NWS-Green Bay Forecast Discussion

						FXUS63 KGRB 242309
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
509 PM CST Tue Feb 24 2026

Updated aviation portion for 00Z TAF issuance

.KEY MESSAGES...

- Fast moving band of snow showers will cross the area this
  afternoon through the early evening. Although accumulations are
  largely expected to be around an inch or two, rapid reduction in
  visibility will pose a hazard to motorists.

- Friday will be the warmest day this week with >80% chance of
  highs over 40 degrees regionwide. Turning colder again this
  weekend.

&&

.DISCUSSION...
Issued at 145 PM CST Tue Feb 24 2026

Main focus of the forecast period will be on the next few hours as
the band of intense snow showers continues its way across the
area. Focused ascent at the leading edge of the cold air advection
has helped bring an almost convective look to the showers on
satellite, supporting snowfall rates up to an 1/1.5 inches per
hour and rapid reductions in visibility down to half a mile or
less at times. The forcing remains best further northwards, closer
to the upper shortwave, but some of the more intense snow bands
will also impact areas as far south as Highway 29. Accumulations
still remain relatively low however, in the range of a couple
inches for most, with the main limiting factor being the short 2
hour or less residence time at any one location. Therefore would
expect the primary impact of the snow to be hazardous travel from
rapid visibility reduction and snow covered roads. This will hold
especially true across the Fox Valley and other areas in eastern
Wisconsin, which will see the snow arrive at the beginning of the
evening commute. The snow will depart as quickly as it arrived for
most, with quiet conditions expected to quickly return this
evening.

Another system on Thursday continues to push southwards through
the period so the more impactful portion of the system will be
well south of our area. That said, the more southerly track
continues to show signs of allowing a northern clipper to graze
the area with some scattered snow showers (30-40% chance at any
one location). Accumulation potential remains minimal, with
probabilistic guidance only showing around a 10% chance of
exceeding an inch, and that only for north-central Wisconsin.

Finally, minimal changes to the Friday temperature forecast.
Guidance remains in alignment in bringing our neck of the woods
well into the warm sector, which would bring a nice warm up to the
region. NBM probabilities remain very consistent of at least 80%
chance of seeing highs across all areas in the 40s. This warmth
will be relatively short-lived however, as cooler air quickly
follows during the weekend, pushing highs back towards the 20s for
Saturday and Sunday.

&&

.AVIATION...for 00Z TAF Issuance
Issued at 509 PM CST Tue Feb 24 2026

A fast moving band of snow showers has moved through the region,
with MVFR stratus left in its wake. CIGs should then rise to VFR
or scatter out much of the region late this evening as drier air
works its way in from the west. The exception looks to be north-
central Wisconsin where MVFR clouds will hang tough through
Wednesday morning.

Gusty southwest winds across east-central Wisconsin will become
westerly per upstream observations across north-central and
central Wisconsin where wind gusts of 20-25 knots are expected.
Winds will then ease Wednesday afternoon to around 10 knots.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Winter Weather Advisory until 6 PM CST this evening for WIZ022.
&&

$$

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