466
FXUS63 KGRB 050629
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
129 AM CDT Sat Sep 5 2026

Forecast discussion for routine morning forecast issuance

.KEY MESSAGES...

- Areas of fog, which may be locally dense with a visibility of
  1/4 mile or less, should burn off by mid-morning. Patchy fog
  is also possible late Saturday night.

- Dry conditions for Labor Day weekend. The next chance of
  rain/storms will be from Monday night through Tuesday night.

- No signs of fall like temperatures through the middle of next
  week as the stretch of above normal temperatures continue.

&&

.DISCUSSION...
Issued at 126 AM CDT Sat Sep 5 2026

Some pesky showers lingered across Door and Kewaunee counties
early this morning. A few of the meso models that picked up on
this activity after midnight has the rain ending between 3 to 5
AM. Activity should be confined to the lakeshore counties,
possibly as far west as Brown and Calumet counties.

Meanwhile, the other concern early this morning is the potential
dense fog. Enough wind and low stratus has so far prevented
dense fog to develop. With longer nights and winds may slacken
off towards sunrise, potential exists for areas of dense fog
to expand. Any fog should burn off by mid-morning.

For the Labor Day Weekend, high pressure and upper-level ridging
will build over the area today and then remain across the area
through Labor Day as the stretch of above normal temperatures
continues. Current thinking is that the MET guidance is too cool
while the MAV guidance may be a tad bit high. For highs through
Labor Day, trended toward the BCConsall guidance values. The next
chance of showers and thunderstorms will be from later Monday
night through Tuesday night as a weak cold front moves across the
area. It is too early to determine if any of the storms would
become severe. Mainly dry conditions are expected Wednesday
through Friday.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 936 PM CDT Fri Sep 4 2026

Other than an isolated shower over eastern WI through midnight,
dry conditions are expected at the TAF sites through the TAF
period. IFR/MVFR cigs will expand over the TAF sites this evening,
before dropping to LIFR/IFR overnight. The IFR cigs will be
accompanied by at least IFR vsbys due to fog. Some spots could
fall to 1/4SM as well. Conditions may be at airport minimums at
the TAF sites. Some improvement with cigs and vsbys is anticipated
by mid-morning Saturday. Low clouds will gradually scatter out
Saturday afternoon, taking longest to do so in central and north-
central WI.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

DISCUSSION.....Eckberg
AVIATION.......JLA

NWS GRB Office Area Forecast Discussion