NWS-Green Bay Forecast Discussion

						FXUS63 KGRB 271940
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
140 PM CST Tue Jan 27 2026

Forecast discussion for routine afternoon forecast issuance

.KEY MESSAGES...

- Unseasonably cold temperatures continue through the work week
  with overnight and early morning wind chills generally 10
  below to 25 below zero.

- Gradually moderating temperatures over the weekend into early
  next week trending back closer to seasonal averages in the 20s.

&&

.DISCUSSION...
Issued at 119 PM CST Tue Jan 27 2026

Today-Friday: Mainly Dry and Continued Cold

Some light lake effect snow showers/flurries across far northern
Wisconsin will taper off late this afternoon/early this evening as
winds back westerly and diurnally induced cumulus clouds
dissipate.

Northwest flow aloft will continue over the next several days with
broad surface high pressure centered across the plains keeping
Wisconsin under cold low-level northerly flow. As a result, little
improvement in temperatures will occur through the rest of the work
week with highs remaining in the single digits and teens above zero
and lows in the single digits and teens below zero. Wind chills may
dip near Cold Weather Advisory thresholds at times during the
overnight/early morning hours with low to medium (30-70%)
probabilities for wind chills reaching 25 below over central and
north-central Wisconsin overnights through Thursday night and 20
to 50 percent probabilities for 20 below zero wind chills into the
Fox Valley and far northeast Wisconsin.

For tonight, wind chills may briefly hit advisory criteria for a
short time, especially across north-central Wisconsin. However,
the forays into this territory are expected to be short lived and
not expected to be ubiquitous. Therefore, will hold off on
headlines for tonight into Wednesday morning.

With precipitable water values remaining in the 10th to 20th
percentiles relative to climo, the pattern favors mainly dry
conditions. A few flurries/snow showers could not be ruled out with
any shortwave trough passages. Lake effect snow showers may impact
parts of north-central Wisconsin at times with low chances for
lake effect snow showers along parts of the western Lake
Michigan shoreline towards Friday as low-level winds turn
northerly with strong high pressure nosing south from southern
Canada.

Saturday-Monday: Slowly Moderating Temperatures

As the broad high pressure system passes southeast over the weekend
and mid-level heights rise with warm advection, there remains a
consistent signal for temperatures to gradually rebound over the
weekend into early next week. Chances for any significant
precipitation remain low into next week, with some low (20-40%)
snow chances by Sunday/Monday with modest moisture return and warm
air advection associated with a clipper system tracking through
the western Great Lakes.

&&

.AVIATION...for 18Z TAF Issuance
Issued at 1101 AM CST Tue Jan 27 2026

Post-frontal northwest winds will gust up to 30 kts early this
afternoon before gradually diminishing later this afternoon and
evening. Satellite and METAR observations indicate a SCT/BKN
MVFR/VFR stratus deck is in place across the region and linger
through the afternoon. Some flurries/snow showers may occur with
lower stratus, particularly over north-central Wisconsin, with
local visibility reductions due to lake effect snow. Skies will
scatter out this evening as winds ease to 10 to 15 knots while
backing to a westerly direction.

&&

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

&&

$$

DISCUSSION.....Kurimski
AVIATION.......Kurimski