Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 171826
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
126 PM CDT Sun Aug 17 2025

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

LMZ521-522-180200-
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-
126 PM CDT Sun Aug 17 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH THIS EVENING...

.THIS AFTERNOON...NE wind 10 to 20 kts. Partly cloudy. Waves 2 to
4 ft.
.TONIGHT...E wind 10 to 20 kts veering SE after midnight. A
chance of showers and thunderstorms after midnight. Waves 1 to
3 ft.
.MONDAY...SE wind 10 to 20 kts. A chance of thunderstorms.
Showers likely in the afternoon. Waves 1 to 3 ft.
.MONDAY NIGHT...S wind 10 to 20 kts. Showers likely in the
evening. A chance of thunderstorms. A chance of light showers
after midnight. Waves 2 ft or less.

$$

LMZ541-180200-
Rock Island Passage to Sturgeon Bay WI-
126 PM CDT Sun Aug 17 2025

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

.THIS AFTERNOON...NE wind 10 to 20 kts with gusts to around
25 kts. Mostly sunny. Waves 3 to 5 ft.
.TONIGHT...E wind 10 to 20 kts veering SE after midnight. Gusts
to around 25 kts. A chance of light showers and thunderstorms
after midnight. Waves 3 to 5 ft.
.MONDAY...SE wind 10 to 20 kts with gusts to around 25 kts. Light
showers likely and a chance of thunderstorms. Waves 3 to 5 ft
subsiding to 1 to 3 ft in the afternoon.
.MONDAY NIGHT...S wind 10 to 20 kts. Showers likely in the
evening. A chance of thunderstorms. A chance of light showers
after midnight. Waves 1 to 3 ft.

$$

LMZ542-543-180200-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
126 PM CDT Sun Aug 17 2025

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

.THIS AFTERNOON...NE wind 15 to 25 kts. Partly cloudy. Waves 4 to
7 ft.
.TONIGHT...NE wind 10 to 20 kts veering SE after midnight. Gusts
to around 25 kts. A chance of light showers and thunderstorms
after midnight. Waves 4 to 7 ft.
.MONDAY...S wind 10 to 20 kts with gusts to around 25 kts. Light
showers likely in the morning. A chance of thunderstorms. A
chance of light showers in the afternoon. Waves 4 to 7 ft
subsiding to 3 to 5 ft in the afternoon.
.MONDAY NIGHT...S wind 10 to 15 kts. Showers likely in the
evening. A chance of thunderstorms. A chance of light showers
after midnight. Waves 2 to 4 ft.

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.