Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 050228
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
928 PM CDT Sat Oct 4 2025

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

LMZ521-522-051000-
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-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
928 PM CDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
LATE SUNDAY NIGHT...

...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH SUNDAY MORNING...

.REST OF THE NIGHT...S wind 10 to 20 kts. Clear. Waves 1 to 3 ft.
.SUNDAY...S wind 15 to 25 kts with gusts to around 30 kts. Sunny.
Waves 1 to 3 ft building to 2 to 4 ft in the late morning and
afternoon.
.SUNDAY NIGHT...S wind 15 to 25 kts veering SW 10 to 15 kts after
midnight. A chance of light showers and thunderstorms after
midnight. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.MONDAY...NW wind 5 to 10 kts veering N in the afternoon. A
chance of rain showers. Waves 2 ft or less.

$$

LMZ541-051000-
Rock Island Passage to Sturgeon Bay WI-
928 PM CDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.REST OF THE NIGHT...S wind 10 to 20 kts with gusts to around
25 kts. Clear. Waves 3 to 5 ft.
.SUNDAY...S wind 15 to 25 kts with gusts to around 30 kts. Sunny.
Waves 4 to 7 ft building to 5 to 8 ft.
.SUNDAY NIGHT...SW wind 15 to 25 kts with gusts to around 30 kts.
A chance of light showers after midnight. Waves 5 to 8 ft
subsiding to 4 to 7 ft early in the morning.
.MONDAY...NW wind 5 to 10 kts veering N in the afternoon. A
chance of rain showers. Waves 4 to 7 ft subsiding to 1 to 3 ft. A
Small Craft Advisory may be needed.

$$

LMZ542-543-051000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
928 PM CDT Sat Oct 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.REST OF THE NIGHT...S wind 10 to 20 kts with gusts to around
25 kts. Clear. Waves 3 to 5 ft.
.SUNDAY...S wind 15 to 25 kts with gusts to around 30 kts. Sunny.
Waves 2 to 4 ft building to 5 to 8 ft.
.SUNDAY NIGHT...SW wind 15 to 25 kts. Clear in the evening then
becoming mostly cloudy. Waves 5 to 8 ft subsiding to 4 to 7 ft.
.MONDAY...W wind 5 to 10 kts veering N in the afternoon. Light
rain showers likely in the morning, then a chance of rain showers
in the afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft. A Small
Craft Advisory may be needed.

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.