NWS-Milwaukee/Sullivan Forecast Discussion

						FXUS63 KMKX 021117
AFDMKX

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
617 AM CDT Tue Jun 2 2026

.KEY MESSAGES...

- Increasingly warm and still low relative humidity days
  through Thursday.

- Increasing humidity and thunderstorm chances for late in the
  week into the weekend.


&&

.UPDATE...
Issued 615 AM CDT Tue Jun 2 2026

Previous forecast remains on track with high pressure bringing
dry conditions and light easterly winds to southern WI today.

Wagner

&&

.SHORT TERM...
Issued 1135 PM CDT Mon Jun 1 2026

Tonight through Wednesday:

Surface high pressure will build in from the north tonight and
then remain over the region through Wednesday. Skies will be
mostly clear tonight through Wednesday, with light east to
northeast winds persisting through Tuesday. Winds will become
southerly on Wednesday as the high begins to shift eastward.
High temps Tuesday will be very similar to what was observed
today, with somewhat warmer conditions likely Wednesday as the
southerly winds develop.

DDV

&&

.LONG TERM...
Issued 1135 PM CDT Mon Jun 1 2026

Thursday through Monday:

Southerly winds will persist Thursday, bringing continued above
normal temperatures. High pressure to the southeast should hold
help to keep any showers/storms west and north of the forecast
area through at least the daytime hours, with an increasing
chance for some precip overnight as the high gradually shifts
southeast ahead of an approaching trough.

Moisture is expected to increase substantially later by Friday,
with precipitable water values in the 1.5 to 1.75 inch range per
the latest ECMWF and GFS runs. This will open the door for
higher shower/storms chances Friday and Saturday with any
shortwaves that roll through during this period. Models are are
showing a weak signal for a wave Friday and then again Friday
night into Saturday, so have higher precip chances in the 50-70
percent range for this period.

Latest model runs generally show surface high pressure building
in from the northeast for Sunday into Monday, which may push the
deeper moisture southwest of the area and bring a break to the
precip chances. Temps might cool a bit for this period as the
high arrives, but overall temps will likely still be near to a
few degrees above normal.

DDV

&&

.AVIATION...
Issued 615 AM CDT Tue Jun 2 2026

VFR conditions prevail through tonight. Expect light easterly
winds with occasional periods where winds pick up this
afternoon to around 10 kt, but will be light to calm overnight
into Wednesday.

Wagner

&&

.MARINE...
Issued 1135 PM CDT Mon Jun 1 2026

High pressure around 30.4 inches over Hudson Bay will move to
Ontario and Lake Superior by early Tuesday morning, then south
over Lake Michigan for Tuesday afternoon and night. Expect light
to modest north to northeasterly winds to turn more easterly
late tonight, but back to northerly on Tuesday. Light and
variable winds are then forecast later Tuesday and Tuesday
night.

Light to modest southerly winds will then return to Lake Michigan
for Wednesday and Wednesday night as the high slowly moves east of
the region. Winds are expected to gradually increase and shift
more southwesterly for Thursday afternoon and night. Shower and
storm chances will return late week into the weekend.

DDV

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...None.
&&

$$

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