430
FXUS63 KGRB 300448
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
1048 PM CST Mon Dec 29 2025

Updated aviation portion for 06Z TAF issuance

.KEY MESSAGES...

- A clipper system brings next round of fluffy light snow late
  Tuesday morning through Tuesday afternoon. An inch or less is
  likely for most, with locally higher amounts closer to two
  inches for a few areas in eastern Wisconsin.

- Wind chills as cold as 15 to 25 below zero are possible New
  Years Eve night into Thursday morning and again Friday morning.

&&

.DISCUSSION...
Issued at 133 PM CST Mon Dec 29 2025

Conditions across the area have been slowly improving in the wake
of the strong wintry system that crossed the area overnight. Winds
that remained quite strong this morning are expected to drop off
fairly quickly over the afternoon as the pressure gradient loosens
over the area, which will help reduce any lingering blowing and
drifting snow. Once the winds decrease, would expect to be able
to drop the remaining winter headlines later this afternoon and
evening.

Quieter conditions then return to the region for the overnight
period as some clearing moves into the area. With fresh snow and
clear skies, a colder night once again lies ahead for the region,
with low temperatures in the single digits to low teens. Tuesday
morning wind chill readings will likely be between zero and ten
below.

The next clipper system will be in the works for Tuesday afternoon
and evening. With limited moisture and a fairly cold airmass in
place, additional snow will be somewhat limited with this next
clipper. Most of the area will likely see an inch or less of
snowfall, with a few locally higher totals getting closer to 2
inches. Colder air follows in the wake of the next clipper, which
will bring back a period of lake effect snowfall to the region for
the middle of the week. Temperatures Wednesday night will be
particularly cold, with wind chill readings in the morning ranging
between 15 to 25 below zero.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 1047 PM CST Mon Dec 29 2025

SCT-BKN MVFR cigs with some flurries will give way to partial
clearing overnight. Cigs will persist most of the night at RHI
though. Next round of light snow, with IFR vsby, arrives 15z-17z
over central and north-central WI, before spreading into eastern
WI by 18z. The snow will exit from west to east on Tuesday evening.
Mainly MVFR cigs with the snow, but cigs will lower to IFR central
to north-central WI as the snow begins to depart. Most locations
will see around an inch of fresh snow from late Tuesday morning
through Tuesday afternoon. Locally a few spots over eastern WI
could see around 2 inches.

&&

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

&&

$$

DISCUSSION.....Uhlmann
AVIATION.......JLA

NWS GRB Office Area Forecast Discussion