435
FXUS63 KMKX 040253
AFDMKX

Area Forecast Discussion
National Weather Service Milwaukee/Sullivan WI
953 PM CDT Wed Sep 3 2025

.KEY MESSAGES...

- Chilly low temperatures are expected tonight, with below-
  normal temperatures continuing into this weekend.

- A round of showers is likely Thursday evening and overnight.

- Temperatures slowly warm back up early next week.

&&

.UPDATE...
Issued 948 PM CDT Wed Sep 3 2025

There is still some very light rain/sprinkles that are lingering
across central Wisconsin this evening. These areas of sprinkles
are riding along some weak mid level (roughly 700mb) lift. With
temps dropping after dark there is enough moisture to squeeze
out some sprinkles. These should gradually continue southeast
overtime eventually dissipating as transient lift pulls out of
the state. Clouds will eventually clear from north to south
across the region as high pressure clips the state.

Patterson

&&

.SHORT TERM...
Issued 312 PM CDT Wed Sep 3 2025

Tonight through Thursday night:

Clouds will decrease this evening and overnight as high
pressure centered to the south clips southern Wisconsin. Quiet
weather is expected during the day Thursday, with well below
normal high temps in the low to mid 60s. Another round of rain
will move through the area Thursday evening into Thursday night
as low pressure zips through northern Wisconsin. Models are
showing little to no instability with this round of rain, so
left out any mention of thunder. It currently looks like the
higher rainfall amounts will pass by to the north, closer to the
center of the surface low. Amounts across southern Wisconsin are
expected to be 0.25" or less.

DDV

&&

.LONG TERM...
Issued 312 PM CDT Wed Sep 3 2025

Friday through Wednesday:

High pressure will gradually build in from the northwest Friday
into the weekend under broad northwest flow. Below normal
temperatures and dry conditions are expected through this
period. Southerly low level flow will return early next week,
bringing gradually warming temperatures to southern Wisconsin.
Dry weather is likely to persist into the first half of next
week.

DDV

&&

.AVIATION...
Issued 948 PM CDT Wed Sep 3 2025

VFR conditions are expected to persist through the period. There
are some lingering sprinkles across central Wisconsin that
should end/dissipate over the next hour or so. The mid to upper
level clouds will gradually decrease and move south and east out
of the area. Mostly clear skies and light winds are expected
tonight. Winds will shift from northwest to west by daybreak.
Thursday afternoon round of VFR cumulus is likely with cloud
bases in the 4-5 kft range. West to southwest winds will become
breezy again during the afternoon and evening hours. Heading
into Thursday night winds will shift to southerly. Rain looks to
return at the end of the period for late Thursday night into
Friday morning.

Patterson

&&

.MARINE...
Issued 312 PM CDT Wed Sep 3 2025

Low pressure of 29.4 inches over southern Ontario will meander
north and then northwest tonight into Thursday while deepening
to 29.2 inches. The low will remain nearly stationary Friday,
before lifting northeast Friday night into Saturday. Breezy west
to northwest winds through tonight will become southerly by
Thursday night and then westerly by Friday morning ans a
secondary low of 29.3 inches moves through northern Lake
Michigan. This low will bring a tighter pressure gradient, with
increasing confidence in a period of gales Thursday night into
Friday morning. Thus a Gale Watch has been issued for this
period. Winds will then gradually ease later Friday into the
weekend as high pressure of 30.3 inches moves in from the
northwest.

DDV

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
WI...None.
LM...Gale Watch...LMZ080-LMZ261-LMZ362-LMZ364-LMZ366-LMZ563-LMZ565-
     LMZ567-LMZ669-LMZ671-LMZ673-LMZ675-LMZ777-LMZ779-LMZ868-
     LMZ870-LMZ872-LMZ874-LMZ876-LMZ878...1 AM Friday to 1 PM
     Friday.

     Gale Watch...LMZ643-LMZ644-LMZ645-LMZ646...1 AM Friday to 10
     AM Friday.

&&

$$

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