FZUS53 KGRB 210656 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 156 AM CDT Sat Mar 21 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-211000- 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- 156 AM CDT Sat Mar 21 2026 .REST OF THE NIGHT...E wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy. .SATURDAY...SE wind 10 to 15 kts. Waves 2 ft or less. Mostly cloudy. .SATURDAY NIGHT...NE wind 5 to 10 kts backing N 10 to 15 kts in the late evening and overnight. Waves 2 ft or less. Patchy dense fog in the evening. a chance of light rain after midnight. .SUNDAY...N wind 10 to 20 kts. Waves 2 ft or less. Mostly cloudy. $$ LMZ541-211000- Rock Island Passage to Sturgeon Bay WI- 156 AM CDT Sat Mar 21 2026 .REST OF THE NIGHT...NE wind around 5 kts veering E after midnight. Waves 2 ft or less. Mostly cloudy. .SATURDAY...S wind 10 to 15 kts. Waves 1 to 3 ft building to 2 to 4 ft in the afternoon. Mostly cloudy. .SATURDAY NIGHT...S wind 5 to 10 kts veering N 10 to 15 kts in the late evening and overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. A chance of light rain after midnight. .SUNDAY...N wind 15 to 25 kts. Waves 2 to 4 ft. Mostly cloudy. A Small Craft Advisory may be needed. $$ LMZ542-543-211000- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 156 AM CDT Sat Mar 21 2026 .REST OF THE NIGHT...NE wind 5 to 10 kts veering E after midnight. Waves 2 ft or less. Mostly cloudy. .SATURDAY...SE wind 10 to 15 kts veering S 15 to 25 kts mid-day, then decreasing to 10 to 15 kts early in the afternoon. Waves 1 to 3 ft building to 3 to 5 ft in the afternoon. Mostly cloudy. .SATURDAY NIGHT...W wind 10 to 15 kts veering N in the late evening and overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. A chance of light rain after midnight. .SUNDAY...N wind 15 to 25 kts. Waves 4 to 7 ft. Mostly cloudy. A Small Craft Advisory may be needed. $$ See Lake Michigan Open Lake Forecast for Monday through Wednesday. Wave height forecast is for ice free areas.