Mesoscale Discussion 0352
   NWS Storm Prediction Center Norman OK
   1238 PM CDT Sun Apr 12 2020

   Areas affected...Portions of southeast Minnesota and northwest
   Wisconsin

   Concerning...Heavy snow 

   Valid 121738Z - 122045Z

   SUMMARY...Moderate to heavy snow is expected to continue through the
   afternoon across portions of the Upper Midwest. Snowfall rates of 1
   to 1.5 inches per hour are expected.

   DISCUSSION...A 996 mb surface low is analyzed southeast of Kansas
   City, MO at 17Z with a warm front extending northeastward to near
   Madison, WI. Strong northerly surface winds 20 to 30 knots are
   supplying a continuous supply of cold air northwest of this cold
   front. This has proven sufficiently cold for heavy snow across
   portions of Nebraska and northwest Iowa this morning. The area of
   strong frontogenesis responsible for this heavy snow has started to
   shift northeastward across southeast Minnesota and northwest
   Wisconsin with a subsequent increase in snowfall rates. These rates
   will continue to increase through the afternoon as frontogenesis
   strengthens.

   Snowfall rates are expected to be mostly around 1 inch per hour.
   Localized rates near 2 inches per hour are possible under the
   heaviest bands, but near freezing surface temperatures and
   relatively warm spring soil temperatures will likely limit the
   accumulation rate somewhat. 

   Heavier snowfall rates are expected to shift northeastward into
   northeast Wisconsin and the western UP of Michigan after 00Z.

   ..Bentley.. 04/12/2020

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

   ATTN...WFO...MQT...GRB...DLH...ARX...MPX...DMX...FSD...

   LAT...LON   45169089 45778997 46228949 46479016 45899183 44539477
               44339510 43979483 43479423 43569352 44039261 45169089