Forecast Discussion for GRB NWS Office
218
FXUS63 KGRB 280649
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
149 AM CDT Tue Jul 28 2026

Forecast discussion for routine morning forecast issuance

.KEY MESSAGES...

- Gusty northerly winds will build waves from 3 to 5 feet on Lake
  Michigan south of Two Rivers through this afternoon.

- Quiet conditions expected through Thursday. Rain chances come
  back on Friday and Saturday.

&&

.DISCUSSION...
Issued at 149 AM CDT Tue Jul 28 2026

Quieter and much drier weather arrives today as winds pick up
from the north. Gusts up to 20 to 25 mph at times will help usher
in a dry and sunny day as high pressure moves into the region.
Temperatures are expected to remain near or above normal today
before warm air advection again increases through the middle of
the week. High temperatures on Thursday could get back towards the
middle to upper 80s and maybe even low 90s, which could produce a
few sporadic showers in the afternoon. Still, no widespread
active weather is expected until sometime Thursday night into
Friday with the next frontal passage. Rain and storms then stick
around Friday into early Saturday before some quieter conditions
return for the latter half of the weekend.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 1111 PM CDT Mon Jul 27 2026

Dry conditions are expected through the TAF period. Some lower
clouds (IFR/MVFR) will continue to spread across the area at times
overnight, with clouds expected to clear early Tuesday. Added a
TEMPO groups for these lower clouds between 06-10z. Will be
monitoring for fog development overnight, especially across north-
central WI, but have not included any mention for now. Hazy skies
are expected much of the TAF period as elevated smoke remains
over the region.

N/NNE winds will continue overnight across eastern WI with a few
gusts to 15 kts possible. Winds will be light over central and
north-central WI overnight into Tuesday. Winds shift to the
northeast across eastern WI on Tuesday, gusting to 15 kts.

.KOSH...

Dry conditions are expected through the TAF period. A few patches
of lower clouds (MVFR) are possible overnight, so have introduced
a TEMPO group for those clouds. Hazy skies are expected much of
the TAF period as elevated smoke remains over the region. N/NNE
winds will continue overnight into Tuesday, with gusts to 15 kts
at times.

&&

.MARINE...
Issued at 149 AM CDT Tue Jul 28 2026

Gusty northerly winds of 15 to 25 knots today will cause waves to
build to 3 to 5 feet on the Lake Michigan nearshore waters south
of Two Rivers, where a Small Craft Advisory is in effect. Winds
and waves will gradually subside this afternoon as high pressure
builds in from the north.

&&

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

&&

$$

DISCUSSION.....Kurimski
AVIATION.......Bersch
MARINE.........Kurimski

NWS GRB Office Area Forecast Discussion