614
FXUS63 KGRB 092319
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
619 PM CDT Sun Aug 9 2026

Updated aviation portion for 00Z TAF issuance

.KEY MESSAGES...

- Showers and storms this afternoon and this evening. Severe
  weather is not expected; however, gusty winds and heavy rain
  will be possible with any storm activity.

- Additional rounds of showers and storms from late Monday night
  through the middle of the week. Confidence in storm timing and
  severity remains low.

- High temperatures in the upper 70s to low 80s through mid- week,
  followed by a cooling trend late in the week.

&&

.DISCUSSION...
Issued at 1258 PM CDT Sun Aug 9 2026

Showers and thunderstorms are possible this afternoon and evening
as a cold front sweeps through the region. Dry conditions should
then follow overnight behind the front. Monday is looking to be
dry now as the front will be south enough so additional showers
and thunderstorms should not clip the southern portion of the CWA.

The next noteworthy chances for rain/storms look to come late
Monday night into Tuesday as the front lifts back north and a
shortwave tracks through the western Great Lakes region. Rain
chances will then continue Tuesday night into Wednesday as
additional shortwaves move through the region and the front
remains close enough to our area to influence our weather.

High pressure builds in across the area Wednesday night, pushing
the front south and generally keeping the area dry through the
rest of the work week. The high eventually shifts east, allowing
for the chance for showers and thunderstorms to return to the area
next weekend.

Temperatures will generally be in the upper 70s to lower 80s
through mid week, decreasing into the 70s for the back portion of
the work week into next weekend.

&&

.AVIATION...for 00Z TAF Issuance
Issued at 614 PM CDT Sun Aug 9 2026

Areas of MVFR CIGS continue early this evening from KAUW to
KTKV east towards Marinette and Oconto counties. This low
deck should dissipate a few hours after sunset. Later tonight,
areas of fog are expected to develop with at least MVFR
CIGS and VSBYs. Areas of IFR or lower conditions expected in
spots due to dense fog. Any linger fog and low clouds should
burn off by 15-16z on Monday. Fair weather cumulus clouds
between 4-6 thousand feet are expected Monday afternoon.
Light winds tonight will become northwest Monday morning
and then back to the south/southwest later in the afternoon.
The only exception will be at KSUE and KMTW where the winds
backs to the south/southeast between 18z-20z.


&&

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

&&

$$

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

NWS GRB Office Area Forecast Discussion