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ACUS11 KWNS 281841
SWOMCD
SPC MCD 281840=20
WIZ000-MIZ000-MNZ000-290045-

Mesoscale Discussion 2280
NWS Storm Prediction Center Norman OK
1240 PM CST Sun Dec 28 2025

Areas affected...Southeast Minnesota into northwest/northern
Wisconsin

Concerning...Heavy snow=20

Valid 281840Z - 290045Z

SUMMARY...Conditions will initially be marginal for heavier snowfall
rates, but cooling temperatures at the surface and aloft will
increase potential for snowfall rates to around 1 inch per hour.

DISCUSSION...As the mid-level jet intensifies in the central Plains,
a surface low continues to deepen in northern Illinois. Cold air
advection is increasing within the upper Mississippi Valley in
response. Furthermore, deep-layer lift is also increasing as
evidenced by a broad area of precipitation moving into parts of
northwest/northern Wisconsin. While temperatures in some areas have
been just above freezing for most of the morning, recent surface
observations have shown decreasing temperatures/dewpoints. Dynamic
cooling within the heavier precipitation bands has also been
evident. That said, snowfall should increase through the afternoon.
Observations from Eau Claire and Hayward already show moderate
snowfall occurring. As the atmospheric profile continues to cool,
the environment should become more favorable for snowfall rates up
to around 1 inch per hour through late afternoon/early evening.

..Wendt.. 12/28/2025

...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj=
g!-bGwPnN6W_fIjPprphWLghCVIlpOuoZBrfS2l1ay-ildnAfZO8BBzdB47rHSuqx-Iqm3U6bTY=
tdmWmp9kBLbCIJQULw$  for graphic product...

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

LAT...LON   46479079 46509029 46298948 46128922 45778928 44679108
            44269186 44049236 43999277 44059292 44669282 45029257
            45429221 46059139 46479079=20


=3D =3D =3D
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