Nearshore Marine Forecast
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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454 FZUS53 KGRB 172003 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 303 PM CDT Fri Oct 17 2025 For waters within five nautical miles of the shore on Lake Michigan LMZ521-522-180100- 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- 303 PM CDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT SATURDAY... .REST OF THIS AFTERNOON...S wind 10 to 20 kts with gusts to around 25 kts. Mostly cloudy. Waves 1 to 3 ft. .TONIGHT...SW wind 10 to 20 kts with gusts to around 25 kts. A chance of rain showers and a slight chance of thunderstorms. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. .SATURDAY...SW wind 5 to 10 kts. Partly cloudy in the morning then clearing. Waves 2 ft or less. .SATURDAY NIGHT...SW wind 5 to 10 kts veering N 10 to 20 kts after midnight. Light rain showers likely after midnight. Waves 1 to 3 ft. .SUNDAY...NW wind 10 to 20 kts with gusts to around 25 kts. A chance of rain showers. Waves 2 to 4 ft subsiding to 1 to 3 ft late in the afternoon. A Small Craft Advisory may be needed. $$ LMZ541-180100- Rock Island Passage to Sturgeon Bay WI- 303 PM CDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .REST OF THIS AFTERNOON...S wind 15 to 25 kts with gusts to around 30 kts. Mostly cloudy. Waves 6 to 10 ft. .TONIGHT...S wind 15 to 25 kts with gusts to around 30 kts. A chance of rain showers and a slight chance of thunderstorms. Waves 6 to 10 ft subsiding to 4 to 7 ft. .SATURDAY...SW wind 5 to 10 kts. Partly cloudy. Waves 4 to 7 ft subsiding to 3 to 5 ft in the afternoon. .SATURDAY NIGHT...SW wind 5 to 10 kts veering N 10 to 20 kts after midnight. Light rain showers likely after midnight. Waves 1 to 3 ft. .SUNDAY...NW wind 15 to 25 kts. Light rain showers likely in the morning. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. A Small Craft Advisory may be needed. $$ LMZ542-543-180100- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 303 PM CDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY AFTERNOON... .REST OF THIS AFTERNOON...S wind 15 to 25 kts with gusts to around 30 kts. Mostly cloudy. Waves 4 to 7 ft building to 5 to 8 ft early in the evening. .TONIGHT...S wind 10 to 20 kts with gusts to around 25 kts. A chance of rain showers and a slight chance of thunderstorms. Waves 5 to 8 ft subsiding to 4 to 7 ft. .SATURDAY...SW wind 5 to 10 kts. Partly cloudy. Waves 3 to 5 ft subsiding to 1 to 3 ft. .SATURDAY NIGHT...SW wind 5 to 10 kts veering NW 10 to 20 kts with gusts to around 25 kts after midnight. Rain showers likely after midnight. Waves 1 to 3 ft. .SUNDAY...NW wind 15 to 25 kts with gusts to around 30 kts. A chance of rain showers. Waves 2 to 4 ft. $$ See Lake Michigan Open Lake Forecast for Monday through Wednesday.