430
FXUS63 KGRB 051035
AFDGRB

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

Updated aviation portion for 12Z TAF 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 12Z TAF Issuance
Issued at 532 AM CDT Sat Sep 5 2026

Winds remained up overnight, combined with a stratus deck
has limit the fog early this morning. There could be some
visibilities down to 1 to 3 miles for a few hours after
sunrise. IFR/MVFR CIGS will rise into the VFR category this
afternoon. East to northeast Winds of 5 to 15 knots
expected today. VFR conditions tonight, except for some
lower visibilities and CIGS due to patchy fog between 07z
and 14z Sunday. The next chance of showers and storms will
be late Monday night into Tuesday.

&&

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

&&

$$

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

NWS GRB Office Area Forecast Discussion