FZUS53 KDTX 181346 NSHDTX Nearshore Marine Forecast for Michigan National Weather Service Detroit/Pontiac MI 946 AM EDT Wed Mar 18 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. LHZ422-182200- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI- 946 AM EDT Wed Mar 18 2026 .REST OF TODAY...South winds 15 to 20 knots increasing to 20 to 25 knots early in the afternoon, then diminishing to 15 to 20 knots late in the afternoon. Mostly cloudy. Scattered flurries in the afternoon. Waves 2 to 4 feet. .TONIGHT...South winds 15 to 20 knots becoming southwest 10 to 15 knots after midnight. Mostly cloudy. Scattered flurries early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .THURSDAY...West winds 5 to 10 knots. Mostly cloudy with a slight chance of light snow showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 2 feet or less. .THURSDAY NIGHT...Northwest winds 5 to 10 knots backing to the southwest in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ421-182200- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay- 946 AM EDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...South winds 15 to 20 knots increasing to 20 to 25 knots early in the afternoon, then diminishing to 15 to 20 knots late in the afternoon. Mostly cloudy. Scattered flurries in the afternoon. Waves 2 to 4 feet. .TONIGHT...South winds 15 to 20 knots becoming southwest 10 to 15 knots after midnight. Mostly cloudy. Scattered flurries early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...West winds 5 to 10 knots. Mostly cloudy with a slight chance of light freezing rain and snow showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 2 feet or less. .THURSDAY NIGHT...West winds 5 to 10 knots backing to the southwest in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ441-182200- Port Austin to Harbor Beach MI- 946 AM EDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...South winds 15 to 20 knots. Mostly cloudy. Scattered flurries in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...South winds 15 to 20 knots becoming southwest 10 to 15 knots in the late evening and overnight. Mostly cloudy. Scattered flurries early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...West winds 5 to 10 knots. Mostly cloudy with a slight chance of light snow showers until late afternoon, then partly cloudy early in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...Northwest winds 5 to 10 knots backing to the southwest in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ442-182200- Harbor Beach to Port Sanilac MI- 946 AM EDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...South winds 15 to 20 knots. Partly cloudy late in the morning becoming mostly cloudy. Scattered flurries in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet in the afternoon. Waves occasionally around 7 feet. .TONIGHT...South winds 15 to 20 knots becoming southwest 10 to 15 knots after midnight. Mostly cloudy. Scattered flurries early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...West winds 5 to 10 knots. Mostly cloudy with a slight chance of light snow showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 2 feet or less. .THURSDAY NIGHT...North winds 5 to 10 knots backing to the southwest in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LHZ443-182200- Port Sanilac to Port Huron MI- 946 AM EDT Wed Mar 18 2026 .REST OF TODAY...South winds 15 to 20 knots. Partly cloudy late in the morning becoming mostly cloudy. Scattered flurries in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...South winds 15 to 20 knots becoming southwest 10 to 15 knots after midnight. Mostly cloudy. Scattered flurries early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .THURSDAY...West winds 5 to 10 knots. Mostly cloudy with a slight chance of light snow showers early in the morning, then partly cloudy in the late morning and afternoon. Waves 2 feet or less. .THURSDAY NIGHT...North winds 5 to 10 knots backing to the south in the late evening and overnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less. See Lake Huron Open Lake Forecast for days 3 through 5. $$ LEZ444-182200- Michigan Waters of Lake Erie from Detroit River to North Cape MI- 946 AM EDT Wed Mar 18 2026 .REST OF TODAY...South winds 10 to 15 knots. Mostly cloudy. Scattered flurries in the afternoon. Waves 1 to 3 feet. .TONIGHT...South winds 10 to 15 knots. Mostly cloudy becoming partly cloudy in the late evening and early morning becoming mostly cloudy. Scattered flurries early in the evening. Waves 1 to 3 feet. .THURSDAY...Southwest winds 5 to 10 knots. Mostly cloudy until late afternoon becoming partly cloudy. A chance of showers until late afternoon. Waves 2 feet or less. .THURSDAY NIGHT...Light and variable winds becoming east 5 to 10 knots in the late evening and early morning, then veering to the south after midnight. Partly cloudy until early morning becoming mostly cloudy. Waves 2 feet or less. See Lake Erie Open Lake Forecast for days 3 through 5. The water temperature at Belle Isle is 35 degrees. $$ MV You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes