606
FXUS63 KGRB 161158
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
558 AM CST Fri Jan 16 2026

Updated aviation portion for 12Z TAF issuance

.KEY MESSAGES...

- Winter Weather Advisory in effect for portions of the area,
  until 8 AM over central Wisconsin, until 11 AM over northeast WI
  except the lakeshore counties which is in effect until 1 PM. A
  band of snow is expected to produce 1-3 inches of snow this
  morning in the advisory area.

- The chances of snow continue this afternoon through Saturday.
  The highest chances (40-70%) are on Saturday across central
  and east-central WI and across the far north.

- Bitterly cold temperatures arrive late in the weekend and early
  next week, with a 50-90% chance of wind chills colder than 20
  below zero on Monday and Tuesday mornings.

- A clipper system will bring another round of snow (60-80%) on
  Sunday and potentially another during the middle of next week.
  Each system will bring the potential for an accumulating
  snowfall and hazardous travel conditions.

&&

.DISCUSSION...
Issued at 402 AM CST Fri Jan 16 2026

Snow blossomed across western Wisconsin and moved into central and
northeast WI overnight. Latest observations indicated the
visibilities dropped below one mile, with Wausau down to 1/2 mile.
The latest model guidance and bufkit soundings indicated an
increase in snowfall amounts from the overnight period through
noon today, with many areas should see 1 to 2 inches with locally
up to 3 inches possible. The snowfall, low visibilities and
slippery roads will coincide with the morning commute. Issued a
Winter Weather Advisory earlier this morning to alert of the
hazardous conditions for the morning commute. The steadier snow
will end across central WI around 14z and across northeast WI
late this morning or early this afternoon. Behind this band
of snow, subsidence behind it should bring a break in the snow
across central and east-central WI. The 06z NAM has added a new
wrinkle to the forecast this afternoon with a little more snow
depicted across the north. Additional snow showers (30-50%) will
redevelop this afternoon into tonight across central and east-
central WI with cold upper trough overhead.

For Saturday, there are two areas of focus for higher snow
chances (40-70%), the first areas is across central and east-
central WI and the second area across the far north with some help
due to lake effect snow showers. A few inches of snow are
possible. Otherwise, the active pattern continues with another
clipper system on Sunday with a 60-80% chance of snow with a few
inches of snow possible. Another clipper system is possible during
the middle of next week, but model continuity in the placement of
the system results in low chances of snow for now. Once models
converge on a solution, snow chances will probably rise at some
point.

Bitterly cold temperatures arrive late in the weekend and early
next week, with a 50-90% chance of wind chills colder than 20
below zero on Monday and Tuesday mornings. Little relief from the
cold is expected next week as temperatures are forecast to run
well below normal for mid January.

&&

.AVIATION...for 12Z TAF Issuance
Issued at 535 AM CST Fri Jan 16 2026

A band of light to moderate snow was moving across much of the
area early this morning. CIGS/VSBYs dropped into the MVFR
category with pockets of IFR conditions in the heavier areas
of snow. This band should exit northeast WI this morning into
the early afternoon. There will be a break in the snow behind
this band. The only exception is across the north where snow is
expected to linger through the afternoon. For tonight and
Saturday, there is a continued chance of light snow, with
the best chance of light snow on Saturday across central and
east-central WI and over the far north. Conditions will vary
from MVFR to VFR at times, though confidence is low when
either conditions would prevail.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 11 AM CST this morning for WIZ020-
031-037>039-048-049-073-074.

Winter Weather Advisory until 1 PM CST this afternoon for WIZ022-
040-050.

Winter Weather Advisory until 8 AM CST this morning for WIZ030-
035-036-045.
&&

$$

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

NWS GRB Office Area Forecast Discussion