923
FZUS53 KDTX 170148
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
948 PM EDT Sat Aug 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.

LHZ422-171000-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
948 PM EDT Sat Aug 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH
SUNDAY EVENING...

.REST OF TONIGHT...Southwest winds 10 to 15 knots veering to the
northwest after midnight. Mostly cloudy. Light showers likely and
a slight chance of thunderstorms this evening, then showers
likely after midnight. Waves 2 feet or less.
.SUNDAY...North winds 15 to 20 knots becoming northeast 20 to
25 knots in the late morning and early afternoon, then
diminishing to 15 to 20 knots with gusts to 30 knots early in the
afternoon. Mostly cloudy with a chance of showers early in the
morning, then mostly cloudy with a slight chance of showers in
the late morning and early afternoon. Partly cloudy early in the
afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late
morning and afternoon.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots becoming east
15 to 20 knots in the late evening and overnight. Mostly clear.
Waves 2 to 4 feet.
.MONDAY...Southeast winds 10 to 15 knots. Mostly sunny until late
afternoon, then partly cloudy with a chance of showers and
thunderstorms early in the afternoon. Waves 1 to 3 feet.

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

$$

LHZ421-171000-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
948 PM EDT Sat Aug 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT SUNDAY THROUGH
MONDAY MORNING...

.REST OF TONIGHT...Southwest winds 10 to 15 knots veering to the
northwest after midnight. Mostly cloudy. Light showers likely and
a slight chance of thunderstorms this evening, then a chance of
showers after midnight. Waves 2 feet or less.
.SUNDAY...North winds 15 to 20 knots becoming northeast 20 to
25 knots in the late morning and early afternoon, then
diminishing to 15 to 20 knots early in the afternoon. Mostly
cloudy with a chance of showers early in the morning, then mostly
cloudy with a slight chance of showers in the late morning and
early afternoon. Partly cloudy early in the afternoon. Waves 3 to
5 feet building to 5 to 7 feet in the late morning and afternoon.
Waves occasionally around 10 feet.
.SUNDAY NIGHT...Northeast winds 20 to 25 knots becoming east
15 to 20 knots in the late evening and overnight. Mostly clear.
Waves 4 to 6 feet. Waves occasionally around 8 feet.
.MONDAY...East winds 15 to 20 knots becoming southeast 10 to
15 knots 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 3 to 5 feet subsiding
to 1 to 3 feet early in the afternoon. Waves occasionally around
7 feet.

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

$$

LHZ441-171000-
Port Austin to Harbor Beach MI-
948 PM EDT Sat Aug 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT SUNDAY THROUGH
MONDAY MORNING...

.REST OF TONIGHT...Southwest winds 5 to 10 knots becoming
northwest 10 to 15 knots after midnight. Mostly cloudy. Light
showers likely and a slight chance of thunderstorms this evening,
then a chance of showers after midnight. Waves 2 feet or less.
.SUNDAY...Northeast winds 15 to 20 knots. Mostly cloudy with a
chance of showers early in the morning, then mostly cloudy with a
slight chance of showers in the late morning and early afternoon.
Partly cloudy early in the afternoon. Waves 3 to 5 feet building
to 5 to 7 feet in the late morning and afternoon. Waves
occasionally around 10 feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Mostly clear.
Waves 4 to 6 feet. Waves occasionally around 8 feet.
.MONDAY...Southeast winds 10 to 15 knots. Mostly sunny until late
afternoon, then partly cloudy with a chance of showers early in
the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet early
in the afternoon.

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

$$

LHZ442-171000-
Harbor Beach to Port Sanilac MI-
948 PM EDT Sat Aug 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...

.REST OF TONIGHT...Southwest winds 5 to 10 knots veering to the
northwest early in the morning. Mostly cloudy. Light showers
likely and a slight chance of thunderstorms this evening, then
showers likely after midnight. Waves 2 feet or less.
.SUNDAY...North winds 10 to 15 knots increasing to 20 to 25 knots
with gusts to 30 knots. Mostly cloudy with showers likely early
in the morning, then mostly cloudy with a slight chance of
showers in the late morning and early afternoon. Partly cloudy
early in the afternoon. Waves 2 to 4 feet building to 5 to 7 feet
in the late morning and afternoon. Waves occasionally around
10 feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots. Mostly clear.
Waves 4 to 6 feet. Waves occasionally around 8 feet.
.MONDAY...Southeast winds 10 to 15 knots. Mostly sunny. Waves
2 to 4 feet subsiding to 1 to 3 feet in the late morning and
afternoon.

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

$$

LHZ443-171000-
Port Sanilac to Port Huron MI-
948 PM EDT Sat Aug 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...

.REST OF TONIGHT...Southwest winds 5 to 10 knots veering to the
northwest early in the morning. Partly cloudy this evening
becoming mostly cloudy. Light showers likely and a chance of
thunderstorms this evening, then showers likely and a slight
chance of thunderstorms after midnight. Waves 2 feet or less.
.SUNDAY...North winds 10 to 15 knots increasing to 20 to
25 knots. Mostly cloudy with a slight chance of showers until
late afternoon, then partly cloudy early in the afternoon. Waves
1 to 3 feet building to 5 to 7 feet in the late morning and
afternoon. Waves occasionally around 10 feet.
.SUNDAY NIGHT...North winds 20 to 25 knots becoming northeast
15 to 20 knots in the late evening and overnight. Mostly clear.
Waves 4 to 6 feet. Waves occasionally around 8 feet.
.MONDAY...East winds 10 to 15 knots becoming southeast 5 to
10 knots early in the afternoon. Mostly sunny. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.

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

$$

LEZ444-171000-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
948 PM EDT Sat Aug 16 2025

.REST OF TONIGHT...Southwest winds 5 to 10 knots becoming west
10 to 15 knots early in the morning. Partly cloudy. A chance of
showers and a slight chance of thunderstorms this evening, then a
chance of showers after midnight. Waves 2 feet or less.
.SUNDAY...Northwest winds 10 to 15 knots veering to the north
early in the afternoon. Partly cloudy. A chance of showers until
late afternoon, then a chance of showers and thunderstorms early
in the afternoon. Waves 2 feet or less.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots. Partly cloudy. A
chance of showers and thunderstorms early in the evening. Waves
1 to 3 feet.
.MONDAY...East winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. Partly cloudy early 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 79 degrees.

$$

AA

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