Nearshore Marine Forecast
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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500 FZUS53 KGRB 092137 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 437 PM CDT Thu Oct 9 2025 For waters within five nautical miles of the shore on Lake Michigan LMZ521-522-100100- 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- 437 PM CDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH SATURDAY MORNING... .REST OF THIS AFTERNOON...SE wind 10 to 15 kts. Sunny. Waves 2 ft or less. .TONIGHT...S wind 10 to 20 kts with gusts to around 25 kts. A chance of rain showers and a slight chance of thunderstorms after midnight. Waves 1 to 3 ft building to 2 to 4 ft after midnight. .FRIDAY...SW wind 10 to 20 kts veering W in the afternoon. Gusts to around 25 kts. A chance of rain showers. Waves 2 to 4 ft. .FRIDAY NIGHT...NW wind 10 to 20 kts with gusts to around 25 kts. A chance of rain showers in the evening. Waves 1 to 3 ft building to 2 to 4 ft after midnight. .SATURDAY...N wind 10 to 20 kts veering NE 5 to 10 kts in the afternoon. Partly sunny. Waves 1 to 3 ft. $$ LMZ541-100100- Rock Island Passage to Sturgeon Bay WI- 437 PM CDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH SATURDAY MORNING... .REST OF THIS AFTERNOON...S wind 10 to 20 kts. Sunny. Waves 1 to 3 ft. .TONIGHT...SW wind 10 to 20 kts. Gusts to around 25 kts increasing to 30 kts after midnight. A chance of rain showers and a slight chance of thunderstorms after midnight. Waves 1 to 3 ft building to 4 to 7 ft. .FRIDAY...SW wind 15 to 25 kts veering W in the afternoon. Gusts to around 30 kts. Light rain showers likely in the morning, then a chance of rain showers in the afternoon. Waves 4 to 7 ft subsiding to 3 to 5 ft late in the afternoon. .FRIDAY NIGHT...NW wind 15 to 25 kts veering N 10 to 20 kts after midnight. A chance of rain showers. Waves 3 to 5 ft subsiding to 2 to 4 ft after midnight. .SATURDAY...N wind 10 to 20 kts veering NE 5 to 10 kts in the afternoon. Mostly cloudy in the morning then becoming partly cloudy. Waves 1 to 3 ft. $$ LMZ542-543-100100- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 437 PM CDT Thu Oct 9 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING THROUGH SATURDAY MORNING... .REST OF THIS AFTERNOON...S wind 10 to 15 kts. Mostly sunny. Waves 1 to 3 ft. .TONIGHT...S wind 10 to 20 kts with gusts to around 25 kts. A chance of rain showers and a slight chance of thunderstorms after midnight. Waves 3 to 5 ft. .FRIDAY...SW wind 15 to 25 kts veering W 10 to 20 kts in the afternoon. A chance of rain showers. Waves 4 to 7 ft subsiding to 3 to 5 ft late in the afternoon. .FRIDAY NIGHT...NW wind 10 to 20 kts with gusts to around 25 kts. Mostly clear in the evening then becoming mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft in the late evening and overnight. .SATURDAY...NE wind 10 to 20 kts. Partly sunny. Waves 1 to 3 ft. $$ See Lake Michigan Open Lake Forecast for Sunday through Tuesday.