FXUS63 KGRB 021157

AFDGRB



Area Forecast Discussion

National Weather Service Green Bay WI

557 AM CST Mon Feb 2 2026



Updated aviation portion for 12Z TAF issuance



.KEY MESSAGES...



- Slippery conditions from last night's snow and patchy freezing

  drizzle may extend into this morning's commute, especially on

  untreated secondary roads.



- A clipper system may impact the area Thursday and Friday. This

  system has the potential to bring minor snow accumulations and

  gusty winds, followed by a brief return to colder temperatures.



- Highs in the 20s will be common for much of the week, with the

  warmest days occurring Thursday and Monday, when some locations

  may reach the lower to middle 30s.



&&



.DISCUSSION...

Issued at 252 AM CST Mon Feb 2 2026



Light snow over eastern WI will continue to shift east early this

morning as a short-wave and associated cold front move out of the

region. Scattered lake-effect snow showers will linger across far

NC WI during the day, and probably into tonight. Otherwise

scattered flurries and patchy freezing drizzle (across the far 

south part of the forecast area) should taper off around daybreak.

Slippery roads from last night's snow and patchy freezing drizzle

may linger into the morning commute, especially on any untreated 

secondary roads. Overcast conditions should give way to a few

breaks as the day wears on, and this should help boost

temperatures into the upper teens and lower 20s northwest to the

middle to upper 20s elsewhere. More widespread clearing occurs 

tonight, except in far NC WI, where some lake-effect clouds 

persist. Partly cloudy skies and light winds should allow 

temperatures to drop into the single digits above and below zero.



A period of high pressure will bring dry conditions Tuesday through

Wednesday night as the upper-level pattern re-amplifies. An upper

ridge strengthens over the western U.S. while a mean trough 

reinforces itself over the East. This set-up will pave the way for

another clipper system Thursday into Friday. Model trends are 

leaning toward a farther north track through Ontario with this 

system; perhaps as far north as Hudson/James Bays. If this occurs,

would expect less snow and a bit warmer temperatures. Gusty NW-N 

winds would still occur on Friday, but with a lower chance of 

gales on Lake Michigan.



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 Monday. 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 12Z TAF Issuance

Issued at 544 AM CST Mon Feb 2 2026



Although the main area of light snow has shifted east of the

region, patchy light snow showers/flurries/freezing drizzle (far 

SE) were still occurring along and ahead of the surface cold 

front. MVFR/IFR ceilings were observed near the front, but 

conditions improved to VFR behind it, with some breaks in the 

cloud cover noted over central and southern MN and NW WI. This 

should result in improving conditions over the forecast area during

the mid to late morning. More widespread clearing is anticipated 

this evening as a surface high builds into the region, though some

low clouds and scattered light lake-effect snow showers may 

persist over far NC WI through much of the night.



W-NW winds will become NW-N tonight, with speeds generally under

10 knots.



&&



.GRB WATCHES/WARNINGS/ADVISORIES...

None.



&&



$$



DISCUSSION.....Kieckbusch

AVIATION.......Kieckbusch