FZUS53 KDTX 120843 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 443 AM EDT Tue May 12 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. LHZ422-121645- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 443 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 10 to 15 knots becoming south 20 to 25 knots with gusts to 30 knots. Partly cloudy in the morning, then mostly cloudy with a chance of showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...South winds 20 to 25 knots with gusts to 30 knots becoming southwest 15 to 20 knots after midnight. Becoming partly cloudy after midnight. A chance of thunderstorms in the evening. Rain showers. A slight chance of thunderstorms after midnight. Waves 2 to 4 feet. .WEDNESDAY...Northwest winds 20 to 25 knots. Gusts to 30 knots in the late morning and afternoon. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots until early morning. Cloudy with a chance of showers early in the evening, then partly cloudy in the late evening and overnight. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-121645- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 443 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 10 to 15 knots becoming south 15 to 20 knots in the afternoon. Partly cloudy in the morning, then mostly cloudy with a chance of showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...South winds 20 to 25 knots becoming southwest 15 to 20 knots after midnight. Rain showers and a slight chance of thunderstorms until early morning, then a slight chance of showers after midnight. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY...West winds 20 to 25 knots. Mostly cloudy. A chance of showers early in the afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...Northwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots after midnight. Mostly cloudy until early morning becoming partly cloudy. A chance of showers early in the evening. Waves 5 to 7 feet. Waves occasionally around 10 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-121645- Port Austin to Harbor Beach MI- 443 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 5 to 10 knots increasing to 15 to 20 knots. Mostly sunny in the morning, then mostly cloudy with showers likely in the afternoon. Waves 2 feet or less. .TONIGHT...Southeast winds 15 to 20 knots becoming south 20 to 25 knots with gusts to 30 knots in the late evening and early morning, then becoming southwest 15 to 20 knots after midnight. A chance of showers and thunderstorms early in the evening, then showers and a slight chance of thunderstorms in the late evening and early morning. A chance of showers after midnight. Waves 4 to 6 feet. Waves occasionally around 8 feet. .WEDNESDAY...West winds 15 to 20 knots becoming northwest 20 to 25 knots early in the afternoon. Mostly cloudy. A chance of showers early in the afternoon. Waves 2 to 4 feet building to 4 to 6 feet early in the afternoon. Waves occasionally around 8 feet. .WEDNESDAY NIGHT...Northwest winds 20 to 25 knots becoming north 15 to 20 knots after midnight. Gusts to 30 knots. Mostly cloudy. Light showers likely early in the evening. Waves 5 to 7 feet. Waves occasionally around 10 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-121645- Harbor Beach to Port Sanilac MI- 443 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and afternoon. Mostly sunny in the morning, then mostly cloudy with a chance of showers in the afternoon. Waves 2 feet or less. .TONIGHT...Southeast winds 15 to 20 knots becoming south 20 to 25 knots with gusts to 30 knots in the late evening and early morning, then becoming southwest 15 to 20 knots after midnight. Rain showers and a chance of thunderstorms. Waves 4 to 6 feet. Waves occasionally around 8 feet. .WEDNESDAY...West winds 15 to 20 knots. Mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet early in the afternoon. .WEDNESDAY NIGHT...Northwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy. A chance of showers until early morning. Waves 4 to 6 feet. Waves occasionally around 7 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-121645- Port Sanilac to Port Huron MI- 443 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM EDT THIS AFTERNOON THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 5 to 10 knots becoming south 10 to 15 knots late in the afternoon. Mostly sunny in the morning, then mostly cloudy with a chance of showers in the afternoon. Waves 2 feet or less. .TONIGHT...Southeast winds 15 to 20 knots becoming south 20 to 25 knots in the late evening and early morning, then becoming southwest 15 to 20 knots after midnight. Rain showers and a chance of thunderstorms. Waves 3 to 5 feet. Waves occasionally around 7 feet. .WEDNESDAY...West winds 15 to 20 knots. Partly cloudy early in the morning becoming mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 20 to 25 knots. Mostly cloudy. Waves 4 to 6 feet. Waves occasionally around 8 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-121645- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 443 AM EDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... .TODAY...Southeast winds 5 to 10 knots increasing to 10 to 15 knots in the afternoon. Sunny in the morning becoming mostly cloudy. Waves 2 feet or less. .TONIGHT...South winds 15 to 20 knots becoming southwest 20 to 25 knots after midnight. Rain showers and a slight chance of thunderstorms. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. .WEDNESDAY...West winds 15 to 25 knots. Mostly sunny becoming partly cloudy in the late morning and early afternoon becoming mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 15 to 25 knots diminishing to 10 to 15 knots after midnight. Mostly cloudy until early morning becoming partly cloudy. Waves 1 to 3 feet. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is missing. $$ BT You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes