<pre>ACUS11 KWNS 280843 SWOMCD
Mesoscale Discussion 0058 NWS Storm Prediction Center Norman OK 0242 AM CST Mon Jan 28 2019
Areas affected…Southeast WI…Northern IL…Western Lower MI
Concerning…Heavy snow
Valid 280842Z – 281245Z
SUMMARY…Heavy snowfall will continue across southeast WI and northern IL, eventually spreading northeastward into western Lower MI.
DISCUSSION…Heavy snowfall (i.e. +SN and 1/4 mi visibility) has been reported at numerous locations across southeast WI and northern IL during the past few hours. Both RFD and MKE explicitly reported over 1" in the past hour. Expectation is for this heavy snowfall to continue gradually shifting eastward, with the highest snowfall rates occurring along the western edge of the precipitation shield where warm-air advection/frontogenesis is the strongest. Snowfall rates will generally be around 1"/hr but isolated instances of rates of 2"/hr are possible.
Pivoting of this clipper system will result in an eastward/northeastward translation of the elevated frontogenesis over the next few hours with a resulting expansion of the precipitation shield into western Lower MI. Snowfall rates around 1"/hr are possible in this region beginning around 10-11Z.
..Mosier.. 01/28/2019
…Please see www.spc.noaa.gov for graphic product…
ATTN…WFO…APX…IWX…GRR…GRB…LOT…MKX…DVN…
LAT…LON 42689009 43758911 44348613 43488483 42418494 41818589
41588676 41248915 41839004 42689009 </pre>
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