SPC MD 58



MD 0058 CONCERNING HEAVY SNOW FOR SOUTHEAST WI…NORTHERN IL…WESTERN LOWER MI

MD 0058 Image


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 

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