291
FXUS63 KGRB 061005
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
505 AM CDT Sun Sep 6 2026

Updated aviation portion for 12Z TAF issuance

.KEY MESSAGES...

- Dry conditions for the rest of the Labor Day weekend. Patchy
  fog is possible late Sunday night.

- Next chance of rain/storms late Monday night through Tuesday
  night. Stronger storms are possible Tuesday and Tuesday night.
  The Day 3 Outlook from the Storm Prediction Center has a
  Marginal Risk of severe storms across our western counties.

- Hazardous conditions for small craft expected Tuesday and
  Wednesday due to gusty winds and high waves.

- There is an increased risk of rip currents Tuesday into
  Wednesday morning at Lake Michigan beaches.

- Above normal temperatures continue into next weekend.

&&

.DISCUSSION...
Issued at 155 AM CDT Sun Sep 6 2026

A few minor concerns early this morning. The first, satellite
imagery was showing patches of low clouds/marine fog just east of
Two Rivers, and well east of Manitowoc towards mid lake. The area
was drifting westward earlier but has shown little movement of
late. The second concern is KDLH radar was showing some radar
echoes into Vilas County. Couldn`t rule out a few sprinkles over
the next few hours across north-central WI.

For today and Labor Day, skies will be partly cloudy with highs
around 80 as the stretch of above normal temperatures continue.
The normal high for this time of year is in the lower to middle
70s, just a fact that the cooler days of fall are around the
corner. Attention then turns to approaching cold front Monday
night. It appear the chances of rain won`t arrive until ate late
across north-central WI.

The Tuesday into Wednesday time frame is the period of main
concern. For marine interest, hazardous conditions for small craft
develop on Tuesday due to the gusty southerly winds and building
waves which will continue into Tuesday night. Winds will veer to
the west on Wednesday, but will still be gusty to create hazardous
conditions for small craft. If you are heading to Lake Michigan
beaches, there will be an increased risk of rip currents
Tuesday into Wednesday morning.

As the cold front moves across the region Tuesday and Tuesday
night, thunderstorms are expected to develop along and ahead of
it. Looking at some of the convective parameters, enough shear and
instability available for stronger storms. The Storm Prediction
Center Day 3 Outlook has a portion of our area, our western
counties, in a Marginal Risk of severe thunderstorms.

Thursday and Friday are expected to be dry with the next chance
of showers/storms on Friday night and Saturday. Above normal
temperatures to continue into next weekend.

&&

.AVIATION...for 12Z TAF Issuance
Issued at 503 AM CDT Sun Sep 6 2026

Patchy fog will burn off by 15z, otherwise VFR conditions
will prevail through Monday. Could be some spots late
tonight that drop below VFR due to some patchy fog.
The next chance of showers & storms will be late Monday
night into Tuesday night. Stronger storms are possible
Tuesday and Tuesday night.

&&

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

&&

$$

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

NWS GRB Office Area Forecast Discussion