SPC MD 131

MD 0131 CONCERNING HEAVY SNOW FOR SOUTHEAST MN...CENTRAL/NORTHERN WI...WESTERN U.P. OF MI

Mesoscale Discussion 0131
NWS Storm Prediction Center Norman OK
0852 PM CST Sat Feb 23 2019

Areas affected...Southeast MN...Central/Northern WI...Western U.P.
of MI

Concerning...Heavy snow 

Valid 240252Z - 240815Z

SUMMARY...Heavy snow will become widespread across the region later
tonight. Snowfall rates of 1-2" per hour will be possible.

DISCUSSION...At 0230Z, a deepening cyclone is located over southeast
IA, with a well-defined band of heavy snow to the north and west of
the low across eastern NE/western IA into southern MN. As the
cyclone tracks northeastward, heavy snow rates will develop into
portions of central/northern WI after 03Z, and eventually into the
U.P. of Michigan after 06Z. Steep midlevel lapse rates (as observed
in 00Z OAX sounding and implied by scattered lightning activity
portions of IA/northern IL/southern WI) along the leading edge of
the dry slot and intense deep-layer ascent will continue to support
convective elements within the precipitation shield and result in
heavy snow rates of 1-2" per hour to the north and west of the
cyclone track as it moves towards the Great Lakes.

..Dean.. 02/24/2019

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

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

LAT...LON   45139279 45429233 46299081 47518787 46948731 46298723
            45578786 44868871 44518952 44239023 44099087 44109137
            44109172 44189201 44399249 44689307 45139279 

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from SPC Forecast Products http://www.spc.noaa.gov/products/md/md0131.html