175
FZUS53 KDTX 170754
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
354 AM EDT Thu Jul 17 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.

LHZ422-171600-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
354 AM EDT Thu Jul 17 2025

.TODAY...Northwest winds 15 to 20 knots. Mostly cloudy with a
chance of showers in the morning, then partly cloudy in the
afternoon. Waves 1 to 3 feet.
.TONIGHT...North winds 15 to 20 knots becoming northeast 10 to
15 knots in the late evening and overnight. Partly cloudy in the
evening then clearing. Waves 2 feet or less.
.FRIDAY...East winds 5 to 10 knots. Sunny. Waves 2 feet or less.
.FRIDAY NIGHT...East winds 5 to 10 knots becoming south 10 to
15 knots in the late evening and overnight. Mostly clear. A
chance of showers after midnight. Waves 2 feet or less.

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

$$

LHZ421-171600-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
354 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
THIS EVENING...

.TODAY...Northwest winds 15 to 20 knots. Mostly cloudy. Showers
likely and a slight chance of 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.
.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots in the late evening and overnight. Partly cloudy in the
evening then clearing. Waves 3 to 5 feet subsiding to 1 to 3 feet
after midnight. Waves occasionally around 7 feet.
.FRIDAY...Northeast winds 5 to 10 knots veering to the east in
the late morning and afternoon. Sunny. Waves 2 feet or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming south
10 to 15 knots in the late evening and overnight. Mostly clear. A
chance of showers after midnight. Waves 2 feet or less.

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

$$

LHZ441-171600-
Port Austin to Harbor Beach MI-
354 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH
THIS EVENING...

.TODAY...Northwest winds 15 to 20 knots. Mostly cloudy. A chance
of thunderstorms and a slight chance of showers in the morning.
Waves 1 to 3 feet building to 4 to 6 feet in the late morning and
afternoon. Waves occasionally around 8 feet.
.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots in the late evening and overnight. Partly cloudy in the
evening then clearing. 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 2 feet or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Mostly clear. A
chance of showers after midnight. Waves 2 feet or less.

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

$$

LHZ442-171600-
Harbor Beach to Port Sanilac MI-
354 AM EDT Thu Jul 17 2025

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

.TODAY...West winds 10 to 15 knots becoming northwest 15 to
20 knots in the late morning and afternoon. Mostly cloudy. A
chance of showers and a slight chance of thunderstorms in the
morning, then a slight chance of showers in the afternoon. Waves
2 feet or less building to 3 to 5 feet in the late morning and
afternoon. Waves occasionally around 7 feet.
.TONIGHT...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...East winds 5 to 10 knots. Sunny. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots veering to the
south after midnight. Mostly clear. Waves 2 feet or less.

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

$$

LHZ443-171600-
Port Sanilac to Port Huron MI-
354 AM EDT Thu Jul 17 2025

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

.TODAY...West winds 15 to 20 knots veering to the northwest in
the afternoon. Mostly cloudy. A chance of showers in the morning,
then a slight chance of showers in the afternoon. Waves 1 to
3 feet building to 2 to 4 feet late in the afternoon.
.TONIGHT...North winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Mostly cloudy in the evening becoming
mostly clear. Waves 2 to 4 feet.
.FRIDAY...East winds 5 to 10 knots. Sunny. Waves 1 to 3 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots veering to the southeast
in the late evening and overnight. Mostly clear. Waves 2 feet or
less.

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

$$

LEZ444-171600-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
354 AM EDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

.TODAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots late in the afternoon. Partly cloudy in the morning then
clearing. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
afternoon. Waves occasionally around 5 feet.
.TONIGHT...North winds 10 to 15 knots veering to the northeast
after midnight. Partly cloudy. Waves 2 feet or less.
.FRIDAY...Northeast winds 5 to 10 knots veering to the east early
in the afternoon. Partly cloudy in the morning then clearing.
Waves 2 feet or less.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Partly cloudy. A
chance of showers after midnight. 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.

$$

KGK

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