NWS-Green Bay Forecast Discussion

						FXUS63 KGRB 292112
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
312 PM CST Thu Jan 29 2026

Forecast discussion for routine afternoon forecast issuance

.KEY MESSAGES...

- Wind chills near 10 below to 25 below late tonight and Friday
  morning. Temperatures trend towards normal next week.

- Besides non-impactful light snow showers or flurries at times
  through Friday, the next chance for widespread snow (20-50%)
  arrives Sunday afternoon into early Monday.

&&

.DISCUSSION...
Issued at 310 PM CST Thu Jan 29 2026

Temperatures...Air temperatures once again fall below zero
tonight, with lows ranging from about 0 to 10 below. North winds
around 5 to 10 mph will make for wind chills of 10 to 25 below
late tonight into Friday morning. Forecast stays above criteria
for any cold weather headlines, so there are no plans for
issuance. The coldest of this arctic air departs Friday, leading
to moderating temperatures for the rest of the forecast period.
Readings will be near normal for most of next week, with highs in
the 20s, and lows in the single digits and teens.

Snow...Light snow and flurries have been falling out of low
clouds across northern Wisconsin this afternoon. Accumulations up
to a couple tenths expected from this snow, mainly in far north-
central WI. Obs show some brief visibility reductions to 3 to 5
miles at times, otherwise impacts will be minimal.

The other snow concern for tonight is a lake effect snow band over
Lake Michigan. Still high uncertainty in exactly where and if this
band will move on shore, but CAMs showing a few hours of easterly
winds over the lake, so continue to keep PoPs across mainly
Kewaunee and Manitowoc counties late tonight into Friday morning.
Snow amounts around 1 inch or less are the most likely outcome,
but some place right near the shore could see up to 2 inches. An
onshore snow band will clear out by mid to late morning Friday as
winds return to the N/NW.

Dry weather and sunshine are expected for Saturday, followed by
increasing clouds Sunday morning ahead of a clipper system. The
next opportunity for snow is Sunday afternoon through Sunday night
from this clipper, with an ~30% probability to get 1 inch of
snow.

&&

.AVIATION...for 18Z TAF Issuance
Issued at 1228 PM CST Thu Jan 29 2026

Mainly VFR flying conditions across the area early this afternoon
with mostly clear skies from central into east-central WI. Low
clouds across the north are mainly above 3kft, but some lower MVFR
bases are in the mix in spots. Guidance is struggling with the
current sky conditions, leading to lower confidence in numerical
guidance going forward. Relied more so on current obs and satellite
trends. Area of low clouds across northern WI will continue to
migrate south this afternoon, but expect mainly VFR conditions to
prevail. Some flurries or light snow may be possible in these
clouds, any impacts would be limited to brief vsby drops.

A lake effect snow band is expected over Lake Michigan tonight
into Friday morning. It is expected to approach MTW, but it
remains unclear if it will move far enough west to bring lower
flying conditions. Clouds look to scatter out this evening and
overnight.

&&

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

&&

$$

DISCUSSION.....KLJ
AVIATION.......KLJ