Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 120633
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
133 AM CDT Sat Jul 12 2025

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

LMZ521-522-121300-
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-
133 AM CDT Sat Jul 12 2025

.OVERNIGHT...S wind 5 to 10 kts. Patchy fog. Showers and a slight
chance of thunderstorms. Waves 2 ft or less.
.TODAY...SW wind 5 to 10 kts. Light showers likely in the
morning. A chance of thunderstorms. A chance of light showers in
the afternoon. Waves 2 ft or less.
.TONIGHT...W wind 5 to 10 kts. Mostly clear. Waves 2 ft or less.
.SUNDAY...SW wind 5 to 10 kts. Patchy smoke. Waves 2 ft or less.

$$

LMZ541-121300-
Rock Island Passage to Sturgeon Bay WI-
133 AM CDT Sat Jul 12 2025

.OVERNIGHT...S wind 5 to 10 kts. Showers and a slight chance of
thunderstorms. Waves 2 ft or less.
.TODAY...S wind 5 to 10 kts veering SW 10 to 20 kts in the
afternoon. Showers likely in the morning. A chance of
thunderstorms. A chance of light showers in the afternoon. Waves
1 to 3 ft.
.TONIGHT...W wind 5 to 10 kts. Mostly clear. Waves 1 to 3 ft.
.SUNDAY...SW wind 5 to 10 kts. Patchy smoke. Waves 2 ft or less.

$$

LMZ542-543-121300-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
133 AM CDT Sat Jul 12 2025

.OVERNIGHT...S wind 5 to 10 kts. Patchy fog. Showers likely and a
slight chance of thunderstorms. Waves 2 ft or less.
.TODAY...SW wind 10 to 15 kts. A chance of light showers and
thunderstorms. Waves 2 ft or less.
.TONIGHT...W wind 5 to 10 kts. Patchy smoke in the evening. Waves
2 ft or less.
.SUNDAY...SW wind 5 to 10 kts. Patchy smoke in the afternoon.
Waves 2 ft or less.

$$

See Lake Michigan Open Lake Forecast for Monday through Wednesday.