textproduct: Milwaukee/Sullivan

KEY MESSAGES

- Light snow tapers off to flurries this morning. Gusty northwest winds will result in areas of blowing snow, impacting north to south oriented roadways.

- Below normal temperatures and periodic chances for light snow are expected through the coming week.

UPDATE

Issued 947 AM CST Sun Nov 30 2025

Surface low pressure is now over Lake Huron and accelerating to the northeast. Northwest flow on the backside of the low will maintain a broken stratocumulus deck with light snow quickly tapering off to flurries. Northwest winds will be gusty this morning into early this afternoon, with any blowing snow affecting north to south oriented roadways. Will maintain the going Winter Weather advisories to account for this lingering impact.

Temperatures will warm very little today, and then drop steadily heading into tonight as high pressure builds over the region. Lows in the single digits will be common, with areas hugging the Lake Michigan shoreline a few degrees warmer. Wind chills a few degrees either side of zero are expected tonight.

The workweek will start cold with the area being clipped by an area of light snow during the afternoon and evening. Amounts will be on the order of an inch or two (or less) but there will be at least minor impacts given the timing during the evening rush hour commute.

Gagan

SHORT TERM

Issued 232 AM CST Sun Nov 30 2025

Early this Morning through Tonight:

Light to moderate snow continues early this morning, as the mid level trough lifts through the region. Transient bands of heavier snow associated with mid level fgen, as well as pockets of increased lake enhancement and convergence, will persist for a few more hours. The bulk of the accumulating snow will end by 6 AM, though some lake enhancement may linger until closer to 9 or so.

Winds will pick up over the next few hours as the surface low pulls east, becoming rather gusty from the northwest by 7 or 8 AM. Blowing snow will be a concern today, and will likely hinder clean up efforts on some roadways. Given these impacts, a Winter Weather Advisory for blowing snow will be in effect for the entire area starting at 6 AM, after the expiration of the Winter Storm Warning. This Advisory will be in effect through noon for locations along and west of the Highway 26 corridor, and until 3 PM for locations east of there.

Skies will partially clear this evening into tonight as high pressure builds southeastward into the area. This will set the stage for a cold Monday morning, with lows tonight falling into the single digits above zero. If skies clear more than expected, a few spots could dip to around zero.

Boxell

LONG TERM

Issued 232 AM CST Sun Nov 30 2025

Monday through Saturday:

A wnwly flow aloft will prevail for the new week as a large upper low will reside over Hudson Bay into nrn Quebec, while mean shortwave troughing will be in the vicinity of the Desert SW with an upstream upper ridge in the ern Pacific Ocean. Srn WI will be between or near a series of shortwave troughs in the flow for the week. The first shortwave trough digging sewd from Canada is looking more favorable for light snow late Mon into Mon nt, especially from Madison to Milwaukee and swd. A surface ridge will then follow on Tue with swly winds developing late in the day. This is in response to a wave of low pressure that will track from srn Manitoba to sw Quebec for Tue-Wed. Its trailing Canadian cold front will then pass Wed afternoon with cold advection and wnwly sfc winds into Thu. The upper trough passage with the front will bring chances for light snow. Another approaching sfc trough from Canada will then bring a return of swly winds and warm advection for later Thu into Fri and possibly Sat. Weak shortwave trough passages will bring small chances for light snow during this time. High temps will range from the upper teens to 20s for the week with the coldest day on Thu. Lows will range from the single digits to teens, but below zero temps will be possible Wed nt inland.

Gehring

AVIATION

Issued 947 AM CST Sun Nov 30 2025

Light snow is tapering off to flurries while northwest winds will result in occasional blowing snow concerns through the mid afternoon hours. An MVFR stratocumulus deck will hang around today, lifting to low end VFR during the mid afternoon. Partial clearing is expected tonight as high pressure builds into the area. Attention then turns to a quick bout of light snow for Monday afternoon and evening bringing MVFR ceilings and visibility.

Gagan

MARINE

Issued 232 AM CST Sun Nov 30 2025

Low pressure of 29.7 inches located over Lake Michigan early this morning will rapidly lift northeastward to Lake Huron by mid to late morning while deepening to 29.6 inches, and then into Quebec by tonight. Winds will gradually ease Sunday night into Monday as high pressure around 30.6 inches builds across the Great Lakes exiting to the east Monday night.

A Gale Warning is in effect for the open waters from this morning through this afternoon. Gales will mainly be confined to the northern 2/3 of the lake, though some occasional gusts to gale force are still possible across the south.

For the nearshore waters, a Small Craft Advisory is in effect through this evening.

Boxell

MKX WATCHES/WARNINGS/ADVISORIES

WI...Winter Weather Advisory...WIZ046-WIZ047-WIZ056-WIZ057-WIZ058- WIZ062-WIZ063-WIZ064-WIZ067-WIZ068-WIZ069-WIZ070 until noon Sunday.

Winter Weather Advisory...WIZ051-WIZ052-WIZ059-WIZ060-WIZ065- WIZ066-WIZ071-WIZ072 until 3 PM Sunday.

LM...Gale Warning...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563- LMZ565-LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779- LMZ868-LMZ870-LMZ872-LMZ874-LMZ876-LMZ878 until 3 PM Sunday.

Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until 9 PM Sunday.