766
FXUS63 KGRB 071730
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
1130 AM CST Sat Nov 7 2026

Forecast discussion for routine afternoon forecast issuance

.KEY MESSAGES...

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

- Northwest winds may gust to 35 mph Sunday afternoon, especially
  further north.

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

&&

.DISCUSSION...
Issued at 1100 AM CST Sat Nov 7 2026

Temperatures have continued to warm into the low to mid 40s with
only mid and high clouds around the area and plenty of opportunities
for sunshine. A couple CAMs then showing weak signal for patchy
fog development late tonight, though with dry airmass in place and
sufficient mixing, think fog coverage, if any, will be held to a
minimum. Lows reading mainly in the low to mid 30s should mitigate
any concerns for slippery patches on roads, as was the case this
morning.

Dry cold front passes through the Great Lakes late tonight into
Sunday morning as surface low tracks through Ontario, shifting
winds to the northwest across the forecast area. Pressure gradient
tightens up along the back edge of the departing low during this
time, increasing wind gusts into the 25 to 35 mph range Sunday
afternoon as deep daytime mixing taps into near 40 knot winds at
850 mb. Highest gusts will be over the Northwoods.

Highs flirt with 60 degrees across most of northeast Wisconsin
into the middle of next week as warming ridge builds over the
Plains. Next frontal passage then looks to be Tuesday into
Wednesday, during which the blend introduces 15 to 20% PoPs,
mainly over the lake effect belts. Colder shot of air arrives
during this time as 850 mb temps fall to -8 to -10C, hinting at
the potential for flurries mixing in with light rain at times,
especially as we enter the season where any low stratus could
produce a few flakes. Otherwise, respectable signal (50 to 60%)
exists for below normal precipitation into the middle of the
month.

&&

.AVIATION...for 18Z TAF Issuance
Issued at 1100 AM CST Sat Nov 7 2026

Lake effect stratocu continues to stream across the Door
peninsula late this morning, though these should stay offshore
from MTW. Otherwise, mix of mid and high clouds stream over the
forecast area through tonight, with some MVFR cu mixing in this
afternoon. Brief window for improvement to VFR conditions exists
Sunday afternoon in the wake of a cold frontal passage.

LLWS develops from northwest to southeast after 00Z as 850 mb
winds increase 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 by the
end of the TAF period.

&&

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

&&

$$

DISCUSSION.....Goodin
AVIATION.......Goodin

NWS GRB Office Area Forecast Discussion