBLE.
   
   ..COHEN.. 01/30/2013
   
   
   ATTN...WFO...APX...MQT...GRB...MKX...ARX...
   
   LAT...LON   46618451 45798416 44698564 43468802 42798958 42959073
               44029102 44989037 46148876 46538707 46618451