299 
FXUS63 KGRB 302336
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
536 PM CST Sun Nov 30 2025

Updated aviation portion for 00Z TAF issuance

.KEY MESSAGES...

- Travel conditions will continue to improve this evening, however
  light lake effect snow in far north-central WI will continue to
  produce slippery spots on roads.

- Much colder air arrives this week. Wind chills will likely fall
  to the single digits below zero Monday morning. Even colder air
  arrives Wednesday night.

- Off and on chances for light snow this week, but overall impacts
  are minimal.

&&

.DISCUSSION...
Issued at 306 PM CST Sun Nov 30 2025

As of 20Z, there were some lingering light snow or flurries 
across far eastern WI/Door County, along with lake effect snow in 
far north- central WI. Otherwise, snow had ended. Blowing/drifting
concerns were also minimal as the snow has settled and winds have
started to decrease a bit. Additional snowfall accumulations of a
few tenths are possible late this afternoon and early evening 
across mainly Vilas County. 

Cold Temperatures...High pressure builds in from the west 
tonight, and while the center of the high will pass south of the 
area, the combination of light winds, partial clearing, and fresh 
snow will allow temperatures to drop into the single digits, with
some locations in north-central WI likely getting a couple 
degrees below zero. While winds Monday morning will be light, any 
bit of wind will create a wind chill around 0 to 10 below. 

Temperatures remain below normal through the week, with a
secondary push of cold air behind an Arctic front Wednesday night,
as lows drop in the single digits below zero for most. Wind 
chills Thursday morning are forecast to range from 10 to 20 below.

Precip...There are minor snow chances throughout the forecast, 
but overall impacts from each event looks low. The next chance 
for snow is Monday afternoon and evening, primarily across 
central and east-central WI (or south of Hwy 29), as this is the 
far northern periphery of a system located much farther south. A 
dusting to a couple tenths is possible.

Dry weather is expected Tuesday, followed by chances (30-60%) for
light snow on Wednesday in association with the Arctic front. 
Moisture is rather limited, with forecast snow amounts around 1 
inch or less. 

There are chances for snow again Friday and into the weekend, but
specifics are hazy this far out. Sunday currently looks like the
best opportunity to pick up a couple inches of snow for some.

&&

.AVIATION...for 00Z TAF Issuance
Issued at 523 PM CST Sun Nov 30 2025

A mix of VFR/MVFR ceilings were observed across the forecast area,
with the lowest ceilings over the northwest part of the region.
Have delayed clearing at the TAF sites until mid to late evening,
though it is possible that low clouds will hang around even
longer, especially in NC/C WI. High pressure passes through
overnight, then slides east Monday morning. A short-wave trough 
arrives in the afternoon, resulting in increasing clouds and 
eventually some light snow across C/EC WI after 21z/Mon. Flight 
conditions should drop to MVFR once the steadier light snow 
develops. 

NW winds will subside this evening and gradually back to the W 
and SW tonight into Monday.

&&

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

&&

$$

DISCUSSION.....KLJ
AVIATION.......Kieckbusch