Sayner, Wisconsin Weather Forecast Discussion

889
FXUS63 KGRB 240725
AFDGRB
Area Forecast Discussion
National Weather Service Green Bay WI
225 AM CDT Wed Sep 24 2025
Forecast discussion for routine morning forecast issuance
.KEY MESSAGES...
- A period of low impact weather expected through the remainder of
  the week through the early part of next week with little
  rainfall and temperatures trending above average.
&&
.DISCUSSION...
Issued at 225 AM CDT Wed Sep 24 2025
Low level clouds and patchy fog due to moisture from the northerly
flow over Lake Superior are expected this morning across northern
Wisconsin. Although the fog should burn off a few hours after
sunrise, the low clouds will likely persist across northern
Wisconsin due to the persistent influx of moisture.
A mid level trough, evident on GOES water vapor imagery over the
north-central Great Lakes region, will slowly sink south through
tonight and eventually push off to the east on Thursday as upper
level ridging establishes itself across the Great Lakes. An
isolated sprinkle will be possible given the overall troughing
across the region, with the best chance (less than 20%) during
the afternoon during peak heating.
The upper level ridging should keep the weather fairly dry for the
rest of the week and into the weekend as well as the early part
of next week as temperatures warm well above normal for this time
of year. Highs are expected to be solidly in the 70s with a non-
zero chance of hitting 80 (5-10% chance) across central and east-
central Wisconsin as lows in the 40s and 50s are expected across
the region.
&&
.AVIATION...for 06Z TAF Issuance
Issued at 1052 PM CDT Tue Sep 23 2025
A stratus deck will continue to overspread the region late this
evening into early Wednesday. Mainly IFR/MVFR ceilings are
expected, with LIFR possible over north-central WI (RHI).
Can`t rule out a few sprinkles on Wednesday, but no impacts are
expected. Ceilings will slowly increase on Wednesday. Lower clouds
will be possible again Wednesday night.
Some fog is expected overnight into early Wednesday, mainly
across central and north central WI. HREF probabilities are very
low (under 20%) for under a mile VSBY, but much of the other
guidance (MET/MAV/LAV/LAMP) are more aggressive with the more
widespread and denser fog. RHI looks to be most impacted by the
fog, with the SREF showing 50-70% of under a mile. Will continue
to have the lowest VSBYs (LIFR... possibly VLIFR) at RHI. Winds
will remain out of the north to northeast under 15 kts tonight
into Wednesday.
&&
.GRB WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
DISCUSSION.....Kurimski
AVIATION.......Bersch

NWS GRB Office Area Forecast Discussion