textproduct: Milwaukee/Sullivan

KEY MESSAGES

- Chances for a wintry mix of snow and rain (10-30%) possible Thursday into Friday. - Milder end to the week with highs in the 30s Thursday and Friday.

- Additional chances for snow (~20%) Saturday night into Sunday.

UPDATE

Issued 615 AM CST Tue Feb 3 2026

The forecast remains precisely on track with short term discussion. The overnight light snow chances for far southern WI have ended, and the sun will rise on mostly clear skies.

Sheppard

SHORT TERM

Issued 1206 AM CST Mon Feb 2 2026

Today through Wednesday:

Shortwave will exit to the southeast into early this morning, with any lingering snow showers exiting to the southeast as well. For the remainder of tonight, expect clearing skies from north to south and temperatures falling into the single digits where skies clear earliest and lows in the low teens near Lake Michigan and in far southern Wisconsin where clouds clear more slowly. With very light northerly winds, expect wind chills near the air temperatures.

High pressure then dominates through today and tonight. Expect light northerly winds, highs in the low 20s, and generally clear skies today. A few clouds may develop during the afternoon, with scattered high cloud cover expected to develop overnight as high pressure exits. Expect overnight lows in the low single digits as winds calm and skies remain clear in the lower levels of the atmosphere.

As high pressure migrates into the central to southern Plains Wednesday, winds will remain light but shift westerly. Expect highs in the mid 20s and lingering high clouds.

MH

LONG TERM

Issued 1206 AM CST Mon Feb 2 2026

Wednesday night through Monday:

A low pressure system pivoting through the northern Canadian Prairies will bring a weak front through the area Wednesday night into Thursday morning, potentially bringing chances (20 to 30 percent) for snowfall to central portions of Wisconsin. As low pressure hooks into the Hudson Bay, expect southwesterly flow to dominate the pattern. Confidence is increasing that high temperatures rise above freezing in many regions on Thursday with stiff WAA throughout the day.

A strong shortwave traversing from northern Alberta over the northern edges of the central Plains high pressure system on Thursday will combine with the trailing frontal boundary from the Hudson Bay low and create the next potential for precipitation across southern Wisconsin Thursday night into Friday. Modeling is in good agreement for measurable precipitation across all of southern Wisconsin, but with a warm airmass in place ahead of this system (highs in the mid-30s on Friday), mixed precipitation of rain to snow is possible. As this shortwave exits into Friday afternoon and strong arctic high pressure builds into the northern Plains, expect gusty northwesterly winds to develop across the region. Lows Friday night are expected to be in the low teens to upper single digits.

A more active pattern is expected to persist through early next week, with additional clipper systems Saturday night into Sunday, and perhaps again into Tuesday. Confidence in exact placement and timing of these weak, fast-moving systems remains low at this time. However, with shifts between warm sector and cold sectors in these systems southern Wisconsin looks to remain in the slightly above average temperature category through the weekend.

MH

AVIATION

Issued 615 AM CST Tue Feb 3 2026

VFR and dry weather expected to persist through the TAF period, with mostly clear skies today and scattered high altitude clouds tonight. A brief period of broken MVFR ceilings (around 3,000 ft) cannot be ruled out towards east-central WI over the next few hours as scattered to broken lake effect clouds (from Lake Superior) drift inbound on the light northerly surface wind field.

Sheppard

MARINE

Issued 1206 AM CST Mon Feb 2 2026

Northwesterly winds will gradually diminish tonight into early Tuesday as high pressure builds over northern Minnesota. Expecting high pressure to weaken slightly as it moves overhead Tuesday night into Wednesday, bringing light winds to the Lake. High pressure will slide south into Wednesday night into Thursday, as low pressure progresses eastward into Hudson Bay. Expect winds to shift southwesterly into Thursday morning, increasing and becoming gusty Thursday afternoon through Thursday night ahead of a cold front. Cold front will shift winds back to northwesterly, and will likely bring a period of gales Friday into Friday night. Winds diminish into Saturday morning as high pressure builds back into the region, but a clipper system developing Saturday night into Sunday will allow winds to increase and shift back to westerly.

MH

MKX WATCHES/WARNINGS/ADVISORIES

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