934 FZUS53 KGRB 171109 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 609 AM CDT Fri Apr 17 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-171600- 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- 609 AM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...S wind 10 to 15 kts increasing to 15 to 25 kts early in the afternoon. Waves 2 ft or less building to 2 to 4 ft in the afternoon. Areas of dense fog. a chance of showers and thunderstorms in the afternoon. .TONIGHT...S wind 15 to 25 kts veering W 10 to 20 kts after midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Rain showers and a chance of thunderstorms in the evening, then a slight chance of showers after midnight. .SATURDAY...W wind 15 to 25 kts. Waves 1 to 3 ft. Partly cloudy. A Small Craft Advisory may be needed. .SATURDAY NIGHT...NW wind 10 to 20 kts. Waves 1 to 3 ft. Partly cloudy. $$ LMZ541-171600- Rock Island Passage to Sturgeon Bay WI- 609 AM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S wind 10 to 15 kts increasing to 15 to 25 kts early in the afternoon. Waves 1 to 3 ft building to 4 to 7 ft in the afternoon. Areas of dense fog. .TONIGHT...S wind 15 to 25 kts veering W after midnight. Waves 4 to 7 ft. Rain showers and a chance of thunderstorms in the evening, then a chance of showers after midnight. .SATURDAY...W wind 10 to 15 kts. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy. .SATURDAY NIGHT...NW wind 10 to 20 kts. Waves 1 to 3 ft. Partly cloudy. $$ LMZ542-543-171600- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 609 AM CDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON THROUGH SATURDAY MORNING... .TODAY...S wind 10 to 15 kts increasing to 15 to 25 kts in the late morning and afternoon. Waves 1 to 3 ft building to 4 to 7 ft in the afternoon. Areas of dense fog. a slight chance of showers and thunderstorms in the afternoon. .TONIGHT...S wind to 30 kts veering W 15 to 25 kts after midnight. Waves 5 to 8 ft subsiding to 4 to 7 ft after midnight. Rain showers and a chance of thunderstorms in the evening, then a chance of showers after midnight. .SATURDAY...W wind 15 to 25 kts. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy. .SATURDAY NIGHT...W wind 15 to 25 kts decreasing to 10 to 15 kts in the late evening and overnight. Waves 1 to 3 ft. Mostly clear. A Small Craft Advisory may be needed. $$ See Lake Michigan Open Lake Forecast for Sunday through Tuesday. Wave height forecast is for ice free areas.  343 FZUS53 KGRR 171158 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 758 AM EDT Fri Apr 17 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-172000- Pentwater to Manistee MI- 758 AM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... .TODAY...South winds 5 to 15 knots increasing to 15 to 20 knots early in the afternoon. Partly sunny. Widespread dense fog in the morning. Waves 2 to 3 feet. .TONIGHT...South winds to 30 knots veering southwest after midnight. Rain showers and a chance of thunderstorms. Patchy fog. Waves 4 to 6 feet. .SATURDAY...West winds to 30 knots. Partly sunny with a slight chance of rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest winds 15 to 25 knots. Mostly sunny. Waves 4 to 6 feet. .MONDAY...East winds around 10 knots veering southwest in the late morning and afternoon. Sunny. Waves 1 to 3 feet. .TUESDAY...South winds to 30 knots. Mostly sunny. Waves 6 to 8 feet. $$ LMZ848-172000- Whitehall to Pentwater MI- 758 AM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... .TODAY...South winds 5 to 15 knots increasing to 15 to 20 knots early in the afternoon. Partly sunny. Widespread dense fog in the morning. Waves 2 to 3 feet. .TONIGHT...South winds to 30 knots veering southwest after midnight. Rain showers and a chance of thunderstorms. Patchy fog. Waves 4 to 6 feet. .SATURDAY...West winds to 30 knots. Partly sunny with rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest winds 15 to 25 knots. Mostly sunny. Waves 4 to 6 feet. .MONDAY...East winds around 10 knots veering southwest early in the afternoon. Sunny. Waves 1 to 3 feet. .TUESDAY...South winds to 30 knots. Mostly sunny. Waves 6 to 9 feet. $$ LMZ847-172000- Grand Haven to Whitehall MI- 758 AM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... .TODAY...Southeast winds 5 to 15 knots increasing to 15 to 20 knots early in the afternoon. Partly sunny. Widespread dense fog in the morning. Waves 1 to 3 feet. .TONIGHT...South winds to 30 knots veering southwest after midnight. Rain showers and a chance of thunderstorms. Patchy dense fog. Waves 4 to 6 feet. .SATURDAY...West winds to 30 knots. Partly sunny with rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 5 to 7 feet. .SUNDAY...Northwest winds 15 to 25 knots. Sunny. Waves 5 to 7 feet. .MONDAY...Northeast winds around 10 knots veering southwest early in the afternoon. Sunny. Waves around 1 foot. .TUESDAY...South winds to 30 knots. Mostly sunny. Waves 6 to 9 feet. $$ LMZ846-172000- Holland to Grand Haven MI- 758 AM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... .TODAY...Southeast winds 5 to 15 knots veering south 15 to 20 knots early in the afternoon. Partly sunny. Widespread dense fog in the morning. Waves 1 to 2 feet. .TONIGHT...South winds to 30 knots. Rain showers and a chance of thunderstorms. Patchy fog. Waves 2 to 3 feet building to 3 to 5 feet in the late evening and overnight. .SATURDAY...West winds to 30 knots. Partly sunny with rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...West winds to 30 knots. Partly cloudy. Waves 5 to 7 feet. .SUNDAY...Northwest winds to 30 knots. Mostly sunny. Waves 5 to 7 feet. .MONDAY...Northeast winds around 10 knots veering southeast in the late morning and early afternoon, then veering southwest early in the afternoon. Sunny. Waves around 1 foot. .TUESDAY...Southwest winds to 30 knots. Mostly sunny. Waves 6 to 8 feet. $$ LMZ845-172000- South Haven to Holland MI- 758 AM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... .TODAY...Southeast winds 5 to 15 knots veering south 15 to 20 knots early in the afternoon. Partly sunny. Widespread dense fog in the morning. Waves around 1 foot. .TONIGHT...South winds 20 to 25 knots. Rain showers and a chance of thunderstorms. Patchy fog. Waves 1 to 3 feet building to 3 to 5 feet in the late evening and overnight. .SATURDAY...West winds to 30 knots. Partly sunny with rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...Northwest winds to 30 knots. Partly cloudy. Waves 5 to 7 feet. .SUNDAY...Northwest winds 15 to 25 knots. Mostly sunny. Waves 5 to 7 feet. .MONDAY...Northeast winds around 10 knots backing west early in the afternoon. Sunny. Waves 1 to 2 feet. .TUESDAY...Southwest winds to 30 knots. Mostly sunny. Waves 5 to 7 feet. $$ LMZ844-172000- St Joseph to South Haven MI- 758 AM EDT Fri Apr 17 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH SUNDAY MORNING... .TODAY...Southeast winds 5 to 15 knots veering south 15 to 20 knots early in the afternoon. Partly sunny. Widespread dense fog in the morning. Waves 1 to 2 feet. .TONIGHT...South winds 20 to 25 knots. Rain showers and a chance of thunderstorms. Patchy fog. Waves 2 to 4 feet. .SATURDAY...West winds to 30 knots. Partly sunny with rain showers. Waves 4 to 6 feet. .SATURDAY NIGHT...Northwest winds 20 to 25 knots. Mostly clear. Waves 4 to 6 feet. .SUNDAY...Northwest winds 15 to 25 knots. Sunny. Waves 4 to 6 feet. .MONDAY...Northeast winds around 10 knots backing northwest early in the afternoon. Sunny. Waves 1 to 2 feet. .TUESDAY...Southwest winds 15 to 25 knots. Mostly sunny. Waves 3 to 5 feet. $$