National Weather Service Marine Forecast FZUS53 KDTX

FZUS53 KDTX 310143
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
943 PM EDT Thu Jul 30 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.

LHZ422-310945
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI
943 PM EDT Thu Jul 30 2026

REST OF TONIGHT
Southeast winds 5 to 10 knots veering to the southwest after midnight. Partly cloudy. Waves 2 feet or less.

FRIDAY
Southwest winds 5 to 10 knots. Partly cloudy until late afternoon becoming mostly cloudy. Waves 2 feet or less.

FRIDAY NIGHT
North winds 5 to 10 knots veering to the northeast after midnight. Cloudy. A slight chance of showers until early morning. A slight chance of thunderstorms. A chance of showers after midnight. Waves 2 feet or less.

SATURDAY
Northeast winds 5 to 10 knots increasing to 10 to 15 knots in the late morning and afternoon. Showers likely until late afternoon, then showers early in the afternoon. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

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LHZ421-310945
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay
943 PM EDT Thu Jul 30 2026

REST OF TONIGHT
Southeast winds 5 to 10 knots veering to the south after midnight. Mostly clear. Waves 2 feet or less.

FRIDAY
Southwest winds 5 to 10 knots increasing to 10 to 15 knots early in the afternoon. Partly cloudy until late afternoon, then mostly cloudy with a slight chance of showers and thunderstorms early in the afternoon. Waves 2 feet or less.

FRIDAY NIGHT
Northeast winds 5 to 10 knots. Cloudy. A chance of showers in the evening. A slight chance of thunderstorms. Light showers likely after midnight. Waves 2 feet or less.

SATURDAY
Northeast winds 5 to 10 knots increasing to 10 to 15 knots early in the afternoon. Mostly cloudy. Light showers likely. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

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LHZ441-310945
Port Austin to Harbor Beach MI
943 PM EDT Thu Jul 30 2026

REST OF TONIGHT
South winds 5 to 10 knots veering to the southwest early in the morning. Mostly clear. Waves 2 feet or less.

FRIDAY
Southwest winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less.

FRIDAY NIGHT
Northeast winds 5 to 10 knots. Cloudy. A chance of showers in the evening. A slight chance of thunderstorms. Light showers likely after midnight. Waves 2 feet or less.

SATURDAY
Northeast winds 5 to 10 knots. Cloudy. Light showers likely. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

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LHZ442-310945
Harbor Beach to Port Sanilac MI
943 PM EDT Thu Jul 30 2026

REST OF TONIGHT
Light and variable winds becoming southwest 5 to 10 knots early in the morning. Mostly clear. Waves 2 feet or less.

FRIDAY
Light and variable winds becoming south 5 to 10 knots in the late morning and afternoon. Partly cloudy until late afternoon becoming mostly cloudy. Waves 2 feet or less.

FRIDAY NIGHT
Southeast winds 5 to 10 knots backing to the north in the late evening and overnight. Cloudy. A chance of showers after midnight. Waves 2 feet or less.

SATURDAY
Northeast winds 5 to 10 knots. Cloudy. A chance of showers early in the morning, then showers likely in the late morning and afternoon. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

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LHZ443-310945
Port Sanilac to Port Huron MI
943 PM EDT Thu Jul 30 2026

REST OF TONIGHT
Light and variable winds becoming southwest 5 to 10 knots early in the morning. Mostly clear. Waves 2 feet or less.

FRIDAY
Light and variable winds becoming southeast 5 to 10 knots in the late morning and afternoon. Mostly sunny early in the morning becoming partly cloudy. Waves 2 feet or less.

FRIDAY NIGHT
Light and variable winds becoming southwest 5 to 10 knots in the late evening and early morning, then veering to the north after midnight. Cloudy. A chance of showers after midnight. Waves 2 feet or less.

SATURDAY
Northeast winds 5 to 10 knots. Cloudy. A chance of showers early in the morning, then showers likely in the late morning and afternoon. Waves 2 feet or less.

See Lake Huron Open Lake Forecast for days 3 through 5.

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LEZ444-310945
Michigan Waters of Lake Erie from Detroit River to North Cape MI
943 PM EDT Thu Jul 30 2026

REST OF TONIGHT
South winds 5 to 10 knots veering to the west after midnight. Mostly clear. Waves 2 feet or less.

FRIDAY
Northwest winds 5 to 10 knots backing to the southeast early in the afternoon. Mostly sunny until late afternoon becoming partly cloudy. Waves 2 feet or less.

FRIDAY NIGHT
South winds 5 to 10 knots. Cloudy. Waves 2 feet or less.

SATURDAY
Southeast winds 5 to 10 knots becoming east 10 to 15 knots early in the afternoon. Cloudy. A chance of showers until late afternoon, then showers likely and a chance of thunderstorms early in the afternoon. Waves 2 feet or less.

See Lake Erie Open Lake Forecast for days 3 through 5.

The water temperature at Belle Isle is 76 degrees.

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AA

You can obtain your latest National Weather Service forecasts online a www.weather.gov/greatlakes