FZUS53 KGRB 190741 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 241 AM CDT Sun Apr 19 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-191000- 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- 241 AM CDT Sun Apr 19 2026 .REST OF THE NIGHT...W wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy. .SUNDAY...NW wind 10 to 15 kts. Waves 2 ft or less. Partly sunny. .SUNDAY NIGHT...NW wind 5 to 10 kts. Waves 2 ft or less. Mostly clear. .MONDAY...W wind 5 to 10 kts backing SW mid-day, then backing S 10 to 20 kts early in the afternoon. Waves 1 to 3 ft. Partly cloudy. $$ LMZ541-191000- Rock Island Passage to Sturgeon Bay WI- 241 AM CDT Sun Apr 19 2026 .REST OF THE NIGHT...W wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy. .SUNDAY...NW wind 10 to 15 kts. Waves 2 ft or less. Partly sunny. .SUNDAY NIGHT...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly clear. .MONDAY...W wind 5 to 10 kts backing S 10 to 15 kts mid-day, then increasing to 15 to 25 kts early in the afternoon. Waves 2 ft or less building to 3 to 5 ft in the afternoon. Mostly sunny in the morning then becoming partly cloudy. A Small Craft Advisory may be needed. $$ LMZ542-543-191000- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 241 AM CDT Sun Apr 19 2026 .REST OF THE NIGHT...W wind 10 to 15 kts. Waves 2 ft or less. Partly cloudy. .SUNDAY...NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. A chance of flurries in the morning. A chance of sprinkles. .SUNDAY NIGHT...N wind 10 to 15 kts. Waves 2 ft or less. Mostly clear. .MONDAY...SW wind 5 to 10 kts backing S 10 to 15 kts mid-day, then increasing to 15 to 25 kts early in the afternoon. Waves 2 ft or less building to 3 to 5 ft in the afternoon. Mostly sunny in the morning then becoming partly cloudy. 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.