Peplin, Wisconsin Weather Forecast Discussion

817
FXUS63 KGRB 291944
AFDGRB
Area Forecast Discussion
National Weather Service Green Bay WI
244 PM CDT Mon Sep 29 2025
Forecast discussion for routine afternoon forecast issuance
.KEY MESSAGES...
- Areas of fog, locally dense, will impact the region tonight into
  early Tuesday morning. The fog may result in locally hazardous
  travel conditions for the early morning commute on Tuesday.
- Dry conditions prevail through at least Friday, with a chance
  of showers and isolated thunderstorms arriving Friday night into
  Saturday, and continuing at times through Monday.
- Above to much above normal temperatures anticipated through the
  next week.
&&
.DISCUSSION...
Issued at 243 PM CDT Mon Sep 29 2025
Mostly sunny skies covered the region this afternoon, with
temperatures ranging from the middle 70s near Lake Michigan to the
upper 70s and lower 80s elsewhere. The latest surface analysis
showed a Canadian cold front sagging south through northern
Minnesota and northern Lake Superior.
A weak back door cold front will drop south across the region
tonight, with greater potential for areas of fog and patchy dense
fog as a shallow cooler air mass arrives and winds become light
from the east to northeast overnight. The fog could pose localized
travel hazards for the Tuesday morning commute. Lows are expected
to drop into the upper 40s to middle 50s in most areas.
Canadian high pressure will ridge across the Great Lakes region
through the rest of the work week, and will be slow to shift east
due to the blocking influence of a couple tropical systems in the
western Atlantic. Tonight`s cold frontal passage will bring a
minor cooling trend mid-week, followed by much above normal
temperatures for the end of the work week and the weekend.
Dry conditions persist until Friday night or Saturday, when a
chance of showers and isolated thunderstorms arrive in conjunction
with a weakening cold front. Another more significant cold front
is expected to move through late Sunday night into Monday, so
periodic showers and isolated storms should continue into early
next week.
Winds will pick up a bit out of the southeast Wednesday night
into Thursday, leading to possible marine concerns (Small Craft
Advisories) on Lake Michigan, especially south of Two Rivers.
&&
.AVIATION...for 18Z TAF Issuance
Issued at 1230 PM CDT Mon Sep 29 2025
Clear skies and light SW-SE winds are expected this afternoon.
A weak cold front will sag south across the region tonight.
Shallow cool air and developing light NE-E winds in the wake of
the front will provide favorable conditions for fog development
overnight into early Tuesday morning. Many airport locations
should see IFR/LIFR flight conditions due to reduced vsbys and
low stratus. The fog is expected to mix out by 13z-14z/Tue at
most locations. Light SE-NE winds will prevail on Tuesday.
&&
.GRB WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
DISCUSSION.....Kieckbusch
AVIATION.......Kieckbusch

NWS GRB Office Area Forecast Discussion