Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 041128
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
628 AM CDT Fri Jul 4 2025

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

LMZ521-522-042000-
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-
628 AM CDT Fri Jul 4 2025

.TODAY...S wind 5 to 10 kts. A slight chance of light showers and
thunderstorms. Waves 2 ft or less.
.TONIGHT...S wind 10 to 15 kts. Partly cloudy. Waves 2 ft or
less.
.SATURDAY...SW wind 10 to 20 kts with gusts to around 25 kts. A
chance of light showers and thunderstorms in the afternoon. Waves
1 to 3 ft. A Small Craft Advisory may be needed.
.SATURDAY NIGHT...SW wind 10 to 20 kts. Showers in the evening. A
chance of thunderstorms. A chance of light showers after
midnight. Waves 1 to 3 ft.

$$

LMZ541-042000-
Rock Island Passage to Sturgeon Bay WI-
628 AM CDT Fri Jul 4 2025

.TODAY...S wind 5 to 10 kts increasing to 10 to 20 kts in the
afternoon. A slight chance of light showers and thunderstorms.
Waves 1 to 3 ft.
.TONIGHT...S wind 10 to 20 kts. Partly cloudy. Waves 2 to 4 ft.
.SATURDAY...S wind 10 to 20 kts. A chance of light showers and
thunderstorms in the afternoon. Waves 1 to 3 ft building to 3 to
5 ft in the afternoon. A Small Craft Advisory may be needed.
.SATURDAY NIGHT...SW wind 10 to 20 kts with gusts to around
25 kts. Showers and a chance of thunderstorms. Waves 3 to 5 ft
subsiding to 2 to 4 ft early in the morning.

$$

LMZ542-543-042000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
628 AM CDT Fri Jul 4 2025

.TODAY...S wind 5 to 10 kts increasing to 10 to 20 kts in the
afternoon. A chance of light showers and thunderstorms. Waves
1 to 3 ft.
.TONIGHT...S wind 10 to 20 kts. Partly cloudy. Waves 1 to 3 ft.
.SATURDAY...S wind 15 to 25 kts. A chance of light showers and
thunderstorms in the afternoon. Waves 1 to 3 ft building to 3 to
5 ft in the afternoon. A Small Craft Advisory may be needed.
.SATURDAY NIGHT...SW wind 10 to 20 kts with gusts to around
25 kts. Showers likely in the evening. A chance of thunderstorms.
A chance of light showers after midnight. Waves 3 to 5 ft
subsiding to 2 to 4 ft after midnight.

$$

See Lake Michigan Open Lake Forecast for Sunday through Tuesday.