NWS-Green Bay Forecast Discussion

						FXUS63 KGRB 110853
AFDGRB

Area Forecast Discussion
National Weather Service Green Bay WI
253 AM CST Sun Jan 11 2026

Forecast discussion for routine morning forecast issuance

.KEY MESSAGES...

- There is a chance of light snow accumulations across northern
  Wisconsin tonight.

- Light mixed precipitation is expected late Monday night into
  Tuesday night, with accumulating lake-effect snow expected in
  north-central Wisconsin late Tuesday night into Wednesday.

- Temperatures will rebound to above normal early next week, then
  fall again into midweek.

&&

.DISCUSSION...
Issued at 253 AM CST Sun Jan 11 2026

The heaviest snow has ended across the region with all headlines
dropped across the area. Some light snow or flurries will continue
early this morning as a mid-level shortwave tracks through the
western Great Lakes region with lake effect snow hanging on for a
few hours more across Vilas County. Additional snowfall amounts
early this morning will be very light, on the order of a few
tenths of an inch. Clearing is expected across all but north-
central Wisconsin once the snow showers end this morning, but
this will short-lived, as clouds will increase ahead of a clipper
system approaching from the west later in the afternoon.

This weak clipper system will brush through northern Wisconsin
tonight, which could bring light accumulations and slippery roads
across this area. Snowfall amounts tonight will again be light,
with less than an inch expected.

A second, stronger clipper arrives late Monday night, bringing
light mixed precipitation through Tuesday night. Accumulating
lake-effect snow is expected over north-central Wisconsin late
Tuesday night into Wednesday. Snowfall amounts from this system
again look to be on the lighter side, with at most a couple of
inches across the lake-effect region of Vilas County

Additional chances for light snow arrive Thursday into Friday
night, and last into the weekend; however, no big storms are
anticipated and details remain uncertain this far out.

Temperatures will warm to above normal early next week. A decent
surge of colder air and gusty north winds follows the midweek
clipper system, leading to cooler temperatures for the latter half
of the work week and into next weekend.

&&

.AVIATION...for 06Z TAF Issuance
Issued at 939 PM CST Sat Jan 10 2026

A band of moderate snow will drop south across eastern WI late
this evening into early overnight. This band of snow will be
weakening but could still drop visibilities to IFR briefly at
GRB/MTW in the 04-07Z timeframe. Light snow will still impact the
other terminals with MVFR ceilings and visibilities
predominately. Flurries will likely linger after the band of snow
exits until late tonight.

Low- level wind shear remains a concern overnight as a 35-40 kts
develops around 2,000 ft AGL.

Drier air arriving from the northwest will lead to clearing and a
return to VFR for most sites by 14Z-17Z Sunday. MVFR ceilings
will likely persist longest at KRHI due to lake-effect clouds.
West to northwest winds will remain gusty through much of the TAF
period with gusts peaking 20 to 25 kts.

Light snow may redevelop (30-40% chance) over far northern WI
(RHI) on Sunday evening along with low level wind shear.

&&

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

&&

$$

DISCUSSION.....Kurimski
AVIATION.......MPC