FZUS53 KGRB 291318 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 818 AM CDT Sun Mar 29 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-291600- 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- 818 AM CDT Sun Mar 29 2026 .TODAY...SW wind 5 to 10 kts backing S early in the afternoon. Waves 2 ft or less. Mostly cloudy in the morning then becoming mostly sunny. .TONIGHT...S wind 5 to 10 kts veering SW after midnight. Waves 2 ft or less. Mostly clear in the evening then becoming mostly cloudy. .MONDAY...N wind 5 to 10 kts veering NE 10 to 15 kts in the late morning and afternoon. Waves 2 ft or less. Partly sunny. .MONDAY NIGHT...NE wind 10 to 15 kts. Waves 2 ft or less. Rain showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. $$ LMZ541-291600- Rock Island Passage to Sturgeon Bay WI- 818 AM CDT Sun Mar 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... .TODAY...SW wind 5 to 10 kts backing S 10 to 15 kts early in the afternoon. Waves 3 to 5 ft. Mostly cloudy in the morning then becoming partly cloudy. .TONIGHT...S wind 10 to 15 kts veering SW 5 to 10 kts after midnight. Waves 3 to 5 ft. Mostly clear in the evening then becoming mostly cloudy. A Small Craft Advisory may be needed. .MONDAY...N wind 5 to 10 kts veering NE 10 to 15 kts in the late morning and afternoon. Waves 2 to 4 ft. Partly sunny. .MONDAY NIGHT...NE wind 10 to 20 kts. Waves 2 to 4 ft. Rain showers likely in the evening. A chance of thunderstorms. A chance of showers after midnight. $$ LMZ542-543-291600- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 818 AM CDT Sun Mar 29 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... .TODAY...S wind 10 to 15 kts. Waves 2 to 4 ft. Partly cloudy. .TONIGHT...SW wind 10 to 15 kts. Waves 3 to 5 ft. Clear in the evening then becoming partly cloudy. A Small Craft Advisory may be needed. .MONDAY...SW wind 5 to 10 kts backing E 10 to 15 kts in the late morning and afternoon. Waves 1 to 3 ft. Partly cloudy. .MONDAY NIGHT...NE wind 10 to 15 kts. Waves 3 to 5 ft. Rain showers likely and a chance of thunderstorms. A Small Craft Advisory may be needed. $$ See Lake Michigan Open Lake Forecast for Tuesday through Thursday. Wave height forecast is for ice free areas.