147
FZUS53 KDTX 041355
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
955 AM EDT Thu Sep 4 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.

LHZ422-042200-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
955 AM EDT Thu Sep 4 2025

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.REST OF TODAY...West winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 15 to 20 knots becoming south 20 to
25 knots after midnight. Partly cloudy. A chance of showers after
midnight. Waves 1 to 3 feet building to 3 to 5 feet after
midnight. Waves occasionally around 7 feet.
.FRIDAY...Southwest winds to 30 knots veering to the west early
in the afternoon. Gusts to 35 knot gales. Mostly cloudy early in
the morning becoming partly cloudy. A slight chance of showers
until late afternoon. Waves 4 to 6 feet. Waves occasionally
around 8 feet.
.FRIDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots
becoming southwest 15 to 20 knots in the late evening and
overnight. Mostly clear. Waves 3 to 5 feet subsiding to 1 to
3 feet after midnight. Waves occasionally around 7 feet.

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

$$

LHZ421-042200-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
955 AM EDT Thu Sep 4 2025

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.REST OF TODAY...West winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 15 to 20 knots becoming south 20 to
25 knots after midnight. Partly cloudy. A chance of showers after
midnight. Waves 1 to 3 feet building to 3 to 5 feet after
midnight. Waves occasionally around 7 feet.
.FRIDAY...South winds to 30 knots veering to the west early in
the afternoon. Gusts to 40 knot gales. Mostly cloudy early in the
morning becoming partly cloudy. A chance of showers early in the
morning. Waves 6 to 9 feet. Waves occasionally around 12 feet.
.FRIDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 15 to 20 knots in the late evening and overnight.
Partly cloudy. Waves 5 to 7 feet subsiding to 3 to 5 feet in the
late evening and overnight. Waves occasionally around 10 feet.

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

$$

LHZ441-042200-
Port Austin to Harbor Beach MI-
955 AM EDT Thu Sep 4 2025

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.REST OF TODAY...West winds 10 to 15 knots. Partly cloudy late in
the morning then clearing. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 10 to 15 knots becoming south 15 to
20 knots after midnight. Partly cloudy. A slight chance of. Waves
1 to 3 feet.
.FRIDAY...South winds to 30 knots with gusts to 35 knot gales
veering to the west with gusts to 40 knot gales early in the
afternoon. Mostly cloudy early in the morning becoming partly
cloudy. A chance of showers until late afternoon. Waves 5 to
7 feet building to 6 to 9 feet early in the afternoon. Waves
occasionally around 12 feet.
.FRIDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 15 to 20 knots in the late evening and overnight.
Partly cloudy. Waves 5 to 7 feet subsiding to 3 to 5 feet in the
late evening and overnight. Waves occasionally around 10 feet.

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

$$

LHZ442-042200-
Harbor Beach to Port Sanilac MI-
955 AM EDT Thu Sep 4 2025

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.REST OF TODAY...Northwest winds 10 to 15 knots becoming west
5 to 10 knots in the afternoon. Partly cloudy late in the morning
then clearing. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to
20 knots after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...South winds 20 to 25 knots becoming southwest to
30 knots in the late morning and afternoon. Gusts to 35 knot
gales. Partly cloudy. A slight chance of showers until late
afternoon. Waves 4 to 6 feet. Waves occasionally around 7 feet.
.FRIDAY NIGHT...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 10 to 15 knots in the late evening and overnight.
Partly cloudy. Waves 2 to 4 feet subsiding to 2 feet or less in
the late evening and overnight.

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

$$

LHZ443-042200-
Port Sanilac to Port Huron MI-
955 AM EDT Thu Sep 4 2025

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY
EVENING...

.REST OF TODAY...Northwest winds 10 to 15 knots becoming west
5 to 10 knots in the afternoon. Partly cloudy late in the morning
then clearing. Waves 2 feet or less.
.TONIGHT...West winds 5 to 10 knots becoming south 10 to 15 knots
after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...South winds 20 to 25 knots with gusts to 30 knots
veering to the west with gusts to 35 knot gales early in the
afternoon. Partly cloudy early in the morning becoming mostly
sunny. Waves 4 to 6 feet. Waves occasionally around 8 feet.
.FRIDAY NIGHT...West winds 20 to 25 knots becoming southwest
10 to 15 knots. Partly cloudy. Waves 2 to 4 feet subsiding to
2 feet or less in the late evening and overnight.

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

$$

LEZ444-042200-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
955 AM EDT Thu Sep 4 2025

.REST OF TODAY...Northwest winds 10 to 15 knots becoming west
5 to 10 knots in the afternoon. Partly cloudy. Waves 2 feet or
less.
.TONIGHT...West winds 5 to 10 knots becoming south 10 to 15 knots
after midnight. Mostly clear. Waves 2 feet or less.
.FRIDAY...South winds 15 to 20 knots becoming southwest 20 to 25
knots in the late morning and afternoon. Mostly sunny until late
afternoon becoming partly cloudy. Waves 3 to 5 feet. Waves
occasionally around 7 feet. A Small Craft Advisory may be needed.
.FRIDAY NIGHT...West winds 15 to 20 knots diminishing to 5 to
10 knots. Partly cloudy. Waves 1 to 3 feet.

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

The water temperature at Belle Isle is 70 degrees.

$$

BT

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