630
FXUS63 KGRB 100954
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
454 AM CDT Fri Oct 10 2025

Forecast discussion for routine morning forecast issuance

.KEY MESSAGES...

- Scattered showers continue to morning, tapering off for the
  second half of the day.

- Mild temperatures the rest of the week with readings at or
  above normal.

- Additional rain chances Sunday night into Monday and later next
  week.

&&

.DISCUSSION...
Issued at 454 AM CDT Fri Oct 10 2025

Ongoing, scattered rain showers early this morning in association
with low level warm advection ahead of the surface cold front. Any
lightning has remained south/west of the GRB forecast area, but
with a small amount of instability and strong dynamics at play,
cannot rule out isolated thunder through the morning. S/SW winds
will be somewhat gusty ahead of the front this morning, especially
across marine areas where a Small Craft Advisory remains in
effect. The cold front passes through this morning and departs to
the east by early afternoon. This will bring an end to most of the
rain, but upper low across the Great Lakes will keep a small
chance of showers in the forecast through this evening, mainly for
eastern Wisconsin. Behind the front, winds switch to the NW and
remain gusty through this evening.

Added a very small chance showers to the lakeshore on Saturday as
northeast winds over the lake, and lingering upper low may produce
a few specks here and there. A couple of the CAMs were showing
this as well around midday Saturday.

Otherwise, continue to highlight another cold front coming through
late Sunday/Monday which will bring the next chance for precip
area wide. Models have slowed down through the midweek, keeping
surface high pressure in place for a bit longer, and mainly dry
weather Tuesday and Wednesday. Rain chances return for the end of
the week.

Temperatures will be slightly above normal through Monday with
highs mainly in the 60s, and lows in the 40s. Readings fall closer
to normal for the rest of next work week.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 946 PM CDT Thu Oct 9 2025

A cold front will bring showers overnight into Friday morning.
Expect a transition from VFR to MVFR with showers and gusty winds
as the front moves through the area. Thunderstorm coverage is
expanding over western WI, and will add a tempo to AUW/CWA at the
start of the taf period.

Showers will develop across central and north-central WI (KRHI,
KCWA, KAUW) between 05-07Z, spreading to the east (KGRB, KATW,
KMTW) by 10-12Z. A period of MVFR ceilings (020-030 AGL) remains
possible over north-central and central WI on Friday morning.
Gusty S-SW winds ahead of the front will shift to gusty NW (20-25
kts) Friday afternoon in the wake of the front. Another round of
MVFR ceilings is expected to develop Friday evening over northeast
Wisconsin.

Outlook: Lingering MVFR ceilings and gusty north to northeast
winds may continue into Saturday morning.

&&

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

&&

$$

DISCUSSION.....KLJ
AVIATION.......MPC