FZUS53 KGRB 271729 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 1229 PM CDT Mon Apr 27 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-272200- 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- 1229 PM CDT Mon Apr 27 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...SE wind 10 to 20 kts. Waves 2 to 4 ft. Patchy fog. scattered showers late in the morning. Rain showers and scattered thunderstorms in the afternoon. .TONIGHT...S wind 15 to 25 kts decreasing to 10 to 15 kts, then veering SW 15 to 25 kts after midnight. Waves 2 to 4 ft. Patchy fog in the evening. scattered thunderstorms in the evening. Scattered showers. .TUESDAY...W wind 15 to 25 kts decreasing to 10 to 15 kts in the late morning and afternoon. Waves 1 to 3 ft. Partly sunny. .TUESDAY NIGHT...N wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy. $$ LMZ541-272200- Rock Island Passage to Sturgeon Bay WI- 1229 PM CDT Mon Apr 27 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...SE wind 10 to 15 kts increasing to 15 to 25 kts early in the afternoon. Waves 2 to 4 ft building to 4 to 7 ft in the afternoon. Patchy fog. isolated showers late in the morning. Numerous showers and scattered thunderstorms in the afternoon. .TONIGHT...S wind 15 to 25 kts veering SW after midnight. Waves 6 to 10 ft. Patchy fog in the evening. numerous showers and scattered thunderstorms in the evening, then a chance of showers after midnight. .TUESDAY...W wind 15 to 25 kts decreasing to 10 to 15 kts in the late morning and afternoon. Waves 4 to 7 ft subsiding to 2 to 4 ft in the afternoon. Partly sunny. .TUESDAY NIGHT...N wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy. $$ LMZ542-543-272200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 1229 PM CDT Mon Apr 27 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...SE wind 15 to 25 kts. Waves 6 to 10 ft. Patchy fog. scattered showers late in the morning. Numerous showers and scattered thunderstorms in the afternoon. .TONIGHT...S wind 15 to 25 kts veering SW after midnight. Waves 6 to 10 ft. Patchy fog in the evening. numerous showers and scattered thunderstorms in the evening, then a chance of showers after midnight. .TUESDAY...W wind 15 to 25 kts decreasing to 10 to 15 kts early in the afternoon. Waves 4 to 7 ft subsiding to 1 to 3 ft in the afternoon. Partly sunny. .TUESDAY NIGHT...NW wind 5 to 10 kts veering N in the late evening and overnight. Waves 2 ft or less. Mostly cloudy. $$ See Lake Michigan Open Lake Forecast for Wednesday through Friday. Wave height forecast is for ice free areas.