NWS-Milwaukee/Sullivan Forecast Discussion

						FXUS63 KMKX 010328
AFDMKX

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
928 PM CST Wed Dec 31 2025

.KEY MESSAGES...

- Light snow will continue through the afternoon, winding down
  northwest to southeast by early evening. Snow totals up to an
  inch are expected.

- Single digit temps and wind chills of 5 below to 15 below zero
  are expected tonight into early Thursday.

- A dusting of snow up to a half an inch will be possible
  Thursday afternoon.

&&

.UPDATE...
Issued 915 AM CST Wed Dec 31 2025

No major changes in the forecast as snow showers/flurries have
pushed out with mostly clear skies developing across the CWA.

Kuroski

&&

.SHORT TERM...
Issued 1234 PM CST Wed Dec 31 2025

Tonight through Thursday night:

Light to occasionally moderate snowfall will continue through
this afternoon, as a shortwave and potent cold front move
through the area. Snow should wind down northwest to southeast
by early this evening, with snow totals of up to an inch
expected. Breezy northwest winds are expected behind the front
this afternoon into early evening, with winds then gradually
easing tonight into Thursday as high pressure builds in from
the northwest. Skies are expected to clear out briefly as well
tonight. Additionally, temperatures will drop mid afternoon
through tonight behind the cold front, with lows in the single
digits and wind chills dropping to the -5 to -15 range later
tonight into early Thursday.

Clouds will increase Thursday morning as an area of warm
advection aloft moves into the area, with light snow possible in
the afternoon as a weak shortwave swings through. Latest models
have trended upward with precip chances, suggesting a dusting to
around a half an inch will be possible tomorrow. Bumped up
precip chances from the previous forecast and will likely need
to continue to increase these chances if models persist with
showing light snow accums. Highs will be below normal tomorrow,
likely not getting out of the teens most places.

DDV

&&

.LONG TERM...
Issued 1234 PM CST Wed Dec 31 2025

Friday through Wednesday:

High pressure will slowly move through the region Friday through
the weekend, bringing mainly dry weather to the southern
Wisconsin during this period. Some sunshine will be possible
Friday and Sunday, with more clouds likely Saturday as a weak
shortwave moves through. Below normal temps Friday will warm
back towards normal by Sunday.

Warm advection and a shortwave may bring some light snow to the
area Sunday night per latest models, with milder temps then
expected Monday through Wednesday. Passing low pressure may
bring light rain/snow chances to the area later Tuesday into
Tuesday night. Otherwise, it looks mainly dry the first half of
next week.

DDV

&&

.AVIATION...
Issued 930 PM CST Wed Dec 31 2025

Lingering MVFR CIGS in parts of western WI but otherwise
clearing skies across much of southern WI this evening. Winds
will die down tonight as higher pressure fills in. Another brief
shot of snow is expected in southern WI Thursday with a period
of low VSBYS possible as well as a brief period of MVFR CIGS but
as snow pushes out so will the CIGS and we will clear out once
again.

Kuroski

&&

.MARINE...
Issued 1234 PM CST Wed Dec 31 2025

Low pressure of 29.6 inches over Lake Huron this afternoon will
continue to head southeastward through the rest of the day, with
an associated cold front dropping through the region. Northwest
winds gusting up to 30 knots are expected into this evening
behind the front, with winds gradually easing overnight into
Thursday as high pressure builds in from the northwest. The
timing of the ongoing Small Craft Advisory still looks good.
Moderate freezing spray is expected to develop from north to
south this afternoon into this evening and continue into
Thursday morning as a colder airmass arrives behind the cold
front. West to northwest winds around 10 to 20 knots will then
prevail most of the time through the end of the week under
persistent northwest flow aloft.

DDV

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until 3 AM
     Thursday.

&&

$$

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