Mesoscale Discussion 2283
NWS Storm Prediction Center Norman OK
0553 PM CST Sun Dec 28 2025
Areas affected...Central Minnesota into northern Iowa
Concerning...Blizzard
Valid 282353Z - 290500Z
SUMMARY...Blizzard conditions are expected to gradually increase
through the evening across portions of the Upper Midwest. 30-40 mph
sustained westerly winds will coincide with increasing snowfall
rates, resulting in reduced visibility, perhaps below a quarter
mile, in some instances.
DISCUSSION...Mesoanalysis indicates that the surface low, currently
at 993 mb and located over southern Lake Michigan, is continuing to
deepen while gradually drifting to the northeast. In response to
surface low intensification is a broadening and gradual
strengthening of the west-northwesterly surface wind field within
the low's northwestern quadrant. Surface observations show
widespread 30+ mph sustained wind speeds across much of western MN
into central IA. Meanwhile deep-layer cold air advection, and the
advection of mid-level moisture around the surface low, is resulting
in a broad band of snow pivoting around the low's northwestern
quadrant. As a result, moderate to perhaps occasionally heavy
snowfall rates will coincide with the 30+ mph west-northwesterly
surface wind field, which may strengthen further in tandem with the
low. Increasingly common blizzard conditions may manifest, with
reduced visibility down to or below a quarter mile where the heavier
snow bands and wind gusts may overlap.
..Squitieri.. 12/28/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...DVN...ARX...MPX...DMX...FSD...
LAT...LON 45619391 45769447 45819518 45589575 45089579 44559551
43319451 42079333 41909267 42159195 42609141 43149124
43629149 44089188 44729280 45619391
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