FZUS53 KDTX 220803 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 403 AM EDT Sat Aug 22 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. LHZ422-221615- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 403 AM EDT Sat Aug 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE SUNDAY NIGHT... .TODAY...Southwest winds 5 to 10 knots veering to the west early in the afternoon, then becoming northwest 10 to 15 knots late in the afternoon. Partly cloudy. A chance of showers and thunderstorms in the morning, then showers likely and a chance of thunderstorms in the afternoon. A slight chance of waterspouts in the morning. A chance of waterspouts in the afternoon. Waves 2 feet or less. .TONIGHT...Northwest winds 15 to 20 knots increasing to 20 to 25 knots in the late evening and overnight. Light showers and a chance of thunderstorms early in the evening, then partly cloudy in the late evening and overnight. Waves 2 to 4 feet. .SUNDAY...Northwest winds 20 to 25 knots. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers early in the afternoon. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds to 30 knots diminishing to 20 to 25 knots with gusts to 30 knots in the late evening and overnight. Partly cloudy. A chance of showers early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-221615- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 403 AM EDT Sat Aug 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...Southwest winds 10 to 15 knots becoming west 5 to 10 knots in the late morning and early afternoon, then becoming northwest 10 to 15 knots late in the afternoon. A chance of showers and a slight chance of thunderstorms in the morning, then showers and a chance of thunderstorms in the afternoon. A chance of waterspouts. Waves 2 feet or less. .TONIGHT...North winds 15 to 20 knots becoming northwest 20 to 25 knots in the late evening and overnight. Light showers and a chance of thunderstorms early in the evening. Waves 1 to 3 feet building to 4 to 6 feet in the late evening and overnight. Waves occasionally around 8 feet. .SUNDAY...Northwest winds 20 to 25 knots. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers early in the afternoon. Waves 4 to 6 feet. Waves occasionally around 7 feet. .SUNDAY NIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots until early morning. Mostly cloudy early in the evening becoming partly cloudy. A chance of showers early in the evening. Waves 4 to 6 feet. Waves occasionally around 7 feet. Small Craft Advisory conditions are expected to continue beyond the forecast period. Please refer to the Open Lakes Forecast for more information. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-221615- Port Austin to Harbor Beach MI- 403 AM EDT Sat Aug 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...Southwest winds 5 to 10 knots veering to the northwest late in the afternoon. Mostly cloudy with a chance of showers and a slight chance of thunderstorms in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. A chance of waterspouts. Waves 2 feet or less. .TONIGHT...North winds 15 to 20 knots becoming northwest 20 to 25 knots in the late evening and overnight. A chance of waterspouts early in the evening. Light showers and a chance of thunderstorms early in theevening, then a slight chance of showers and thunderstorms in the late evening and early morning. Waves 1 to 3 feet building to 5 to 7 feet in the late evening and overnight. Waves occasionally around 10 feet. .SUNDAY...Northwest winds 20 to 25 knots with gusts to 30 knots. Mostly cloudy. Light showers likely early in the afternoon. Waves 6 to 9 feet. Waves occasionally around 12 feet. .SUNDAY NIGHT...Northwest winds 20 to 25 knots. Gusts to 30 knots until early morning. Mostly cloudy early in the evening becoming partly cloudy. A chance of showers until early morning. Waves 6 to 9 feet. Waves occasionally around 12 feet. Small Craft Advisory conditions are expected to continue beyond the forecast period. Please refer to the Open Lakes Forecast for more information. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-221615- Harbor Beach to Port Sanilac MI- 403 AM EDT Sat Aug 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING... .TODAY...South winds 5 to 10 knots backing to the northeast late in the afternoon. A chance of showers and thunderstorms in the morning, then showers and a chance of thunderstorms in the afternoon. A chance of waterspouts. Waves 2 feet or less. .TONIGHT...North winds 10 to 15 knots becoming northwest 15 to 20 knots in the late evening and overnight. Showers and a chance of thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and early morning. A chance of waterspouts early in the evening. A slight chance of waterspouts in the late evening and early morning. Waves 1 to 3 feet building to 3 to 5 feet in the late evening and overnight. Waves occasionally around 7 feet. .SUNDAY...Northwest winds 15 to 20 knots increasing to 20 to 25 knots with gusts to 30 knots in the late morning and early afternoon, then diminishing to 15 to 20 knots with gusts to 30 knots early in the afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of showers early in the morning. A chance of showers and thunderstorms early in the afternoon. Waves 4 to 6 feet. Waves occasionally around 7 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots. Mostly cloudy early in the evening becoming partly cloudy. Light showers likely and a chance of thunderstorms early in the evening, then a chance of showers in the late evening and early morning. Waves 4 to 6 feet. Waves occasionally around 7 feet. Small Craft Advisory conditions are expected to continue beyond the forecast period. Please refer to the Open Lakes Forecast for more information. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-221615- Port Sanilac to Port Huron MI- 403 AM EDT Sat Aug 22 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH MONDAY MORNING... .TODAY...South winds 5 to 10 knots. Partly cloudy with a chance of showers and thunderstorms in the morning, then showers with thunderstorms likely in the afternoon. A slight chance of waterspouts. Waves 2 feet or less. .TONIGHT...Northwest winds 10 to 15 knots increasing to 15 to 20 knots in the late evening and overnight. Gusts to 25 knots. Mostly cloudy. A slight chance of waterspouts early in the evening. Rain showers likely and a chance of thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and early morning. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .SUNDAY...Northwest winds 15 to 20 knots. Gusts around 25 knots. Mostly cloudy until late afternoon becoming partly cloudy. Light showers likely and a chance of thunderstorms early in the afternoon. Waves 2 to 4 feet. .SUNDAY NIGHT...Northwest winds 15 to 20 knots. Gusts to 25 knots. Partly cloudy. A chance of showers and thunderstorms early in the evening. Waves 2 to 4 feet.Small Craft Advisory conditions are expected to continue beyond the forecast period. Please refer to the Open Lakes Forecast for more information. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-221615- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 403 AM EDT Sat Aug 22 2026 .TODAY...Southwest winds 5 to 10 knots becoming west 10 to 15 knots late in the afternoon. A slight chance of waterspouts. Showers with thunderstorms likely in the afternoon. Waves 2 feet or less. .TONIGHT...Northwest winds 10 to 15 knots. Partly cloudy. A chance of showers and thunderstorms early in the evening. A slight chance of waterspouts early in the evening. Waves 2 feet or less. .SUNDAY...Northwest winds 15 to 20 knots. Mostly sunny early in the morning becoming partly cloudy. Waves 1 to 3 feet. .SUNDAY NIGHT...Northwest winds 10 to 15 knots. Mostly clear. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 74 degrees. $$ BT You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes