492
FXUS63 KGRB 281112
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
612 AM CDT Tue Apr 28 2026

Updated aviation portion for 12Z TAF issuance

.KEY MESSAGES...

- A few showers early today, then small chances (20-30%) for
  scattered showers Wednesday and Thursday. Overall though,
  minimal rainfall under 0.25 inch expected into the weekend.

- Minor flooding persists on the Wolf River and on the Winnebago
  system. However, little additional rain will allow flooding
  concerns to gradually subside late this week into next weekend.

- Temperatures trending below normal Wednesday into the weekend.

&&

.DISCUSSION...
Issued at 1248 AM CDT Tue Apr 28 2026

Near term through this afternoon...Cold front slides through
early this morning. Any thunder has already exited, but could
still see a few lingering light showers before daybreak across
central and north-central WI. Mostly cloudy skies this morning,
but expect pockets of clearing to develop this afternoon. Don`t
think it turns completely sunny though. Breezy behind the front,
with northwest winds gusting to 25-35 mph, peaking during the
morning. Temperatures today will be around normal with mid 50s
north, to the lower 60s eastern WI. This will be the warmest day
the rest of the week.

Mainly dry rest of the week into the weekend...Other than a small
chance of showers Wednesday afternoon on tail end of northern stream
shortwave, and on Thursday as another weak wave traverses the region,
high pressure will result in dry weather into the weekend. Total
rainfall from both chances for rain will be well under 0.25 inch.
No thunder is expected.

Temperatures trending cooler than normal...From Wednesday through
Saturday, expect below normal temperatures. Coolest days through
Friday, with highs in the mid 40s north to lower 50s elsewhere.
Nighttime lows will be on the cool side as well, especially when
high pressure is overhead late this week. Stay tuned as we may
begin frost/freeze headlines later this week into the weekend. If
that is the case, some headlines may be needed.

&&

.AVIATION...for 12Z TAF Issuance
Issued at 611 AM CDT Tue Apr 28 2026

The cold front that caused the showers and storms Monday evening
has exited east this morning. Widespread MVFR cigs with pockets of
IFR over north-central WI, will try to scatter out this afternoon,
but some areas will remain mostly cloudy. Cigs will transition to
VFR this evening and tonight as mid clouds sweep back across the
area.

West to northwest winds will be stronger this morning, with gusts
of 25-33 kts. Winds will diminish slightly this afternoon with
gusts lowering to around 20 kts. Winds then become light tonight.
LLWS at RHI will end early in the TAF period.

&&

.HYDROLOGY...
Issued at 1248 AM CDT Tue Apr 28 2026

Minor flooding persists on the Wolf River at Shiocton and New
London, in addition to the Winnebago system. However, with less
rainfall than forecast late last week and again Monday into Monday
night, even these flooding concerns will gradually lessen into
the weekend. Those living near rivers or streams should continue
to monitor the latest Flood Warnings and statements from the National
Weather Service in Green Bay.

&&

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

&&

$$

DISCUSSION.....JLA
AVIATION.......JLA
HYDROLOGY......JLA

NWS GRB Office Area Forecast Discussion