Nearshore Marine Forecast
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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063 FZUS53 KGRB 300923 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 423 AM CDT Tue Sep 30 2025 For waters within five nautical miles of the shore on Lake Michigan LMZ521-522-301300- 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- 423 AM CDT Tue Sep 30 2025 .EARLY IN THE MORNING...NE wind around 5 kts. Patchy fog. Waves 2 ft or less. .TODAY...NE wind 10 to 15 kts. Patchy fog in the morning. Waves 2 ft or less. .TONIGHT...E wind 10 to 20 kts. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 ft. .WEDNESDAY...SE wind 5 to 10 kts. Partly sunny. Waves 2 ft or less. .WEDNESDAY NIGHT...SE wind 5 to 10 kts. Mostly cloudy. Waves 2 ft or less. $$ LMZ541-301300- Rock Island Passage to Sturgeon Bay WI- 423 AM CDT Tue Sep 30 2025 .EARLY IN THE MORNING...NE wind around 5 kts. Patchy fog. Waves 2 ft or less. .TODAY...E wind 5 to 10 kts backing NE 10 to 20 kts in the afternoon. Patchy fog in the morning. Waves 1 to 3 ft. .TONIGHT...E wind 10 to 20 kts with gusts to around 25 kts. Partly cloudy in the evening then becoming mostly cloudy. Waves 2 to 4 ft. A Small Craft Advisory may be needed. .WEDNESDAY...SE wind 10 to 20 kts backing E 5 to 10 kts in the afternoon. Partly sunny. Waves 1 to 3 ft. .WEDNESDAY NIGHT...SE wind 10 to 20 kts. Mostly cloudy. Waves 2 ft or less building to 2 to 4 ft after midnight. $$ LMZ542-543-301300- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 423 AM CDT Tue Sep 30 2025 .EARLY IN THE MORNING...NE wind around 5 kts. Patchy dense fog. Waves 2 ft or less. .TODAY...NE wind 5 to 10 kts. Patchy dense fog in the morning. Waves 2 ft or less. .TONIGHT...NE wind 10 to 15 kts veering SE 10 to 20 kts after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 ft building to 2 to 4 ft after midnight. .WEDNESDAY...SE wind 10 to 15 kts. Partly sunny. Waves 1 to 3 ft. .WEDNESDAY NIGHT...SE wind 10 to 20 kts with gusts to around 25 kts. Mostly cloudy. Waves 1 to 3 ft building to 3 to 5 ft after midnight. A Small Craft Advisory may be needed. $$ See Lake Michigan Open Lake Forecast for Thursday through Saturday.