Storm Prediction Center Mesoscale Discussion 264

   Mesoscale Discussion 0264
   NWS Storm Prediction Center Norman OK
   0425 AM CDT Mon Mar 16 2026

   Areas affected...Parts of eastern WI and Upper MI

   Concerning...Heavy snow 

   Valid 160925Z - 161430Z

   SUMMARY...A swath of heavy snow with rates around 1 inch per hour
   are expected through the morning hours.

   DISCUSSION...Mosaic radar and satellite imagery show an increasingly
   defined deformation zone and inferred strong ascent evolving in a
   north-south corridor extending from parts of Upper MI across eastern
   WI. Here, the GRB 06Z sounding sampled a cold and deeply saturated
   profile, which combined with the strong ascent, will promote heavy
   snowfall rates of 1 to locally 2 inches per hour through the morning
   hours. Additionally, strong surface winds may lead to areas of
   blowing snow and reduced visibility.

   ..Weinman.. 03/16/2026

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

   ATTN...WFO...APX...MQT...GRB...MKX...

   LAT...LON   43308933 43818944 45628889 46468848 46878784 46888693
               46678579 46278578 45488664 44618732 43878772 43298809
               43078874 43308933