Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 040927
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
427 AM CDT Mon Aug 4 2025

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

LMZ521-522-041300-
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-
427 AM CDT Mon Aug 4 2025

.EARLY IN THE MORNING...Light and variable winds around 5 kts or
less. Haze. Waves 2 ft or less.
.TODAY...E wind 5 to 10 kts. Haze. Areas of smoke in the
afternoon. Waves 2 ft or less.
.TONIGHT...E wind 5 to 10 kts. Areas of smoke. Haze after
midnight. Waves 2 ft or less.
.TUESDAY...E wind 5 to 10 kts. Haze and areas of smoke. Waves
2 ft or less.
.TUESDAY NIGHT...E wind 5 to 10 kts veering SE after midnight.
Mostly clear. Waves 2 ft or less.

$$

LMZ541-041300-
Rock Island Passage to Sturgeon Bay WI-
427 AM CDT Mon Aug 4 2025

.EARLY IN THE MORNING...Light and variable winds around 5 kts or
less. Partly cloudy. Waves 2 ft or less.
.TODAY...E wind 5 to 10 kts. Haze. Areas of smoke in the
afternoon. Waves 2 ft or less.
.TONIGHT...E wind 5 to 10 kts veering SE after midnight. Areas of
smoke. Haze after midnight. Waves 2 ft or less.
.TUESDAY...SE wind 5 to 10 kts backing E in the afternoon. Areas
of smoke in the morning, then haze in the afternoon. Waves 2 ft
or less.
.TUESDAY NIGHT...E wind 5 to 10 kts veering SE after midnight.
Mostly clear. Waves 2 ft or less.

$$

LMZ542-543-041300-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
427 AM CDT Mon Aug 4 2025

.EARLY IN THE MORNING...N wind around 5 kts. Partly cloudy. Waves
2 ft or less.
.TODAY...NE wind 5 to 10 kts. Haze. Areas of smoke in the
afternoon. Waves 2 ft or less.
.TONIGHT...E wind 5 to 10 kts. Haze and areas of smoke. Waves
2 ft or less.
.TUESDAY...SE wind 5 to 10 kts backing E in the afternoon. Haze
and areas of smoke. Waves 2 ft or less.
.TUESDAY NIGHT...NE wind 5 to 10 kts veering SE after midnight.
Mostly clear. Waves 2 ft or less.

$$

See Lake Michigan Open Lake Forecast for Wednesday through Friday.