FZUS53 KGRB 121936 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 236 PM CDT Tue May 12 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-122200- 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- 236 PM CDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...S wind 15 to 25 kts. Waves 2 to 4 ft. A chance of showers and a slight chance of thunderstorms. .TONIGHT...W wind 10 to 15 kts veering NW 15 to 25 kts in the late evening and overnight. Waves 1 to 3 ft building to 3 to 5 ft after midnight. A chance of showers and a slight chance of thunderstorms in the evening. .WEDNESDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in the afternoon. Waves 3 to 5 ft. Mostly cloudy. .WEDNESDAY NIGHT...N wind 5 to 10 kts. Waves 1 to 3 ft. Clear. $$ LMZ541-122200- Rock Island Passage to Sturgeon Bay WI- 236 PM CDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...S wind to 30 kts. Waves 6 to 10 ft. A chance of showers and a slight chance of thunderstorms. .TONIGHT...SW wind 10 to 15 kts veering NW 15 to 25 kts in the late evening and overnight. Waves 5 to 8 ft. A chance of showers and a slight chance of thunderstorms in the evening. .WEDNESDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in the afternoon. Waves 2 to 4 ft. Mostly cloudy. .WEDNESDAY NIGHT...N wind 10 to 15 kts. Waves 2 ft or less. Clear. $$ LMZ542-543-122200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 236 PM CDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .THIS AFTERNOON...S wind to 30 kts. Waves 6 to 10 ft. A chance of showers and thunderstorms. .TONIGHT...W wind 10 to 20 kts veering NW 15 to 25 kts after midnight. Waves 4 to 7 ft. A slight chance of showers and thunderstorms in the evening. .WEDNESDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in the afternoon. Waves 1 to 3 ft. Mostly cloudy. .WEDNESDAY NIGHT...NW wind 5 to 10 kts. Waves 2 ft or less. Clear. $$ See Lake Michigan Open Lake Forecast for Friday through Sunday. Wave height forecast is for ice free areas.