FZUS53 KDTX 171946 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 346 PM EDT Fri Apr 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. LHZ422-180400- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 346 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY EVENING... .TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots in the late evening and overnight. Mostly clear in the evening, then showers and a chance of thunderstorms after midnight. Waves 1 to 3 feet building to 3 to 5 feet after midnight. .SATURDAY...South winds 15 to 20 knots veering to the west in the late morning and afternoon. Becoming partly cloudy early in the afternoon. Rain showers and a chance of thunderstorms early in the morning, then showers likely in the late morning and early afternoon. A slight chance of showers early in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon. .SATURDAY NIGHT...West winds 15 to 20 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...West winds 15 to 20 knots. Mostly sunny early in the morning becoming partly cloudy. A chance of light rain and snow showers early in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-180400- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 346 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY EVENING... .TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots in the late evening and overnight. Partly cloudy in the evening, then mostly cloudy with showers likely and a chance of thunderstorms after midnight. Waves 1 to 3 feet building to 3 to 5 feet in the late evening and overnight. .SATURDAY...South winds 15 to 20 knots veering to the west in the late morning and afternoon. Becoming partly cloudy early in the afternoon. Rain showers and a chance of thunderstorms early in the morning, then showers likely in the late morning and early afternoon. A slight chance of showers early in the afternoon. Waves 3 to 5 feet. .SATURDAY NIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...West winds 15 to 20 knots. Mostly sunny early in the morning becoming partly cloudy. A chance of light rain and snow showers early in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-180400- Port Austin to Harbor Beach MI- 346 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... .TONIGHT...Southeast winds 10 to 15 knots becoming south 20 to 25 knots. Partly cloudy in the evening, then mostly cloudy with showers likely and a chance of thunderstorms after midnight. Waves 1 to 3 feet building to 4 to 6 feet. Waves occasionally around 8 feet. .SATURDAY...South winds 20 to 25 knots becoming west 15 to 20 knots in the late morning and afternoon. Mostly cloudy. A chance of thunderstorms in the morning. Rain showers likely. A slight chance of thunderstorms in the afternoon. Waves 4 to 6 feet subsiding to 2 to 4 feet early in the afternoon. Waves occasionally around 8 feet. .SATURDAY NIGHT...Northwest winds 10 to 15 knots. Partly cloudy. Waves 2 to 4 feet. .SUNDAY...Northwest winds 15 to 20 knots. Mostly sunny early in the morning becoming partly cloudy. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-180400- Harbor Beach to Port Sanilac MI- 346 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... .TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots in the late evening and overnight. Partly cloudy. Rain showers likely and a chance of thunderstorms after midnight. Waves 1 to 3 feet building to 3 to 5 feet after midnight. Waves occasionally around 7 feet. .SATURDAY...South winds 15 to 20 knots veering to the west early in the afternoon. Mostly cloudy. Rain showers likely and a chance of thunderstorms early in the morning, then a slight chance of thunderstorms in the late morning and early afternoon. A chance of showers in the late morning and afternoon. Waves 4 to 6 feet subsiding to 2 to 4 feet early in the afternoon. Waves occasionally around 8 feet. .SATURDAY NIGHT...West winds 10 to 15 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...Northwest winds 10 to 15 knots. Mostly sunny early in the morning becoming partly cloudy. A chance of light snow showers early in the afternoon. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-180400- Port Sanilac to Port Huron MI- 346 PM EDT Fri Apr 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH SATURDAY AFTERNOON... .TONIGHT...Southeast winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and overnight. Partly cloudy. A chance of showers and thunderstorms after midnight. Waves 1 to 3 feet building to 3 to 5 feet after midnight. Waves occasionally around 7 feet. .SATURDAY...South winds 15 to 20 knots veering to the west early in the afternoon. Rain showers and a chance of thunderstorms early in the morning, then showers likely and a slight chance of thunderstorms in the late morning and early afternoon. A chance of showers early in the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the afternoon. Waves occasionally around 7 feet. .SATURDAY NIGHT...West winds 10 to 15 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...Northwest winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Mostly sunny until late afternoon, then partly cloudy with a chance of light rain and snow showers early in the afternoon. Waves 1 to 3 feet. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-180400- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 346 PM EDT Fri Apr 17 2026 .TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to 20 knots early in the morning. Partly cloudy. Light showers likely and a chance of thunderstorms after midnight. Waves 1 to 3 feet. .SATURDAY...Southwest winds 15 to 20 knots veering to the west early in the afternoon. Light showers and a chance of thunderstorms early in the morning, then showers likely and a slight chance of thunderstorms in the late morning and early afternoon. A chance of showers early in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .SATURDAY NIGHT...West winds 15 to 20 knots becoming northwest 10 to 15 knots in the late evening and overnight. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots in the late morning and afternoon. Mostly sunny until late afternoon, then partly cloudy with a chance of showers early in the afternoon. Waves 1 to 3 feet. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 52 degrees. $$ KDK You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes