854
FZUS53 KDTX 281939
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
339 PM EDT Thu Aug 28 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.

LHZ422-290345-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
339 PM EDT Thu Aug 28 2025

.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots early in the morning. Mostly clear. Waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight.
.FRIDAY...North winds 10 to 15 knots becoming northeast 5 to
10 knots early in the afternoon. Partly cloudy. Waves 2 feet or
less.
.FRIDAY NIGHT...East winds 5 to 10 knots veering to the southwest
after midnight. Clear. Waves 2 feet or less.
.SATURDAY...West winds 5 to 10 knots backing to the south early
in the afternoon. Sunny. Waves 2 feet or less.

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

$$

LHZ421-290345-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
339 PM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots early in the morning. Partly cloudy. A slight chance of
showers after midnight. Waves 5 to 7 feet. Waves occasionally
around 10 feet.
.FRIDAY...North winds 10 to 15 knots. Partly cloudy. A slight
chance of showers early in the morning, then a chance of showers
in the late morning and early afternoon. A slight chance of
waterspouts until late afternoon. Waves 2 to 4 feet.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots backing to the west
after midnight. Clear. Waves 1 to 3 feet.
.SATURDAY...West winds 5 to 10 knots backing to the south early
in the afternoon. Mostly sunny. Waves 2 feet or less.

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

$$

LHZ441-290345-
Port Austin to Harbor Beach MI-
339 PM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots early in the morning. Partly cloudy. A slight chance of
showers after midnight. Waves 5 to 7 feet. Waves occasionally
around 10 feet.
.FRIDAY...North winds 10 to 15 knots. Mostly cloudy until late
afternoon becoming partly cloudy. A slight chance of waterspouts
until late afternoon. A slight chance of showers early in the
morning. A chance of showers in the late morning and early
afternoon, then a slight chance of showers early in the
afternoon. Waves 3 to 5 feet. Waves occasionally around 7 feet.
.FRIDAY NIGHT...North winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. Mostly clear.
Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight.
.SATURDAY...Northwest winds 5 to 10 knots. Mostly sunny. Waves
2 feet or less.

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

$$

LHZ442-290345-
Harbor Beach to Port Sanilac MI-
339 PM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Partly cloudy. A slight chance of
showers after midnight. A slight chance of waterspouts after
midnight. Waves 4 to 6 feet. Waves occasionally around 7 feet.
.FRIDAY...North winds 10 to 15 knots. Partly cloudy becoming
mostly cloudy in the late morning and early afternoon becoming
partly cloudy. A slight chance of waterspouts until late
afternoon. A slight chance of showers early in the morning. A
chance of showers in the late morning and early afternoon, then a
slight chance of showers early in the afternoon. Waves 3 to
5 feet. Waves occasionally around 7 feet.
.FRIDAY NIGHT...North winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. Mostly clear.
Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight.
.SATURDAY...Northwest winds 5 to 10 knots veering to the north
early in the afternoon. Mostly sunny. Waves 2 feet or less.

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

$$

LHZ443-290345-
Port Sanilac to Port Huron MI-
339 PM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Partly cloudy with a slight chance of
showers. A slight chance of waterspouts. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.FRIDAY...North winds 10 to 15 knots. Partly cloudy becoming
mostly cloudy in the late morning and early afternoon becoming
partly cloudy. A chance of showers until late afternoon, then a
slight chance of showers early in the afternoon. A slight chance
of waterspouts. Waves 2 to 4 feet.
.FRIDAY NIGHT...North winds 10 to 15 knots becoming northwest
5 to 10 knots in the late evening and overnight. Mostly clear.
Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight.
.SATURDAY...Northwest winds 5 to 10 knots veering to the north
early in the afternoon. Sunny. Waves 2 feet or less.

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

$$

LEZ444-290345-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
339 PM EDT Thu Aug 28 2025

.TONIGHT...Northwest winds 10 to 15 knots veering to the north in
the late evening and overnight. Partly cloudy. A chance of
showers and thunderstorms in the evening. A chance of waterspouts
in the evening. Waves 2 feet or less.
.FRIDAY...North winds 5 to 10 knots. Mostly sunny early in the
morning becoming partly cloudy. Waves 2 feet or less.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Partly cloudy
early in the evening then clearing. Waves 2 feet or less.
.SATURDAY...Light and variable winds. Sunny. Waves 2 feet or
less.

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

The water temperature at Belle Isle is 69 degrees.

$$

AM

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