NWS Milwaukee Forecast Discussion
935
FXUS63 KMKX 090859
AFDMKX
Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
359 AM CDT Fri May 9 2025
.KEY MESSAGES...
- Frost expected through early this morning for most areas
inland from Lake Michigan. A Frost Advisory remains in
effect.
- Mostly dry and warm through the weekend.
- Small chances (20-40%) for showers and thunderstorms Tuesday
and Wednesday.
&&
.SHORT TERM...
Issued 359 AM CDT Fri May 9 2025
Today through Sunday:
Light winds and plenty of sunshine will prevail today under high
pressure. Temperatures will approach 70 degrees most places away
from Lake Michigan, with cooler temps near the lake as a lake
breeze develops by early afternoon. A weak cold front will then
approach tonight, dropping south through southern Wisconsin
Saturday morning. A shower or two will be possible tonight ahead
of the front, but most places are likely to remain dry.
High pressure will return for the weekend, with plenty of
sunshine and gradually warming temperatures expected. Above
normal high temps are expected away from Lake Michigan, with
highs near or even a bit below normal near the lake under
onshore winds.
DDV
&&
.LONG TERM...
Issued 359 AM CDT Fri May 9 2025
Monday through Thursday:
The upper low that will be situated over the Lower MS River Valley
this weekend will open up into a broad low on Mon, and slowly
lift newd into the Ohio River Valley for Tue afternoon. The
extended models differ a bit with the placement and timing, but
overall the low will funnel low to mid level moisture into srn WI
beginning Mon nt. Thus a warm and low humidity day still looks
good on Mon before the moisture arrives.
A relatively mild and humid airmass will then be in place for
Tue-Wed with marginal CAPE present. PVA on the nw periphery of
the upper low and moist, weakly capped conditions will likely
result in scattered showers and isold storms, greatest on Tuesday.
The increase in humidity and clouds could keep the temps down a
bit on Tue, but then increasingly warm through Thu and still
humid.
The upper low will be shifting farther ewd on Wed so possibly just
isolated coverage will occur. For Thu, the wrn USA upper trough
will be lifting newd through the nrn and central Great Plains with
the sfc low likely to be located over the nrn Great Plains to MN
with a trailing cold front to the south. It does appear much of
the shower and storm potential will hold off until Thu nt.
Gehring
&&
.AVIATION...
Issued 359 AM CDT Fri May 9 2025
VFR conditions are expected to persist today into Saturday.
Mostly clear skies and generally light winds will continue
through the day today under high pressure. Variable wind
direction this morning will become west to northwest this
afternoon, except for east to southeast winds near the lake as
a lake breeze moves inland.
An isolated shower or two will be possible tonight ahead of a
weak cold front, with winds then shifting to the north to
northeast Saturday morning as the front drops through southern
Wisconsin.
DDV
&&
.MARINE...
Issued 359 AM CDT Fri May 9 2025
High pressure will shift south across Lake Michigan and
Wisconsin today. A weak cold front will then follow the high
across Lake Michigan late tonight into Saturday morning. Light
and variable winds early today will become south to southwest
ahead of the approaching cold front this afternoon into tonight.
Gusty northerly winds behind the weak cold front can be
expected on Saturday, with Small Craft Advisory conditions
possible across the nearshore waters. The winds will return to
southerly for Sunday.
DDV
&&
.MKX WATCHES/WARNINGS/ADVISORIES...
WI...Frost Advisory...WIZ046-WIZ047-WIZ051-WIZ052-WIZ056-WIZ057-
WIZ058-WIZ059-WIZ062-WIZ063-WIZ064-WIZ065-WIZ068-WIZ069-
WIZ070-WIZ071-WIZ072 until 8 AM Friday.
LM...None.
&&
$$
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