564 
FXUS63 KGRB 250759
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
259 AM CDT Thu Sep 25 2025

Forecast discussion for routine morning forecast issuance

.KEY MESSAGES...

- Patchy to areas of dense fog is expected across the area this
  morning, especially across north-central Wisconsin.

- An extended period of low-impact weather is forecast through at
  least the middle of next week. Above average temperatures and
  little to no rainfall are expected during this time.

&&

.DISCUSSION...
Issued at 259 AM CDT Thu Sep 25 2025

Areas of dense fog have developed across north-central Wisconsin
early this morning as well as portions of central Wisconsin where
visibilities have fallen to around one quarter of a mile. With
several more hours of this fog expected will issue a Dense Fog
Advisory for these areas this morning.

Dense fog and stratus will eventually burn off a few hours after 
sunrise across the region. Otherwise mostly sunny skies are 
expected today as high pressure stays in control of the region. A 
cold front sinking south tonight will bring the chance for some 
sprinkles this evening across north-central Wisconsin, but should 
otherwise track through the area fairly dry as model soundings 
show a dearth of moisture.

Temperatures will fall modestly behind the cold front on Friday,
with a robust rebound this weekend as temperatures rise solidly
into the 70s with a few 80 degree readings expected across the
region. High pressure will be in control of the weather through
much of the upcoming week with dry weather and above normal
temperatures expected across the area.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 1057 PM CDT Wed Sep 24 2025

Ceilings and visibilities will continue to lower across much of 
the area overnight into Thursday morning as low stratus and fog 
develop/spread into the region. Prospects are better for 
widespread fog tonight due to lighter winds under 1000 ft and 
moisture trapped under an inversion, especially across north-
central WI. But still some question how widespread the fog will 
become (verses a low stratus), especially over the east, where 
SREF probabilities of under a half mile range from 10-70%. Will 
continue to carry the lowest conditions (VLIFR/LIFR) at RHI where 
dense fog is expected, with TEMPO groups for some lower conditions
elsewhere. Any fog or low clouds will burn off after sunrise with
only a few daytime cumulus clouds expected the rest of the day. 
Clouds look to increase late Thursday, especially over northern 
WI, as a frontal boundary approaches. This boundary could bring 
some showers to RHI towards 06z Fri.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...
Dense Fog Advisory until 7 AM CDT this morning for WIZ005-
010>012-018>020-031-037.
&&

$$

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