FZUS53 KDTX 170709 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 309 AM EDT Sun May 17 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. LHZ422-171515- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 309 AM EDT Sun May 17 2026 .TODAY...Northeast winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Partly cloudy in the morning, then mostly cloudy with a chance of showers and a slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .TONIGHT...Northeast winds 15 to 20 knots becoming east 10 to 15 knots in the late evening and early morning, then becoming south 15 to 20 knots after midnight. Mostly cloudy with a chance of showers and a slight chance of thunderstorms until early morning, then partly cloudy after midnight. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. A chance of showers in the late morning and afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. A Small Craft Advisory may be needed. .MONDAY NIGHT...Southwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots in the late evening and overnight. Partly cloudy early in the evening. Light showers and a chance of thunderstorms. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-171515- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 309 AM EDT Sun May 17 2026 .TODAY...Northeast winds 5 to 10 knots increasing to 15 to 20 knots. Partly cloudy in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TONIGHT...Northeast winds 15 to 20 knots becoming east 10 to 15 knots in the late evening and early morning, then becoming south 15 to 20 knots after midnight. Mostly cloudy with a chance of showers and thunderstorms early in the evening, then mostly cloudy with a chance of thunderstorms and a slight chance of showers in the late evening and early morning. Partly cloudy after midnight. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest 20 to 25 knots with gusts to 30 knots in the late morning and afternoon. Partly cloudy early in the morning then clearing. A chance of showers early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. A Small Craft Advisory may be needed. .MONDAY NIGHT...Southwest winds 20 to 25 knots diminishing to 15 to 20 knots in the late evening and overnight. Mostly clear early in the evening becoming mostly cloudy. Light showers likely and a chance of thunderstorms. Waves 3 to 5 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-171515- Port Austin to Harbor Beach MI- 309 AM EDT Sun May 17 2026 .TODAY...North winds 5 to 10 knots veering to the northeast late in the afternoon. Partly cloudy in the morning, then mostly cloudy with a slight chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TONIGHT...East winds 10 to 15 knots veering to the south after midnight. Mostly cloudy until early morning becoming partly cloudy. A chance of showers and thunderstorms until early morning. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots. Partly cloudy becoming mostly sunny in the late morning and early afternoon becoming partly cloudy. A chance of showers early in the afternoon. Waves 2 to 4 feet. .MONDAY NIGHT...Southwest winds 15 to 20 knots. Partly cloudy early in the evening. Light showers and a chance of thunderstorms. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-171515- Harbor Beach to Port Sanilac MI- 309 AM EDT Sun May 17 2026 .TODAY...North winds 5 to 10 knots veering to the northeast in the afternoon. Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TONIGHT...Northeast winds 5 to 10 knots becoming southeast 10 to 15 knots in the late evening and overnight. Mostly cloudy. A slight chance of showers and thunderstorms until early morning. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots. Partly cloudy early in the morning becoming mostly sunny. A chance of showers early in the afternoon. Waves 2 to 4 feet. .MONDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Mostly clear early in the evening becoming mostly cloudy. Light showers likely and a chance of thunderstorms. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-171515- Port Sanilac to Port Huron MI- 309 AM EDT Sun May 17 2026 .TODAY...Northwest winds 5 to 10 knots veering to the north in the late morning and afternoon. Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TONIGHT...Northeast winds 5 to 10 knots becoming southeast 10 to 15 knots in the late evening and overnight. Mostly cloudy with a slight chance of showers and thunderstorms early in the evening, then partly cloudy in the late evening and overnight. Waves 2 feet or less. .MONDAY...South winds 15 to 20 knots. Partly cloudy early in the morning then clearing. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. .MONDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots after midnight. Mostly clear early in the evening becoming mostly cloudy. A chance of thunderstorms until early morning. Light showers likely in the late evening and overnight. 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. $$ LEZ444-171515- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 309 AM EDT Sun May 17 2026 .TODAY...Southwest winds 5 to 10 knots backing to the southeast in the afternoon. Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Waves 2 feet or less. .TONIGHT...Southeast winds 5 to 10 knots becoming south 10 to 15 knots in the late evening and overnight. Mostly clear. Waves 2 feet or less. .MONDAY...South winds 10 to 15 knots becoming southwest 15 to 20 knots in the late morning and afternoon. Mostly sunny. A chance of showers early in the afternoon. Waves 1 to 3 feet. .MONDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and overnight. Partly cloudy with a chance of showers. Waves 1 to 3 feet. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is missing. $$ MR You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes