747
FZUS53 KDTX 161942
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
342 PM EDT Wed Jul 16 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.

LHZ422-170400-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
342 PM EDT Wed Jul 16 2025

.TONIGHT...South winds 5 to 10 knots becoming southwest 10 to
15 knots early in the morning. Partly cloudy. A chance of showers
and thunderstorms in the evening, then showers likely and a
chance of thunderstorms after midnight. Waves 2 feet or less.
.THURSDAY...Northwest winds 15 to 20 knots. Mostly cloudy with a
slight chance of showers in the morning, then partly cloudy in
the afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots in the late evening and overnight. Mostly clear. Waves
1 to 3 feet.
.FRIDAY...East winds 5 to 10 knots. Sunny. Waves 2 feet or less.

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

$$

LHZ421-170400-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
342 PM EDT Wed Jul 16 2025

.TONIGHT...South winds 5 to 10 knots becoming southwest 10 to
15 knots early in the morning. Partly cloudy with a chance of
showers and thunderstorms in the evening, then showers and a
chance of thunderstorms after midnight. Waves 2 feet or less.
.THURSDAY...Northwest winds 15 to 20 knots. Mostly cloudy. A
slight chance of showers in the morning. Waves 1 to 3 feet
building to 3 to 5 feet in the late morning and afternoon. Waves
occasionally around 7 feet. A Small Craft Advisory may be needed.
.THURSDAY NIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Partly cloudy in the evening then
clearing. Waves 3 to 5 feet. Waves occasionally around 7 feet.
.FRIDAY...East winds 5 to 10 knots. Sunny. Waves 2 feet or less.

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

$$

LHZ441-170400-
Port Austin to Harbor Beach MI-
342 PM EDT Wed Jul 16 2025

.TONIGHT...South winds 5 to 10 knots. Partly cloudy in the
evening becoming mostly cloudy. Light showers likely and a chance
of thunderstorms. Waves 2 feet or less.
.THURSDAY...Northwest winds 15 to 20 knots. Mostly cloudy. A
slight chance of showers and thunderstorms in the morning. Waves
1 to 3 feet building to 3 to 5 feet in the late morning and
afternoon. Waves occasionally around 7 feet. A Small Craft
Advisory may be needed.
.THURSDAY NIGHT...North winds 15 to 20 knots becoming northeast
10 to 15 knots after midnight. Mostly clear. Waves 4 to 6 feet
subsiding to 2 to 4 feet after midnight. Waves occasionally
around 8 feet.
.FRIDAY...East winds 5 to 10 knots. Sunny. Waves 1 to 3 feet.

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

$$

LHZ442-170400-
Harbor Beach to Port Sanilac MI-
342 PM EDT Wed Jul 16 2025

.TONIGHT...South winds 5 to 10 knots increasing to 10 to 15 knots
early in the morning. Partly cloudy with a chance of showers and
thunderstorms in the evening, then mostly cloudy with showers
likely and a chance of thunderstorms after midnight. Waves 2 feet
or less.
.THURSDAY...Southwest winds 10 to 15 knots becoming northwest
15 to 20 knots in the late morning and afternoon. Mostly cloudy.
A slight chance of showers and thunderstorms in the morning.
Waves 2 feet or less building to 3 to 5 feet in the late morning
and afternoon. Waves occasionally around 7 feet. A Small Craft
Advisory may be needed.
.THURSDAY NIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots in the late evening and overnight. Partly cloudy. Waves
3 to 5 feet. Waves occasionally around 7 feet.
.FRIDAY...Northeast winds 10 to 15 knots diminishing to 5 to
10 knots in the late morning and afternoon. Sunny. Waves 1 to
3 feet.

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

$$

LHZ443-170400-
Port Sanilac to Port Huron MI-
342 PM EDT Wed Jul 16 2025

.TONIGHT...South winds 5 to 10 knots becoming southwest 10 to
15 knots early in the morning. Partly cloudy with a chance of
showers and thunderstorms. Waves 2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots becoming northwest
15 to 20 knots in the late morning and afternoon. Partly cloudy
with a chance of showers and a slight chance of thunderstorms in
the morning, then mostly cloudy in the afternoon. Waves 1 to
3 feet building to 2 to 4 feet early in the afternoon.
.THURSDAY NIGHT...North winds 15 to 20 knots becoming northeast 10 to
15 knots after midnight. Mostly cloudy in the evening becoming partly
cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet. A Small
Craft Advisory may be needed.
.FRIDAY...Northeast winds 10 to 15 knots diminishing to 5 to
10 knots in the late morning and afternoon. Sunny. Waves 1 to
3 feet.

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

$$

LEZ444-170400-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
342 PM EDT Wed Jul 16 2025

.TONIGHT...South winds 5 to 10 knots becoming southwest 10 to
15 knots after midnight. Partly cloudy. A chance of thunderstorms
and a slight chance of showers in the evening, then a slight
chance of showers and thunderstorms after midnight. Waves 1 to
3 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots early in the afternoon. Partly cloudy. A slight chance
of showers and thunderstorms in the morning. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.
.THURSDAY NIGHT...Northwest winds 10 to 15 knots veering to the
north in the late evening and overnight. Partly cloudy. Waves
2 feet or less.
.FRIDAY...East winds 5 to 10 knots. Partly cloudy in the morning
then clearing. 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.

$$

TF

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