Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 041517
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
917 AM CST Thu Dec 4 2025

For waters within five nautical miles of the shore on Lake Michigan

LMZ522-050300-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
917 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM CST THIS EVENING
THROUGH FRIDAY MORNING...

.THIS AFTERNOON...SW wind 10 to 15 kts. Mostly sunny. Waves 1 to
3 ft.
.TONIGHT...SW wind 15 to 25 kts with gusts to around 30 kts.
Freezing spray after midnight. A slight chance of light snow
after midnight. Waves 2 to 4 ft building to 4 to 7 ft in the late
evening and overnight.
.FRIDAY...SW wind 10 to 20 kts. Gusts to around 25 kts in the
morning. A chance of light snow. Waves 3 to 5 ft subsiding to
1 to 3 ft.
.FRIDAY NIGHT...W wind 10 to 20 kts. Light snow likely in the
evening. Waves 2 ft or less.

$$

LMZ521-050300-
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
917 AM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH LATE
TONIGHT...

.THIS AFTERNOON...SW wind 10 to 20 kts. Mostly sunny. Waves 1 to
3 ft building to 2 to 4 ft late.
.TONIGHT...SW wind to around 30 kts with gusts to around 35 kts.
Freezing spray. A slight chance of light snow after midnight.
Waves 4 to 7 ft building to 5 to 8 ft after midnight, then
subsiding to 4 to 7 ft early in the morning.
.FRIDAY...SW wind 10 to 20 kts. Gusts to around 30 kts in the
morning. A chance of light snow. Waves 4 to 7 ft subsiding to
1 to 3 ft. A Small Craft Advisory may be needed.
.FRIDAY NIGHT...W wind 10 to 20 kts with gusts to around 25 kts.
Light snow likely in the evening. Waves 1 to 3 ft.

$$

LMZ541-050300-
Rock Island Passage to Sturgeon Bay WI-
917 AM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH LATE
TONIGHT...

.THIS AFTERNOON...SW wind 10 to 20 kts. Partly cloudy. Waves 1 to
3 ft.
.TONIGHT...SW wind to around 30 kts with gusts to around 35 kts.
Freezing spray. A chance of light snow and flurries after
midnight. Waves 3 to 5 ft building to 5 to 8 ft.
.FRIDAY...SW wind 10 to 20 kts. Gusts to around 30 kts in the
morning. A chance of light snow. Waves 4 to 7 ft subsiding to
2 to 4 ft. A Small Craft Advisory may be needed.
.FRIDAY NIGHT...W wind 10 to 20 kts with gusts to around 25 kts.
A chance of light snow in the evening. Waves 2 to 4 ft subsiding
to 1 to 3 ft early in the morning.

$$

LMZ542-543-050300-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
917 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM CST THIS EVENING
THROUGH FRIDAY MORNING...

.THIS AFTERNOON...W wind 10 to 15 kts. Mostly sunny. Waves 2 ft
or less.
.TONIGHT...SW wind 15 to 25 kts with gusts to around 30 kts.
Freezing spray after midnight. A chance of flurries after
midnight. Waves 1 to 3 ft building to 4 to 7 ft.
.FRIDAY...SW wind 10 to 20 kts with gusts to around 25 kts. A
chance of flurries in the morning, then a chance of light snow in
the afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.FRIDAY NIGHT...W wind 10 to 20 kts. Light snow in the evening.
Waves 1 to 3 ft.

$$

See Lake Michigan Open Lake Forecast for Saturday through Monday.