974
FXUS63 KGRB 281730
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
1230 PM CDT Thu May 28 2026

Forecast discussion for routine afternoon forecast issuance

.KEY MESSAGES...

- Mainly dry weather with above normal temperatures and low relative
  humidity for the next week, with highs mainly in the middle 70s
  to middle 80s.

&&

.DISCUSSION...
Issued at 1017 AM CDT Thu May 28 2026

Persistence forecast continues for the better part of the next
week as an omega blocking pattern sets up over the CONUS. Only
chances for rain, though minimal, look to be Sunday night into
Monday as a backdoor cold front drops south over the state.
However, any sprinkles of rain will have to contend with abundant
dry air entrainment from a Hudson Bay high sitting and spinning to
the north.

Temperatures... High temperatures peak in the mid to upper 80s Friday
afternoon as a warming ridge builds over the Midwest, steadying
out in the mid 70s to mid 80s through the middle of next week.
Readings will likely be around 10 degrees cooler along the
shoreline each day as a lake breeze kicks in during the afternoon.
A rogue 90 degree reading or two would not be out of the question
Friday afternoon, with probabilistic guidance showing a 20 to 40%
signal for exceeding 90 degrees over far northeast Wisconsin.
However, an earlier shift to easterly winds may mitigate
temperatures.

Fire weather... RHs have already dropped down into the mid to
upper 30s across the sandy soil regions in north-central Wisconsin
early this afternoon, though light winds will assuage any
critical fire weather concerns later in the day as RHs continue to
fall. Elevated fire weather conditions will remain possible
through the weekend as a prolonged dry stretch allows afternoon
RHs to fall into the 20 to 30% range. This being said, green up
continues to spread across the Northwoods, with pine fuels
becoming less volatile as a result. Winds will also be light
during this time, which should reduce any significant impacts.

&&

.AVIATION...for 18Z TAF Issuance
Issued at 1017 AM CDT Thu May 28 2026

Expect VFR flying conditions and mostly clear skies to prevail
throughout the TAF period as high pressure influences us from the
northeast. Lake breeze kicks in later this afternoon, resulting in
gusts to 15 knots across the east-central terminals. Winds then
become light and variable overnight into Friday morning.

&&

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

&&

$$

DISCUSSION.....Goodin
AVIATION.......Goodin

NWS GRB Office Area Forecast Discussion