FZUS53 KGRB 230556 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1256 AM CDT Thu Apr 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-231000- 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- 1256 AM CDT Thu Apr 23 2026 .REST OF THE NIGHT...E wind 5 to 10 kts veering SE after midnight. Waves 2 ft or less. Mostly clear. .THURSDAY...SE wind 10 to 15 kts. Waves 2 ft or less. Partly sunny. .THURSDAY NIGHT...SE wind 10 to 15 kts. Waves 1 to 3 ft. A chance of showers in the evening. A chance of thunderstorms. Rain showers likely after midnight. .FRIDAY...SE wind 10 to 15 kts backing N early in the afternoon. Waves 2 ft or less. Rain showers and a chance of thunderstorms. $$ LMZ541-231000- Rock Island Passage to Sturgeon Bay WI- 1256 AM CDT Thu Apr 23 2026 .REST OF THE NIGHT...E wind 10 to 15 kts veering SE after midnight. Waves 1 to 3 ft. Mostly clear. .THURSDAY...S wind 10 to 15 kts. Waves 2 to 4 ft. Patchy fog in the afternoon. .THURSDAY NIGHT...SE wind 10 to 20 kts. Waves 3 to 5 ft. Patchy fog in the evening. a chance of showers after midnight. A Small Craft Advisory may be needed. .FRIDAY...SE wind 10 to 20 kts backing N 10 to 15 kts early in the afternoon. Waves 4 to 7 ft. Rain showers and a chance of thunderstorms. A Small Craft Advisory may be needed. $$ LMZ542-543-231000- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1256 AM CDT Thu Apr 23 2026 .REST OF THE NIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Mostly clear. .THURSDAY...S wind 10 to 20 kts. Waves 2 to 4 ft building to 3 to 5 ft in the afternoon. Patchy fog in the afternoon. A Small Craft Advisory may be needed. .THURSDAY NIGHT...S wind 10 to 20 kts. Waves 4 to 7 ft. Patchy fog in the evening. a chance of showers and thunderstorms. A Small Craft Advisory may be needed. .FRIDAY...S wind 10 to 20 kts veering W 10 to 15 kts early in the afternoon. Waves 4 to 7 ft. Rain showers and a chance of thunderstorms. A Small Craft Advisory may be needed. $$ See Lake Michigan Open Lake Forecast for Saturday through Monday. Wave height forecast is for ice free areas.