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ACUS11 KWNS 281553
SWOMCD
SPC MCD 281552=20
WIZ000-MNZ000-IAZ000-282145-

Mesoscale Discussion 2278
NWS Storm Prediction Center Norman OK
0952 AM CST Sun Dec 28 2025

Areas affected...North central Iowa...southern and eastern Minnesota
and northwestern Wisconsin

Concerning...Heavy snow=20

Valid 281552Z - 282145Z

SUMMARY...Heavy snow, with rates near 1 inch per hour, is expected
to develop by midday in east central Minnesota and northwest
Wisconsin.  Occasional blizzard conditions are expected into
southern Minnesota and northern Iowa.

DISCUSSION...Gradual erosion of a warm nose (noted in the 12z MPX
sounding) will continue through the afternoon from eastern MN into
northwest WI as a result of strengthening ascent and
cooling/saturation of profiles to the northwest of a deepening
cyclone now near the IA/MO/IL border.  Near-surface cooling from
northwest-to-southeast will become more favorable for
accumulating/heavy snow from east central MN into northwest WI
within the primary deformation band, while snowfall rates will be
lower farther southwest into southern MN/northern IA.  However, a
strengthening pressure gradient and rapidly falling temperatures
into the teens/single digits will result in blowing snow and
blizzard conditions (frequent gusts 35-50 mph with visibility
reduced to 1/4 mi or less) from southern MN/northern IA through the
afternoon.

..Thompson.. 12/28/2025

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!4dUVHHhOYjrOnij81ZN41KSV7X2__PjiFVWJZiXWnWA0qKustE4eVORr9FVtusDoi6qsJw4Cp=
oonYWwNPFvEkghd0pY$  for graphic product...

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

LAT...LON   44149300 43569311 43169339 42899399 42959490 43549539
            44319536 45199483 46129356 46609234 46829155 46809116
            46409115 46039152 45179278 44709305 44149300=20


=3D =3D =3D
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