555
FZUS53 KDTX 300123
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
923 PM EDT Tue Jul 29 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.

LHZ422-300930-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
923 PM EDT Tue Jul 29 2025

.REST OF TONIGHT...Northeast winds 5 to 10 knots becoming north
10 to 15 knots after midnight. Mostly clear. A slight chance of
showers and thunderstorms this evening. Waves 2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots. Partly cloudy. A slight
chance of showers early in the afternoon. Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots diminishing to
10 to 15 knots in the late evening and overnight. Mostly cloudy.
A slight chance of showers early in the evening, then a chance of
showers in the late evening and overnight. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Partly cloudy with a
chance of showers early in the morning, then mostly sunny in the
late morning and afternoon. Waves 1 to 3 feet building to 2 to
4 feet early in the afternoon.

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

$$

LHZ421-300930-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
923 PM EDT Tue Jul 29 2025

.REST OF TONIGHT...East winds 5 to 10 knots becoming north 10 to
15 knots after midnight. Partly cloudy. A slight chance of
showers and thunderstorms this evening. Waves 2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots. Partly cloudy. Waves
1 to 3 feet.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots becoming north
10 to 15 knots in the late evening and early morning, then
becoming northeast 15 to 20 knots after midnight. Mostly cloudy
with a slight chance of showers. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Partly cloudy early
in the morning then clearing. Waves 2 to 4 feet.

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

$$

LHZ441-300930-
Port Austin to Harbor Beach MI-
923 PM EDT Tue Jul 29 2025

.REST OF TONIGHT...East winds 5 to 10 knots backing to the
northeast after midnight, then becoming north 10 to 15 knots
early in the morning. Partly cloudy. A slight chance of showers
and thunderstorms this evening. Waves 2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots. Partly cloudy. Waves
1 to 3 feet.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Cloudy with a
slight chance of showers. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots in the late morning and early afternoon, then increasing
to 15 to 20 knots early in the afternoon. Partly cloudy until
late afternoon then clearing. Waves 2 to 4 feet.

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

$$

LHZ442-300930-
Harbor Beach to Port Sanilac MI-
923 PM EDT Tue Jul 29 2025

.REST OF TONIGHT...East winds 5 to 10 knots backing to the north
early in the morning. Partly cloudy. A slight chance of showers
and thunderstorms this evening. Waves 2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots. Mostly sunny until late
afternoon becoming partly cloudy. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...North winds 10 to 15 knots. Cloudy. A slight
chance of showers until early morning, then a chance of showers
after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight.
.THURSDAY...Northeast winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. Mostly cloudy becoming partly
cloudy in the late morning and early afternoon becoming mostly
sunny. A chance of showers early in the morning. Waves 1 to
3 feet building to 2 to 4 feet in the late morning and afternoon.

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

$$

LHZ443-300930-
Port Sanilac to Port Huron MI-
923 PM EDT Tue Jul 29 2025

.REST OF TONIGHT...East winds 5 to 10 knots backing to the north
early in the morning. Mostly clear. A slight chance of showers
and thunderstorms this evening. Waves 2 feet or less.
.WEDNESDAY...North winds 10 to 15 knots. Partly cloudy becoming
mostly sunny in the late morning and early afternoon becoming
partly cloudy. A slight chance of showers and thunderstorms early
in the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...North winds 15 to 20 knots becoming northeast
10 to 15 knots after midnight. Mostly cloudy. A chance of showers
and a slight chance of thunderstorms early in the evening, then a
chance of showers in the late evening and overnight. Waves 2 to
4 feet.
.THURSDAY...Northeast winds 10 to 15 knots becoming north 15 to
20 knots early in the afternoon. Mostly cloudy with a chance of
showers early in the morning, then partly cloudy in the late
morning and afternoon. Waves 1 to 3 feet building to 2 to 4 feet
early in the afternoon.

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

$$

LEZ444-300930-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
923 PM EDT Tue Jul 29 2025

.REST OF TONIGHT...South winds 5 to 10 knots veering to the west
early in the morning. Mostly clear. A slight chance of showers
and thunderstorms this evening. Waves 2 feet or less.
.WEDNESDAY...Northwest winds 5 to 10 knots veering to the
northeast in the late morning and afternoon. Mostly sunny until
late afternoon, then partly cloudy with a chance of showers and
thunderstorms early in the afternoon. Waves 2 feet or less.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 knots. Mostly cloudy
with a chance of showers and thunderstorms. Waves 1 to 3 feet.
.THURSDAY...Northeast winds 10 to 15 knots. Mostly cloudy. A
chance of showers until late afternoon. Waves 1 to 3 feet.

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

The water temperature at Belle Isle is 78 degrees.

$$

MR

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