Nearshore Marine Forecast
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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346 FZUS53 KGRB 292120 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 420 PM CDT Mon Sep 29 2025 For waters within five nautical miles of the shore on Lake Michigan LMZ521-522-300100- 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- 420 PM CDT Mon Sep 29 2025 .REST OF THIS AFTERNOON...S wind around 5 kts. Sunny. Waves 2 ft or less. .TONIGHT...SE wind around 5 kts backing NE after midnight. Patchy fog after midnight. Waves 2 ft or less. .TUESDAY...NE wind 10 to 15 kts. Patchy fog in the morning. Waves 2 ft or less. .TUESDAY NIGHT...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. $$ LMZ541-300100- Rock Island Passage to Sturgeon Bay WI- 420 PM CDT Mon Sep 29 2025 .REST OF THIS AFTERNOON...S wind 5 to 10 kts. Sunny. Waves 2 ft or less. .TONIGHT...S wind around 5 kts backing NE after midnight. Patchy fog after midnight. Waves 2 ft or less. .TUESDAY...E wind 5 to 10 kts backing NE 10 to 20 kts in the afternoon. Patchy fog in the morning. Waves 1 to 3 ft building to 2 to 4 ft late in the afternoon. .TUESDAY NIGHT...E wind 10 to 20 kts. Partly cloudy in the evening then becoming mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. .WEDNESDAY...E wind 10 to 15 kts. Partly sunny. Waves 2 ft or less. $$ LMZ542-543-300100- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 420 PM CDT Mon Sep 29 2025 .REST OF THIS AFTERNOON...S wind 5 to 10 kts. Sunny. Waves 2 ft or less. .TONIGHT...S wind around 5 kts backing NE after midnight. Patchy fog after midnight. Waves 2 ft or less. .TUESDAY...NE wind 5 to 10 kts. Areas of dense fog in the morning. Waves 2 ft or less. .TUESDAY NIGHT...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. $$ See Lake Michigan Open Lake Forecast for Thursday through Saturday.