762
FZUS53 KDTX 311941
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
341 PM EDT Thu Jul 31 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.

LHZ422-010345-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
341 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.TONIGHT...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Clear. Waves 2 to 4 feet subsiding to
1 to 3 feet after midnight.
.FRIDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves
1 to 3 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots becoming southeast 5 to
10 knots in the late evening and early morning, then veering to
the southwest after midnight. Clear. Waves 2 feet or less.
.SATURDAY...Southwest winds 5 to 10 knots. Sunny. Waves 2 feet or
less.

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

$$

LHZ421-010345-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
341 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Clear. Waves 3 to 5 feet subsiding to
2 to 4 feet early in the morning. Waves occasionally around
7 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy early in
the morning then clearing. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots becoming southeast
5 to 10 knots in the late evening and early morning, then veering
to the west after midnight. Clear. Waves 2 feet or less.
.SATURDAY...Southwest winds 5 to 10 knots. Sunny. Waves 2 feet or
less.

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

$$

LHZ441-010345-
Port Austin to Harbor Beach MI-
341 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Clear. Waves 3 to 5 feet. Waves
occasionally around 7 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy early in
the morning then clearing. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon.
.FRIDAY NIGHT...North winds 5 to 10 knots backing to the west
after midnight. Clear. Waves 2 feet or less.
.SATURDAY...West winds 5 to 10 knots until late afternoon
becoming light and variable. Sunny. Waves 2 feet or less.

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

$$

LHZ442-010345-
Harbor Beach to Port Sanilac MI-
341 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...North winds 20 to 25 knots becoming northeast 10 to
15 knots. Clear. Waves 4 to 6 feet. Waves occasionally around
8 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy early in
the morning then clearing. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon.
.FRIDAY NIGHT...North winds 10 to 15 knots diminishing to 5 to
10 knots in the late evening and overnight. Clear. Waves 1 to
3 feet.
.SATURDAY...West winds 5 to 10 knots until late afternoon
becoming light and variable. Sunny. Waves 2 feet or less.

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

$$

LHZ443-010345-
Port Sanilac to Port Huron MI-
341 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...North winds 20 to 25 knots becoming northeast 10 to
15 knots. Mostly clear. Waves 4 to 6 feet. Waves occasionally
around 8 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Partly cloudy early in
the morning then clearing. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots diminishing to
5 to 10 knots after midnight. Clear. Waves 2 to 4 feet subsiding
to 1 to 3 feet in the late evening and overnight.
.SATURDAY...Light and variable winds becoming northeast 5 to
10 knots early in the afternoon. Sunny. Waves 2 feet or less.

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

$$

LEZ444-010345-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
341 PM EDT Thu Jul 31 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TONIGHT...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots early in the morning. Mostly clear. Haze in the evening.
Waves 1 to 3 feet.
.FRIDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves
1 to 3 feet.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots diminishing to
5 to 10 knots after midnight. Clear. Waves 2 feet or less.
.SATURDAY...Northeast winds 5 to 10 knots. Mostly sunny. Waves
2 feet or less.

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

The water temperature at Belle Isle is 77 degrees.

$$

DRK

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