NWS-Milwaukee/Sullivan Forecast Discussion

						FXUS63 KMKX 290820
AFDMKX

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
220 AM CST Sat Nov 29 2025

.KEY MESSAGES...

- Snow overspreads the area this morning, continuing into Sunday
  morning. Heaviest rates and travel impacts are expected from
  late this morning through this evening. A Winter Storm Warning
  is in effect.

- Blowing snow is a concern on Sunday as winds pick up behind
  the departing system.

- Below normal temperatures and a few chances for additional
  snow expected through the coming week.

&&

.SHORT TERM...
Issued 220 AM CST Sat Nov 29 2025

Today through Sunday:

Snow is overspreading the region from the southwest this
morning. This will continue over the next several hours as warm
advection and upper level lift increase across the area.
Snow may be just a touch later to arrive in east central
Wisconsin, but rates will pick up by mid morning.

Overall forecast expectations have not changed much over the
last 12 hours. The heaviest snowfall rates will occur late this
morning through this evening, with embedded, transient bands of
1"/hr rates moving across the area. Lake enhancement is also
still expected for those areas adjacent to Lake Michigan.

Snow will end Sunday morning from west to east, with storm total
amounts generally between 8 and 12 inches for most of the area,
with the chances of realizing the higher amounts greatest
across the east, where lake enhancement will be in play. Travel
conditions will be hazardous, particularly this afternoon into
tonight.

Heading into Sunday, blowing snow is looking like an increasing
concern, with northwest winds gusting between 20 and 30 MPH at
times. Depending on how the forecast evolves later today into
tonight, it's possible that a Winter Weather Advisory for
blowing snow may be needed on Sunday.

Boxell

&&

.LONG TERM...
Issued 220 AM CST Sat Nov 29 2025

Sunday night through Friday:

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, with chances (20-40%) for snow at times. At the surface,
polar high pressure and cold temps are expected for Mon-Tue AM
followed by swly winds and warm advection Tue afternoon into Wed
AM. A Canadian cold front will then pass late Wed afternoon or
night with cold advection and wnwly sfc winds into Thu. Another
approaching sfc trough from Canada will then bring a return of
swly winds and warm advection for later Thu into Fri. High temps
will range from the upper teens to 20s for the week with lows in
the single digits most nights.

Gehring

&&

.AVIATION...
Issued 220 AM CST Sat Nov 29 2025

Widespread snow is expected across the region through the next
24 hours. IFR to LIFR visibility is anticipated. The heaviest
snowfall will occur late this morning through tonight, where
rates may exceed 1"/hr at times. Snow will end from west to east
Sunday morning.

Winds will be from the east and southeast into this evening,
before turning northwesterly late tonight into early Sunday.
Gusty winds and blowing snow are likely on Sunday.

Boxell

&&

.MARINE...
Issued 220 AM CST Sat Nov 29 2025

Winds will increase from the southeast this morning as low
pressure around 29.8 inches tracks across KS to the south tip of
Lake Michigan into tonight. A Small Craft Advisory is in effect
for both increasing winds and building waves. For the open
waters, there will be a brief six hour window of south to
southeasterly gales late this afternoon and early evening for
the southern third of the lake. Winds will weaken below gales as
the low pressure passes the southern tip of Lake Michigan
overnight Saturday. Stronger northwesterly winds will then
develop Sunday into Sunday evening and may reach gale force as
the strengthening low pressure area moves away. Thus a Gale
Watch is in effect for Sunday and Sunday evening for the entire
open lake. High pressure will then build in later Sunday into
the start of next week with light winds.

Boxell

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...Winter Storm Warning...WIZ046-WIZ047-WIZ056-WIZ057-WIZ062-
     WIZ063-WIZ064-WIZ067-WIZ068-WIZ069-WIZ070-WIZ071-WIZ072
     until 6 AM Sunday.

     Winter Storm Warning...WIZ051-WIZ052-WIZ058-WIZ059-WIZ060-
     WIZ065-WIZ066...6 AM Saturday to 6 AM Sunday.

LM...Gale Warning...LMZ080-LMZ675-LMZ777-LMZ779-LMZ876-LMZ878...3
     PM Saturday to 9 PM Saturday.

     Gale Watch...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-
     LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779-LMZ868-
     LMZ870-LMZ872-LMZ874-LMZ876-LMZ878...6 AM Sunday to 7 PM
     Sunday.

     Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646...9 AM
     Saturday to 11 PM Sunday.

&&

$$

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