FZUS53 KDTX 040720 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 320 AM EDT Mon May 4 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. LHZ422-041530- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 320 AM EDT Mon May 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest winds 10 to 15 knots increasing to 20 to 25 knots with gusts to 30 knots. Mostly sunny. Waves 1 to 3 feet building to 3 to 5 feet in the afternoon. Waves occasionally around 7 feet. .TONIGHT...Southwest winds 20 to 25 knots with gusts to 30 knots diminishing to 15 to 20 knots in the late evening and early morning, then becoming north 10 to 15 knots after midnight. Partly cloudy until early morning becoming mostly cloudy. A slight chance of showers early in the evening, then a chance of showers and a slight chance of thunderstorms in the late evening and early morning. A slight chance of showers after midnight. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally around 7 feet. .TUESDAY...North winds 10 to 15 knots backing to the west in the late morning and afternoon. Mostly cloudy until late afternoon becoming partly cloudy. Waves 2 feet or less. .TUESDAY NIGHT...Northwest winds 10 to 15 knots veering to the northeast in the late evening and early morning, then diminishing to 5 to 10 knots after midnight. Partly cloudy becoming mostly cloudy in the late evening and early morning becoming partly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-041530- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 320 AM EDT Mon May 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest winds 10 to 15 knots increasing to 20 to 25 knots with gusts to 30 knots. Mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. .TONIGHT...Southwest winds 20 to 25 knots with gusts to 30 knots becoming west 15 to 20 knots in the late evening and early morning, then becoming northeast 10 to 15 knots after midnight. Partly cloudy until early morning becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally around 7 feet. .TUESDAY...Northwest winds 5 to 10 knots becoming southwest 10 to 15 knots in the late morning and afternoon. Mostly cloudy until late afternoon becoming partly cloudy. Waves 2 feet or less. .TUESDAY NIGHT...Northeast winds 10 to 15 knots. Mostly cloudy early in the evening becoming partly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-041530- Port Austin to Harbor Beach MI- 320 AM EDT Mon May 4 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots in the late evening and early morning, then veering to the north after midnight. Partly cloudy until early morning becoming mostly cloudy. A slight chance of showers early in the evening, then a slight chance of thunderstorms in the late evening and early morning. A chance of showers in the late evening and overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .TUESDAY...North winds 5 to 10 knots backing to the south early in the afternoon. Mostly cloudy until late afternoon becoming partly cloudy. Waves 2 feet or less. .TUESDAY NIGHT...East winds 10 to 15 knots becoming northeast 5 to 10 knots in the late evening and overnight. Mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-041530- Harbor Beach to Port Sanilac MI- 320 AM EDT Mon May 4 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...Southwest winds 15 to 20 knots becoming northwest 10 to 15 knots after midnight. Partly cloudy until early morning becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms in the late evening and early morning. A chance of showers after midnight. Waves 1 to 3 feet. .TUESDAY...Northwest winds 5 to 10 knots backing to the southwest early in the afternoon. Mostly cloudy. A chance of showers early in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...South winds 5 to 10 knots backing to the northeast in the late evening and overnight. Mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-041530- Port Sanilac to Port Huron MI- 320 AM EDT Mon May 4 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots in the afternoon. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...Southwest winds 15 to 20 knots veering to the west after midnight. Mostly clear until early morning becoming mostly cloudy. A chance of showers and a slight chance of thunderstorms in the late evening and early morning. A slight chance of showers and thunderstorms after midnight. Waves 1 to 3 feet. .TUESDAY...North winds 10 to 15 knots becoming northwest 5 to 10 knots in the late morning and early afternoon, then backing to the west early in the afternoon. Mostly cloudy. A chance of showers early in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...Southwest winds 5 to 10 knots veering to the north in the late evening and early morning, then increasing to 10 to 15 knots after midnight. Mostly cloudy. A chance of showers until early morning. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-041530- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 320 AM EDT Mon May 4 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots late in the afternoon. Sunny. A slight chance of showers and thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .TONIGHT...Southwest winds 15 to 20 knots. Partly cloudy until early morning becoming mostly cloudy. A chance of showers and thunderstorms until early morning, then a chance of showers after midnight. Waves 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots becoming northwest 5 to 10 knots in the late morning and afternoon. Mostly cloudy. A chance of showers until late afternoon, then showers likely early in the afternoon. Waves 2 feet or less. .TUESDAY NIGHT...Northwest winds 5 to 10 knots. Cloudy. Rain showers likely until early morning, then a chance of showers after midnight. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 51 degrees. $$ SC You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes