426
FZUS53 KDTX 210152
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
952 PM EDT Wed Aug 20 2025

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.

LHZ422-211000-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
952 PM EDT Wed Aug 20 2025

.REST OF TONIGHT...Northeast winds 15 to 20 knots diminishing to
10 to 15 knots after midnight. Partly cloudy. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots. Partly cloudy until
late afternoon then clearing. Waves 2 feet or less.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots becoming light
and variable. Clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming southwest 5 to
10 knots in the late morning and afternoon. Mostly sunny. Waves
2 feet or less.

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

$$

LHZ421-211000-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
952 PM EDT Wed Aug 20 2025

.REST OF TONIGHT...Northeast winds 10 to 15 knots. Partly cloudy.
Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
.THURSDAY...Northeast winds 10 to 15 knots. Partly cloudy until
late afternoon then clearing. Waves 2 feet or less.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots becoming light
and variable. Clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds becoming southwest 5 to
10 knots in the late morning and afternoon. Mostly sunny. Waves
2 feet or less.

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

$$

LHZ441-211000-
Port Austin to Harbor Beach MI-
952 PM EDT Wed Aug 20 2025

.REST OF TONIGHT...Northeast winds 10 to 15 knots diminishing to
5 to 10 knots early in the morning. Partly cloudy. Waves 2 to
4 feet subsiding to 1 to 3 feet after midnight.
.THURSDAY...Northeast winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. Partly cloudy until late
afternoon then clearing. Waves 2 feet or less.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and early morning, then
becoming light and variable after midnight. Mostly clear. Waves
2 feet or less.
.FRIDAY...Light and variable winds. Mostly sunny. Waves 2 feet or
less.

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

$$

LHZ442-211000-
Harbor Beach to Port Sanilac MI-
952 PM EDT Wed Aug 20 2025

.REST OF TONIGHT...Northeast winds 15 to 20 knots diminishing to
10 to 15 knots after midnight. Mostly cloudy. Waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly cloudy
becoming partly cloudy in the late morning and early afternoon
becoming sunny. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots becoming
southeast 5 to 10 knots after midnight. Mostly clear. Waves 1 to
3 feet.
.FRIDAY...Light and variable winds. Mostly sunny. Waves 2 feet or
less.

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

$$

LHZ443-211000-
Port Sanilac to Port Huron MI-
952 PM EDT Wed Aug 20 2025

.REST OF TONIGHT...Northeast winds 15 to 20 knots diminishing to
10 to 15 knots after midnight. Mostly cloudy. Waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly cloudy
becoming partly cloudy in the late morning and early afternoon
becoming sunny. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots becoming
southeast 5 to 10 knots after midnight. Mostly clear. Waves 1 to
3 feet.
.FRIDAY...Light and variable winds. Sunny. Waves 2 feet or less.

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

$$

LEZ444-211000-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
952 PM EDT Wed Aug 20 2025

.REST OF TONIGHT...Northeast winds 15 to 20 knots diminishing to
10 to 15 knots early in the morning. Cloudy. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly cloudy
becoming partly cloudy in the late morning and early afternoon
becoming mostly sunny. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northeast winds 10 to 15 knots diminishing to
5 to 10 knots after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...Northeast winds 5 to 10 knots veering to the east early
in the afternoon. Sunny. Waves 2 feet or less.

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

The water temperature at Belle Isle is 75 degrees.

$$

SC

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