textproduct: Milwaukee/Sullivan

KEY MESSAGES

- Light snow this afternoon and evening, especially along and south of I-94.

- Much colder Wednesday night through Thursday night.

- Several chances for light snow through mid to late week, though with low confidence on details.

SHORT TERM

Issued 225 AM CST Mon Dec 1 2025

Today through Tuesday:

Several hours of mostly clear skies and light winds allowed temperatures to drop sharply in many locations early this morning, with a few spots dropping to or below zero. High clouds are beginning to move in from the south, and expect temperatures to even out and perhaps rise a few degrees through sunrise in response to the increased cloud cover.

A shortwave moving across the lower Missouri Valley will bring a period of light snow to the area starting this afternoon and continuing into this evening. Amounts will range from 1-2 inches near the Illinois state line to around an inch across the I-94 corridor, to just a trace toward central Wisconsin. Snow is expected to end by mid evening.

Quiet conditions are expected tonight, with lows falling into the single digits to around 10 above. If clouds clear faster than expected, temperatures could end up colder than forecast.

Quiet weather is expected on Tuesday, with highs in the mid 20s.

Boxell

LONG TERM

Issued 225 AM CST Mon Dec 1 2025

Tuesday night through Sunday:

The next system of note will move through the area later Wednesday into Thursday, with a cold front bringing much colder temperatures to the area Wednesday night, when lows are expected to fall below zero in most locations. A steady northwest breeze will result in wind chills around -15. Some light snow is also possible with the frontal passage, though the chance for meaningful accumulation is low at this time.

Highs Thursday are only expected to make it into the low teens, with lows Thursday night around or below zero.

Extended guidance is suggesting a fairly active period of northwest flow over the region into and through the weekend, though with high uncertainty with any particular shortwave passage. Overall, this pattern favors at or below average temperatures, with several chances for additional light snow.

Boxell

AVIATION

Issued 225 AM CST Mon Dec 1 2025

Patchy ground fog/freezing fog will occur through sunrise this morning. Visibilities will vary considerably over space and time.

Light snow is then expected to impact the terminals this afternoon and evening. IFR visibility is expected, at least on an occasional basis. The most widespread and steady snow is expected at Janesville and Kenosha, with lighter activity with northward extent. Snow should end from west to east during the mid evening hours.

Winds today will be light from the south and southwest, turning westerly tonight.

Boxell

MARINE

Issued 225 AM CST Mon Dec 1 2025

Light and variable winds this morning will turn southerly by this afternoon as high pressure moves into the Northeast. Light west to southwest winds are expected late tonight and Tuesday as another area of high pressure moves through the Ohio Valley.

A strong cold front will move across the lake Wednesday and Wednesday night. Gusty winds are expected, though for now, they are expected to remain just below gale force. Very cold air with this system will result in a risk for freezing spray Wednesday and Thursday.

Boxell

MKX WATCHES/WARNINGS/ADVISORIES

WI...None. LM...None.