Storm Prediction Center Mesoscale Discussion 302

   Mesoscale Discussion 0302
   NWS Storm Prediction Center Norman OK
   0207 PM CDT Sun Mar 30 2025

   Areas affected...Northern Wisconsin into the Upper Peninsula of
   Michigan

   Concerning...Winter mixed precipitation 

   Valid 301907Z - 310000Z

   SUMMARY...Another round of moderate to heavy snow and sleet/freezing
   rain is expected to spread across northern Wisconsin into the Upper
   Peninsula of Michigan.

   DISCUSSION...Recent surface observations across northern WI report a
   mix of sleet/freezing rain to the west/northwest of the Green Bay,
   WI area and light to moderate snow across northern/northwest WI.
   This precipitation is expected to increase in coverage and intensity
   as it spread northeastward through early evening amid strengthening
   warm advection between 925-850 mb and within the 700 mb deformation
   zone. The steady warm advection will also maintain a warm nose
   between 1-2 km AGL that will continue to promote sleet and freezing
   rain through the afternoon. Latest guidance continues to suggest
   that freezing rain rates between 0.05 to 0.1 inch/hour are probable
   across far northeast WI into the southern areas of the U.P. A
   gradual eastward shift of the warm nose is anticipated through late
   afternoon, which should result in sub-freezing temperatures
   throughout the column. This thermodynamic trend, coupled with
   organized precipitation banding, should promote areas of moderate to
   heavy snowfall rates between 1-2 inch/hour across northern WI into
   western parts of the U.P.

   ..Moore.. 03/30/2025

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...APX...MQT...GRB...DLH...ARX...MPX...

   LAT...LON   45788479 45798560 45768645 45508720 45178788 44968863
               44928914 44958965 44969031 44989085 44999120 45309159
               45709159 46099149 46409129 46679091 46749063 46819026
               47058924 47118813 47088674 46998561 46848474 46658406
               46398371 46188349 45918341 45808351 45778417 45788479