FXUS63 KGRB 022357

AFDGRB



Area Forecast Discussion

National Weather Service Green Bay WI

557 PM CST Mon Feb 2 2026



Updated aviation portion for 00Z TAF issuance



.KEY MESSAGES...



- The next chance for widespread accumulating snow will come

  Thursday into Friday. Areas north of HWY 29 have a 20-40% chance

  for greater than 1" of snow. Greatest accumulations are expected

  across north-central WI.



- Temperatures in the upper teens to 20s are expected each day

  this week. There is a 60-80% chance for highs above freezing

  Thursday and Friday south of HWY 29.



&&



.DISCUSSION...

Issued at 211 PM CST Mon Feb 2 2026



Short-wave that brought this mornings snow has shifted off to the 

east bringing dry conditions back to much of the region. There is 

still an area of light lake effect snow across Vilas Co. which will 

linger through this evening, however, don't expect much additional 

snow accumulations. A weak ridge is progged to move over the region 

Tuesday and Wednesday which will keep the forecast dry.



500mb LREF mean flow fields show a deepening low developing over 

northern Canada Thursday then tracking over Hudson Bay into Friday. 

This system will initially draw a surge of WAA north across WI 

Thursday with a 30-40% chance of snow beginning Thursday morning. As 

low and mid-level temperatures warm near 0C there is a chance snow 

may turn to rain for a period, mainly across central WI Thursday 

afternoon/evening. Thursday night into Friday a cold front will 

start to sweep across the region bringing another chance for snow, 

mainly north of HWY 29. Trend over the past 24 hours has been to 

take this system further north which has been reflected in NBM snow 

accumulation probs which snow show a 20-40% for greater than 1" 

north of HWY 29 with the greatest accumulations in the northern WI 

snow belts. Along with the snow 20-30 mph gusts will be possible 

Friday behind the cold front. A prolonged period of northwest flow 

will then develop behind the front allowing of periods of lake 

effect snow to linger through the weekend across northern WI. Any 

subtle short-waves moving through the northwest flow may also bring 

additional rounds of light snow to parts of the region through the 

weekend.



Temperatures remain on the milder side through most of the

period, with highs mainly in the 20s, and even some lower to middle 

30s in C/EC WI Thursday and Friday. A brief shot of below normal 

temperatures arrives in the wake of the late week clipper system, 

but temperatures should rebound a bit by the end of the weekend.



&&



.AVIATION...for 00Z TAF Issuance

Issued at 557 PM CST Mon Feb 2 2026



High-end MVFR and VFR clouds will remain across far northern and

eastern WI this evening, with some additional MVFR clouds 

possibly forming across central WI for a time later tonight. Some

mid and high clouds will also spread across the region this 

evening and again Tuesday afternoon/evening. Where the low clouds

are present, some flurries are expected at times tonight into 

Tuesday morning, especially closer to the MI border, but impacts 

will be limited to a few 5-7SM visibilities.



Light west/northwest/north winds are expected through the TAF 

period.



&&



.GRB WATCHES/WARNINGS/ADVISORIES...

None.



&&



$$



DISCUSSION.....GK

AVIATION.......Bersch