FZUS53 KGRB 220816 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 316 AM CDT Sun Mar 22 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-221600- 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- 316 AM CDT Sun Mar 22 2026 .EARLY THIS MORNING...N wind 10 to 15 kts. Waves 2 ft or less. A chance of flurries and a slight chance of light rain. .TODAY...N wind 15 to 25 kts decreasing to 10 to 15 kts early in the afternoon. Waves 2 ft or less. Mostly cloudy. .TONIGHT...N wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy. .MONDAY...NW wind 5 to 10 kts backing SW early in the afternoon. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...S wind 10 to 15 kts. Waves 2 ft or less. Mostly clear in the evening then becoming mostly cloudy. $$ LMZ541-221600- Rock Island Passage to Sturgeon Bay WI- 316 AM CDT Sun Mar 22 2026 .EARLY THIS MORNING...N wind 15 to 25 kts. Waves 2 to 4 ft. A chance of sprinkles and flurries. .TODAY...N wind 15 to 25 kts. Waves 3 to 5 ft. A chance of flurries in the morning. .TONIGHT...N wind 10 to 20 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Partly cloudy. .MONDAY...NW wind 5 to 10 kts backing SW early in the afternoon. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...S wind 10 to 20 kts. Waves 1 to 3 ft building to 3 to 5 ft after midnight. Mostly clear in the evening then becoming mostly cloudy. A Small Craft Advisory may be needed. $$ LMZ542-543-221600- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 316 AM CDT Sun Mar 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH LATE TONIGHT... .EARLY THIS MORNING...N wind 15 to 25 kts. Waves 2 to 4 ft. A slight chance of light rain. .TODAY...N wind 15 to 25 kts. Waves 4 to 7 ft. Mostly cloudy. .TONIGHT...N wind 15 to 25 kts decreasing to 10 to 15 kts after midnight. Waves 3 to 5 ft subsiding to 2 to 4 ft after midnight. Partly cloudy. .MONDAY...N wind 5 to 10 kts veering SE early in the afternoon. Waves 1 to 3 ft. Sunny. .MONDAY NIGHT...S wind 10 to 20 kts. Waves 1 to 3 ft building to 2 to 4 ft after midnight. Mostly clear in the evening then becoming mostly cloudy. $$ See Lake Michigan Open Lake Forecast for Tuesday through Thursday. Wave height forecast is for ice free areas.