textproduct: Milwaukee/Sullivan

KEY MESSAGES

- A dusting of snow possible this afternoon and evening. Patchy freezing drizzle may mix in during the evening hours.

- An inch or two of snow is possible Saturday night into early Sunday. - Below normal temperatures will persist into next week, with additional rounds of light snow possible at times.

SHORT TERM

Issued 349 AM CST Fri Dec 5 2025

Today and Tonight:

A shortwave will bring some light precipitation to southern Wisconsin this afternoon and evening. Latest model soundings show fairly deep saturation once the better forcing arrives by late afternoon, with mainly snow likely initially due to plenty of saturation within the dendrite growth zone. There could be some drying out within the DGZ as the precip winds down, so left a mention of freezing drizzle in the forecast for the evening hours. The best chance for up to 0.5" of snow will be mainly north of I-94, with decreasing amounts towards the south. Temps will be somewhat milder today under southwest winds ahead of the shortwave, though still well below normal highs for early December.

DDV

LONG TERM

Issued 349 AM CST Fri Dec 5 2025

Saturday through Thursday:

High pressure will briefly move through the area on Saturday, bringing a short round of dry weather. Despite some sunshine, high temps will be even colder tomorrow behind the departed shortwave.

Another wave is expected to roll through the area Saturday night into Sunday, bringing more snow chances to southern Wisconsin. Still a fair amount of disagreement among model solutions with the strength and track of the surface low associated with this wave. Overall, the consensus of the latest models keep the track of the low and better forcing south, along with the higher precip totals. Still looks like enough lift and moisture in southern Wisconsin for an inch or two of snow. Will have to keep an eye on model trends with the surface low, as a nudge northward could bring snow totals up a bit.

High pressure will bring dry and well below normal temps to the area Monday. Additional shortwaves will be possible at times Monday night through mid-week, with quite a bit of variance among models at this time as to the the strength and track of theses systems. Overall though, it looks like below normal temps and occasionally snowy conditions will persist through the extended period.

DDV

AVIATION

Issued 349 AM CST Fri Dec 5 2025

Low level wind shear will persist through the early morning hours, winding down 12-14Z. Ceilings will remain mainly VFR today, but may briefly dip to MVFR based on upstream conditions. Much lower ceilings are then expected to move in from the northwest late this afternoon into the evening as a shortwave moves through. This wave will also bring a dusting of light snow (0.5" or less) in the afternoon and evening hours, particularly along/north of I-94. Visibilities of 3 to 5 SM will be possible with the snow. There could be some patchy freezing drizzle across southern Wisconsin during the evening hours as well. Decreasing clouds and improving ceilings are then expected Friday night into early Saturday behind the departing shortwave.

DDV

MARINE

Issued 349 AM CST Fri Dec 5 2025

Gusty southwest winds will continue today between a low pressure trough of 29.7 inches approaching from the northwest and high pressure of 30.4 inches over the northeast United States. Gale force gusts are expected to persist across the north half of the lake through the early morning hours. Small Craft Advisory conditions will persist through this evening.

Breezy westerly winds tonight will gradually ease while veering to the northwest on Saturday, as high pressure of 30.0 inches builds in from the west. Breezy northerly winds are then expected Sunday as low pressure passes by to the south and strong high pressure of 30.5 inches begins to build in from the west. More rounds of gusty winds are expected at times the first half of next week, as multiple low pressure systems move through the region.

DDV

MKX WATCHES/WARNINGS/ADVISORIES

WI...None. LM...Gale Warning...LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565- LMZ567-LMZ868 until 9 AM Friday.

Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until midnight Saturday.