254
FXUS63 KGRB 291940
AFDGRB

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

Forecast discussion for routine afternoon forecast issuance

.KEY MESSAGES...

- Winter weather advisory remains in effect across far northern
  and eastern Wisconsin for blowing/drifting snowfall. Would
  expect headlines to end as winds decrease this afternoon.

- A clipper system brings light snow on Tuesday. 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
  Thursday morning and 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 18Z TAF Issuance
Issued at 1133 AM CST Mon Dec 29 2025

Strong winds will remain in place for the early afternoon in the
wake of the departing winter storm. Periodic gusts up to 25-35
knots will likely keep blowing and drifting snow in place across
the region, which will hamper visibility for early in the TAF
period. Ceilings remain VFR for the early afternoon, but some
clearing will work its way in by the evening, which should bring
in some VFR ceilings for the overnight period.

The next round of snow showers is expected to arrive around midday
tomorrow, which will again feature some limited visibility and
lower ceilings to MVFR to start. Fortunately, this next system
should have significantly lower snow accumulations in store for
us.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 4 PM CST this afternoon for WIZ005.

Winter Weather Advisory until 3 PM CST this afternoon for
WIZ011>013-038-039-048-049-073-074.

Winter Storm Warning until 6 PM CST this evening for WIZ022.

Winter Weather Advisory until 6 PM CST this evening for WIZ040-
050.
&&

$$

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

NWS GRB Office Area Forecast Discussion