418
FXUS63 KGRB 080500
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
1100 PM CST Sat Nov 7 2026

Updated aviation portion for 06Z TAF issuance

.KEY MESSAGES...

- Dry with slightly above normal temperatures through the middle
  of next week. Warmest days will be Monday and Tuesday.

- Northwest winds may gust up to 35 mph Sunday afternoon,
  especially across northern Wisconsin.

- Turning cooler by late next week, with return of lake effect
  rain and snow showers.

&&

.DISCUSSION...
Issued at 945 PM CST Sat Nov 7 2026

A dry cold frontal passage will bring an increase in cloud cover
overnight. Behind the front winds will become northwesterly for
Sunday, and with a tightening pressure gradient and deeper mixing up
to around 850mb gusts will increase to around 25-35 mph Sunday
afternoon, strongest across northern WI, before subsiding Sunday
evening.

A brief period of high pressure Monday will keep the forecast dry
and temps a few degrees above normal before the next frontal passage
comes Tuesday into Wednesday. NBM probs continue to show 20 to 30%
PoPs, highest over the over the lake effect belts of north-central
WI as well as northern Door Co. Colder shot of air also arrives
during this time as 850 mb temps fall to -7 to -9C, hinting at the
potential for snow flurries mixing in with light rain at times.
Otherwise, respectable signal (50 to 60%) exists for below normal
precipitation and above normal temperatures into the middle of the
November.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 1100 PM CST Sat Nov 7 2026

A mix of mid and high clouds will stream over the forecast area
overnight as a dry cold front pushes through the region. These
clouds should remain above 10k ft. By Sunday morning mostly clear
skies should return over the region. A deck of MVFR status clouds
is expected to develop over Lake Superior and sink south Sunday
afternoon across north-central Wisconsin, impacting RHI.

LLWS will continue through Sunday morning with 850 mb winds
gusting to near 40 knots. Otherwise, southwesterly winds shift to
northwesterly behind the cold front Sunday morning, with gusts
increasing to around 25 to 30 knots at all terminals Sunday
afternoon. By Sunday evening winds should diminish below 10 kts.

&&

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

&&

$$

DISCUSSION.....GK
AVIATION.......Kurimski

NWS GRB Office Area Forecast Discussion