textproduct: Milwaukee/Sullivan

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.