FZUS53 KGRB 201825 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 125 PM CDT Fri Mar 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-202200- 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- 125 PM CDT Fri Mar 20 2026 .THIS AFTERNOON...N wind 5 to 10 kts. Waves 2 ft or less. Mostly sunny. .TONIGHT...NE wind 5 to 10 kts veering E after midnight. Waves 2 ft or less. A slight chance of light freezing rain after midnight. .SATURDAY...SE wind 10 to 15 kts. Waves 2 ft or less. Mostly cloudy. .SATURDAY NIGHT...S wind 5 to 10 kts veering N 10 to 15 kts in the late evening and overnight. Waves 2 ft or less. Light rain likely after midnight. $$ LMZ541-202200- Rock Island Passage to Sturgeon Bay WI- 125 PM CDT Fri Mar 20 2026 .THIS AFTERNOON...N wind 5 to 10 kts. Waves 2 ft or less. Mostly sunny. .TONIGHT...N wind 5 to 10 kts veering NE after midnight. Waves 2 ft or less. A slight chance of light freezing rain after midnight. .SATURDAY...SE wind 10 to 15 kts veering S early in the afternoon. Waves 1 to 3 ft. Mostly cloudy. .SATURDAY NIGHT...S wind 5 to 10 kts veering NW, then veering N 10 to 15 kts after midnight. Waves 1 to 3 ft. Light rain likely after midnight. $$ LMZ542-543-202200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 125 PM CDT Fri Mar 20 2026 .THIS AFTERNOON...N wind 5 to 10 kts. Waves 2 ft or less. Mostly sunny. .TONIGHT...NE wind 5 to 10 kts veering E after midnight. Waves 2 ft or less. Partly cloudy in the evening then becoming mostly cloudy. .SATURDAY...S wind 10 to 15 kts. Waves 1 to 3 ft building to 2 to 4 ft in the afternoon. Partly sunny. .SATURDAY NIGHT...SW wind 5 to 10 kts veering NW, then veering N 10 to 15 kts after midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. A chance of light rain after midnight. $$ See Lake Michigan Open Lake Forecast for Sunday through Tuesday. Wave height forecast is for ice free areas.