430 

FXUS63 KGRB 300448

AFDGRB



Area Forecast Discussion

National Weather Service Green Bay WI

1048 PM CST Mon Dec 29 2025



Updated aviation portion for 06Z TAF issuance



.KEY MESSAGES...



- A clipper system brings next round of fluffy light snow late 

  Tuesday morning through Tuesday afternoon. An inch or less is 

  likely for most, with locally higher amounts closer to two 

  inches for a few areas in eastern Wisconsin.



- Wind chills as cold as 15 to 25 below zero are possible New

  Years Eve night into Thursday morning and again Friday morning.



&&



.DISCUSSION...

Issued at 133 PM CST Mon Dec 29 2025



Conditions across the area have been slowly improving in the wake

of the strong wintry system that crossed the area overnight. Winds

that remained quite strong this morning are expected to drop off 

fairly quickly over the afternoon as the pressure gradient loosens

over the area, which will help reduce any lingering blowing and 

drifting snow. Once the winds decrease, would expect to be able 

to drop the remaining winter headlines later this afternoon and 

evening.



Quieter conditions then return to the region for the overnight

period as some clearing moves into the area. With fresh snow and

clear skies, a colder night once again lies ahead for the region,

with low temperatures in the single digits to low teens. Tuesday

morning wind chill readings will likely be between zero and ten

below. 



The next clipper system will be in the works for Tuesday afternoon

and evening. With limited moisture and a fairly cold airmass in

place, additional snow will be somewhat limited with this next

clipper. Most of the area will likely see an inch or less of

snowfall, with a few locally higher totals getting closer to 2

inches. Colder air follows in the wake of the next clipper, which

will bring back a period of lake effect snowfall to the region for

the middle of the week. Temperatures Wednesday night will be

particularly cold, with wind chill readings in the morning ranging

between 15 to 25 below zero.



&&



.AVIATION...for 06Z TAF Issuance

Issued at 1047 PM CST Mon Dec 29 2025



SCT-BKN MVFR cigs with some flurries will give way to partial 

clearing overnight. Cigs will persist most of the night at RHI

though. Next round of light snow, with IFR vsby, arrives 15z-17z 

over central and north-central WI, before spreading into eastern 

WI by 18z. The snow will exit from west to east on Tuesday evening.

Mainly MVFR cigs with the snow, but cigs will lower to IFR central

to north-central WI as the snow begins to depart. Most locations

will see around an inch of fresh snow from late Tuesday morning 

through Tuesday afternoon. Locally a few spots over eastern WI 

could see around 2 inches.



&&



.GRB WATCHES/WARNINGS/ADVISORIES...

None.



&&



$$



DISCUSSION.....Uhlmann

AVIATION.......JLA