299 FZUS53 KDTX 231339 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 939 AM EDT Sun Aug 23 2026 For waters within five nautical miles of shore Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LHZ422-232145- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 939 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...Northwest winds 20 to 25 knots. Gusts to 30 knots late in the morning then Gusts to 30 knots late in the afternoon. Mostly sunny late in the morning becoming partly cloudy. Waves 2 to 4 feet. .TONIGHT...Northwest winds to 30 knots diminishing to 20 to 25 knots with gusts to 30 knots in the late evening and overnight. Partly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .MONDAY...West winds 20 to 25 knots becoming northwest 15 to 20 knots early in the afternoon. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-232145- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 939 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northwest winds 20 to 25 knots with gusts to 30 knots. Mostly sunny late in the morning becoming partly cloudy. A slight chance of showers in the afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet. .TONIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots until early morning. Partly cloudy with a slight chance of showers and thunderstorms early in the evening, then mostly cloudy with a slight chance of showers in the late evening and overnight. Waves 5 to 7 feet. Waves occasionally around 10 feet. .MONDAY...Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots early in the afternoon. Partly cloudy until late afternoon becoming mostly cloudy. A slight chance of showers early in the morning. Waves 4 to 6 feet. Waves occasionally around 8 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots. Mostly clear. Waves 3 to 5 feet subsiding to 2 to 4 feet after midnight. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-232145- Port Austin to Harbor Beach MI- 939 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northwest winds 20 to 25 knots with gusts to 30 knots. Partly cloudy. A chance of showers and a slight chance of thunderstorms in the afternoon. Waves 6 to 9 feet. Waves occasionally around 12 feet. .TONIGHT...Northwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy becoming partly cloudy in the late evening and early morning becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms until early morning, then a chance of showers after midnight. Waves 6 to 9 feet. Waves occasionally around 12 feet. .MONDAY...Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots early in the afternoon. Mostly cloudy. A chance of showers early in the morning. Waves 5 to 7 feet. Waves occasionally around 10 feet. .MONDAY NIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly cloudy early in the evening becoming mostly clear. Waves 4 to 6 feet. Waves occasionally around 8 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-232145- Harbor Beach to Port Sanilac MI- 939AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots late in the afternoon. Partly cloudy. A slight chance of showers and thunderstorms late in the morning, then a chance of showers and thunderstorms in the afternoon. Waves 5 to 7 feet. Waves occasionally around 10 feet. .TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy until early morning becoming mostly cloudy. A chance of showers and thunderstorms early in the evening, then a slight chance of thunderstorms in the late evening and early morning. A slight chance of showers in the late evening and overnight. Waves 5 to 7 feet. Waves occasionally around 10 feet. .MONDAY...West winds 20 to 25 knots with gusts to 30 knots becoming northwest 15 to 20 knots early in the afternoon. Partly cloudy until late afternoon becoming mostly cloudy. A slight chance of showers early in the morning. Waves 4 to 6 feet. Waves occasionally around 8 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots. Mostly cloudy early in the evening becoming mostly clear. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-232145- Port Sanilac to Port Huron MI- 939 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northwest winds 20 to 25 knots diminishing to 15 to 20 knots late in the afternoon. Partly cloudy. A chance of showers and thunderstorms in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. .TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy. A chance of showers and thunderstorms early in the evening, then a slight chance of showers in the late evening and overnight. A slight chance of waterspouts in the late evening and early morning. Waves 2 to 4 feet. .MONDAY...West winds 15 to 20 knots increasing to 20 to 25 knots in the late morning and early afternoon, then becoming northwest 15 to 20 knots early in the afternoon. Partly cloudy until late afternoon becoming mostly cloudy. A slight chance of showers early in the morning. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots diminishing to 5 to 10 knots in the late evening and early morning, then increasing to 10 to 15 knots after midnight. Mostly cloudy early in the evening then clearing. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-232145- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 939 AM EDT Sun Aug 23 2026 .REST OF TODAY...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...Northwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Partly cloudy early in the evening then clearing. A slight chance of showers and thunderstorms early in the evening. Waves 1 to 3 feet. .MONDAY...West winds 10 to 15 knots. Sunny. Waves 1 to 3 feet. .MONDAY NIGHT...West winds 10 to 15 knots becoming northwest 5 to 10 knots in the late evening and overnight. Mostly clear. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 70 degrees. $$ SS You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes  377 FZUS53 KGRB 231341 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 841 AM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ522-231600- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 841 AM CDT Sun Aug 23 2026 .TODAY...N wind 10 to 15 kts. Waves 1 to 3 ft. Mostly sunny in the morning then becoming partly cloudy. .TONIGHT...N wind 10 to 15 kts backing NW 5 to 10 kts after midnight. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 5 to 10 kts. Waves 2 ft or less. Sunny in the morning then becoming partly cloudy. .MONDAY NIGHT...SE wind around 5 kts veering SW after midnight. Waves 2 ft or less. Partly cloudy. $$ LMZ521-231600- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- 841 AM CDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...N wind 10 to 20 kts. Waves 2 to 4 ft. Mostly sunny in the morning then becoming partly cloudy. .TONIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Clear. .MONDAY...NW wind 10 to 15 kts. Waves 1 to 3 ft. Mostly sunny. .MONDAY NIGHT...E wind 5 to 10 kts. Waves 2 ft or less. Partly cloudy. $$ LMZ542-543-231600- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 841 AM CDT Sun Aug 23 2026 .TODAY...NW wind 10 to 20 kts. Waves 1 to 3 ft. Sunny in the morning then becoming partly cloudy. .TONIGHT...N wind 10 to 15 kts backing NW after midnight. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...S wind 5 to 10 kts veering SW after midnight. Waves 2 ft or less. Partly cloudy. $$ LMZ541-231600- Rock Island Passage to Sturgeon Bay WI- 841 AM CDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...N wind 15 to 25 kts. Waves 2 to 4 ft. A chance of sprinkles in the afternoon. .TONIGHT...NW wind 10 to 15 kts. Waves 1 to 3 ft. Clear. .MONDAY...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny. .MONDAY NIGHT...NE wind 5 to 10 kts. Waves 2 ft or less. Partly cloudy. $$ See Lake Michigan Open Lake Forecast for Tuesday through Thursday.  373 FZUS53 KGRR 231341 NSHGRR Nearshore Marine Forecast National Weather Service Grand Rapids MI 941 AM EDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ849-232100- Pentwater to Manistee MI- 941 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Northwest winds 20 to 25 knots. Mostly sunny. Waves 4 to 6 feet. .TONIGHT...North winds 15 to 25 knots. Partly cloudy. Waves 3 to 5 feet. .MONDAY...Northwest winds 10 to 20 knots. Sunny. Waves 3 to 5 feet subsiding to 2 to 4 feet early in the afternoon. .MONDAY NIGHT...Northwest winds 5 to 15 knots backing south after midnight. Partly cloudy. Waves 1 to 3 feet. .TUESDAY...South winds 5 to 10 knots veering southwest 10 to 20 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet. .WEDNESDAY...South winds to 30 knots. Partly sunny with a chance of showers and thunderstorms. Waves 4 to 6 feet. .THURSDAY...Northwest winds 10 to 20 knots. Mostly sunny. Waves 2 to 4 feet. $$ LMZ848-232100- Whitehall to Pentwater MI- 941 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Northwest winds to 30 knots. Mostly sunny. Waves 5 to 7 feet. .TONIGHT...North winds 15 to 25 knots. Partly cloudy. Waves 3 to 5 feet. .MONDAY...Northwest winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots backing southwest 5 to 10 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .TUESDAY...Southwest winds 5 to 15 knots. Mostly sunny. Waves 1 to 2 feet. .WEDNESDAY...South winds 20 to 25 knots. Partly sunny with rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .THURSDAY...Northwest winds 15 to 20 knots. Mostly sunny. Waves 2 to 4 feet. $$ LMZ847-232100- Grand Haven to Whitehall MI- 941 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Northwest winds to 30 knots. Mostly sunny. Waves 5 to 7 feet. .TONIGHT...North winds 15 to 25 knots decreasing to 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 4 to 6 feet subsiding to 1 to 3 feet. .MONDAY...Northwest winds 15 to 25 knots. Sunny. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 10 to 20 knots decreasing to 5 to 10 knots in the late evening and early morning, then backing west after midnight. Partly cloudy. Waves 2 to 4 feet. .TUESDAY...Southwest winds 5 to 15 knots. Mostly sunny. Waves around 1 foot. .WEDNESDAY...South winds 20 to 25 knots. Partly sunny with rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .THURSDAY...Northwest winds 15 to 20 knots. Sunny. Waves 2 to 4 feet. $$ LMZ846-232100- Holland to Grand Haven MI- 941 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Northwest winds to 30 knots. Sunny. Waves 5 to 7 feet. .TONIGHT...North winds 15 to 25 knots decreasing to 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 4 to 6 feet subsiding to 1 to 3 feet. .MONDAY...Northwest winds 10 to 20 knots. Sunny. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 15 to 20 knots becoming west around 5 knots. Partly cloudy. Waves 2 to 4 feet. .TUESDAY...Southwest winds 5 to 15 knots. Mostly sunny. Waves around 1 foot. .WEDNESDAY...Southwest winds 20 to 25 knots. Partly sunny with a chance of showers and thunderstorms. Waves 3 to 5 feet. .THURSDAY...Northwest winds 15 to 20 knots. Mostly sunny. Waves 2 to 4 feet. $$ LMZ845-232100- South Haven to Holland MI- 941 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Northwest winds 20 to 25 knots. Sunny. Waves 5 to 7 feet. .TONIGHT...North winds 10 to 20knots. Mostly clear. Waves 4 to 6 feet subsiding to 2 to 4 feet after midnight. .MONDAY...Northwest winds 10 to 20 knots. Sunny. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 10 to 15 knots backing west around 5 knots after midnight. Mostly clear. Waves 2 to 4 feet. .TUESDAY...Southwest winds 5 to 10 knots. Sunny. Waves 1 foot or less. .WEDNESDAY...Southwest winds 15 to 20 knots. Partly sunny with a chance of showers and thunderstorms. Waves 3 to 5 feet. .THURSDAY...Northwest winds 15 to 20 knots. Sunny. Waves 2 to 4 feet. $$ LMZ844-232100- St Joseph to South Haven MI- 941 AM EDT Sun Aug 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Northwest winds 15 to 25 knots. Sunny. Waves 5 to 7 feet. .TONIGHT...North winds 10 to 20 knots veering northeast 5 to 10 knots after midnight. Mostly clear. Waves 4 to 6 feet subsiding to 2 to 4 feet after midnight. .MONDAY...North winds 5 to 15 knots backing northwest in the late morning and afternoon. Sunny. Waves 2 to 4 feet. .MONDAY NIGHT...Northwest winds 5 to 15 knots backing west around 5 knots after midnight. Mostly clear. Waves 1 to 3 feet. .TUESDAY...Southwest winds 5 to 10 knots veering west early in the afternoon. Sunny. Waves 1 foot or less. .WEDNESDAY...Southwest winds 15 to 20 knots. Partly sunny. Waves 1 to 3 feet. .THURSDAY...Northwest winds 10 to 15 knots. Sunny. Waves 2 to 4 feet. $$