NWS Milwaukee Forecast Discussion
791
FXUS63 KMKX 081205
AFDMKX
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
605 AM CST Sun Nov 8 2026
.KEY MESSAGES...
- Temperatures will return to above normal for Today through
Tuesday. Generally dry conditions are expected, with a chance
for some fog development late tonight into early Monday
morning.
- A colder airmass returns to the region later this week. There
is a potential for lake effect rain showers with some
snowflakes mixing in.
&&
.UPDATE...
Issued 605 AM CST Sun Nov 8 2026
A surface low pressure trough is lowly making its way through
southern WI this morning. Expect the modest west-southwest winds
to become west-northwest and gusty this afternoon. Gusts up to
28 mph are expected near Lake Michigan, with lower gusts
inland. With plenty of sunshine, expect high temperatures to get
into the upper 50s.
Cronce
&&
.SHORT TERM...
Issued 100 AM CST CST Sun Nov 8 2026
Today and Tonight:
Low pressure tracks east across Ontario Canada today, dragging
a cold front across WI. A southwest breeze continues predawn
this morning ahead of the front, advecting some higher
dewpoints into the region. The moist advection on these winds is
no longer expected to produce fog or low stratus clouds, likely
a combination of the high-altitude clouds and continued
southwest breeze working to keep the boundary layer from
saturating. Later this morning a cold front crosses the region,
with 20-30 mph gusts and sunny skies through the afternoon.
Winds subside tonight as a weak surface ridge passes overhead.
Inland low temps in the low 30s, slightly warmer near Lake
Michigan. Though the post cold front winds allow drier air to
return and high-altitude clouds build back into the region
tonight, the calm winds and gaps in the clouds could result in
the formation of ground fog, particularly for inland areas. Far
eastern WI will see slightly warmer low temps, as well as a
land-breeze circulation (slight offshore winds), likely reducing
fog potential.
Sheppard
&&
.LONG TERM...
Issued 100 AM CST CST Sun Nov 8 2026
Monday through Saturday:
Another low pressure system tracking east into Ontario Canada on
Monday will work with high pressure across the Lower Mississippi
River Valley to drive breezy southwest winds on Monday, with highs
in the mid to upper 50s. A weak cold front follows Monday night,
with light northwest winds and slightly warmer (around 60) high
temperatures for Tuesday.
Into Wednesday, high pressure slides southeast across Manitoba and
a deepening trough in the jet dives from the Dakotas towards the
Ohio River Valley. Low pressure develops near the southern tip of
IL in response to the trough, with both features tracking east. QG
ascent from the approaching trough coupled with some Lake Superior
boundary layer moisture could result in some light rain Wednesday
(15-30% chance). Highs in the low 50s.
As both pressure systems intensify and the low exits east, north
winds become gusty across the lake Wednesday night into Thursday.
Lake effect showers will become possible across far eastern WI at
times Wednesday night through Friday. High temperatures dive to
the 40s, with lows in the upper 20s to 30s.
Sheppard
&&
.AVIATION...
Issued 605 AM CST Sun Nov 8 2026
Steady west-southwest winds will become west-northwest by early
afternoon with gusts up to 25 kt near Lake Michigan and 20 kt
inland. Skies will remain mostly clear through tonight. Since
light winds will return tonight, patchy fog is possible early
Monday morning.
Cronce
&&
.MARINE...
Issued 605 AM CST Sun Nov 8 2026
Low pressure of 29.5 inches crossing Ontario will drag a trough
across Lake Michigan this morning and steady southwest winds will
become northwest with gusts to 30 knots by the afternoon. Winds
will diminish overnight as a ridge of high pressure around 30.1
inches moves into the region. Winds become southwesterly again on
Monday as an additional low pressure system moves through the
Canadian Prairies.
Winds will shift northwesterly Monday night as low pressure exits
into Ontario and another cold front sweeps across the Upper Great
Lakes. Winds then shift westerly Tuesday into Tuesday night
before turning northerly as low pressure deepens in the Southeast
U.S. on Wednesday. Wednesday into Thursday, expect a strong band
of lake effect snow and rain to develop north to south as low
pressure deepens to 29.4 inches as it crosses Indiana and Ohio.
Northerly gales are possible on Thursday.
The Small Craft Advisory for the gusty westerly winds is in
effect until 6 PM tonight.
Cronce
&&
.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Small Craft Advisory...LMZ643-LMZ644-LMZ645-LMZ646 until 6 PM
Sunday.
&&
$$
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