FXUS63 KGRB 021713

AFDGRB



Area Forecast Discussion

National Weather Service Green Bay WI

1113 AM CST Mon Feb 2 2026



Updated aviation portion for 18Z 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 18Z TAF Issuance

Issued at 1113 AM CST Mon Feb 2 2026



VFR status is lingering over much of the region late this morning 

with gradual clearing being to occur across central WI. Clouds 

should continue to clear out across much of the region this 

afternoon, except across north-central where lake induced MVFR/VFR 

status will linger longer.



Where clouds are present early this afternoon snow flurries will be 

possible, however, based on current surface ob trends any flurries 

should have little impact on vsbys. Light lake effect snow may also 

linger through the afternoon across north-central WI, including 

RHI, with brief periods of 5-7SM visibility.



Light northwest to north winds are expected through the TAF period.



&&



.GRB WATCHES/WARNINGS/ADVISORIES...

None.



&&



$$



DISCUSSION.....Kieckbusch

AVIATION.......GK