918
FZUS53 KDTX 242001
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
401 PM EDT Sun Aug 24 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.

LHZ422-250415-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
401 PM EDT Sun Aug 24 2025

.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Partly cloudy. A slight chance of
waterspouts in the evening. Scattered showers and isolated
thunderstorms in the evening, then isolated showers after
midnight. Waves 1 to 3 feet.
.MONDAY...West winds 10 to 15 knots becoming northwest 15 to
20 knots early in the afternoon. Partly cloudy. Isolated showers
in the late morning and early afternoon. Scattered showers early
in the afternoon. A slight chance of waterspouts in the late
morning and afternoon. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 15 to 20 knots. Mostly clear.
Scattered showers early in the evening. Waves 1 to 3 feet.
.TUESDAY...Northwest winds 10 to 15 knots. Mostly sunny. Waves
1 to 3 feet.

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

$$

LHZ421-250415-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
401 PM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

.TONIGHT...Northwest winds 15 to 20 knots. Partly cloudy.
Numerous showers and scattered thunderstorms in the evening, then
isolated showers after midnight. A slight chance of waterspouts.
Waves 1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.
.MONDAY...West winds 15 to 20 knots. Partly cloudy. Isolated
showers until late afternoon, then scattered showers early in the
afternoon. A slight chance of waterspouts. Waves 2 to 4 feet.
.MONDAY NIGHT...Northwest winds 15 to 20 knots. Mostly clear.
Scattered showers early in the evening. Waves 3 to 5 feet. Waves
occasionally around 7 feet.
.TUESDAY...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots in the late morning and 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.

$$

LHZ441-250415-
Port Austin to Harbor Beach MI-
401 PM EDT Sun Aug 24 2025

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

.TONIGHT...West winds 10 to 15 knots becoming northwest 15 to
20 knots in the late evening and overnight. Partly cloudy.
Scattered showers and thunderstorms in the evening, then
scattered showers after midnight. A chance of waterspouts in the
evening. A slight chance of waterspouts after midnight. Waves
1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.
.MONDAY...Northwest winds 15 to 20 knots. Partly cloudy. Isolated
showers early in the morning, then scattered showers in the late
morning and afternoon. A slight chance of waterspouts. Waves 2 to
4 feet.
.MONDAY NIGHT...Northwest winds 15 to 20 knots. Partly cloudy.
Scattered showers early in the evening. Waves 4 to 6 feet. Waves
occasionally around 8 feet.
.TUESDAY...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots early in the afternoon. Mostly sunny. Waves 3 to 5 feet.
Waves occasionally around 7 feet.

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

$$

LHZ442-250415-
Harbor Beach to Port Sanilac MI-
401 PM EDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH
TUESDAY MORNING...

.TONIGHT...West winds 10 to 15 knots. Partly cloudy. Scattered
showers and thunderstorms in the evening, then isolated showers
after midnight. A slight chance of waterspouts. Waves 2 feet or
less.
.MONDAY...West winds 10 to 15 knots. Partly cloudy. Isolated
showers early in the morning, then scattered showers in the late
morning and afternoon. A slight chance of waterspouts in the late
morning and afternoon. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest winds 15 to 20 knots diminishing to
10 to 15 knots in the late evening and overnight. Partly cloudy.
Scattered showers early in the evening. Waves 2 to 4 feet
building to 3 to 5 feet in the late evening and overnight. Waves
occasionally around 7 feet.
.TUESDAY...Northwest winds 10 to 15 knots. Mostly sunny. Waves
2 to 4 feet.

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

$$

LHZ443-250415-
Port Sanilac to Port Huron MI-
401 PM EDT Sun Aug 24 2025

.TONIGHT...West winds 10 to 15 knots. Partly cloudy. Scattered
showers and isolated thunderstorms in the evening, then isolated
showers after midnight. A slight chance of waterspouts. Waves
2 feet or less.
.MONDAY...West winds 10 to 15 knots. Partly cloudy. Isolated
showers early in the morning, then scattered showers in the late
morning and afternoon. A slight chance of waterspouts in the late
morning and afternoon. Waves 2 feet or less.
.MONDAY NIGHT...Northwest winds 10 to 15 knots. Mostly clear.
Scattered showers early in the evening. Waves 1 to 3 feet.
.TUESDAY...Northwest winds 10 to 15 knots. Mostly sunny. Waves
1 to 3 feet.

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

$$

LEZ444-250415-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
401 PM EDT Sun Aug 24 2025

.TONIGHT...West winds 15 to 20 knots becoming northwest 10 to
15 knots after midnight. Mostly clear. Isolated showers in the
evening. A slight chance of waterspouts in the evening. Waves
2 feet or less.
.MONDAY...West winds 10 to 15 knots. Mostly sunny early in the
morning, then isolated showers in the late morning and early
afternoon. Partly cloudy with scattered showers and isolated
thunderstorms early in the afternoon. A slight chance of
waterspouts in the late morning and early afternoon. A chance of
waterspouts early in the afternoon. Waves 2 feet or less.
.MONDAY NIGHT...Northwest winds 10 to 15 knots. Mostly clear.
Scattered showers early in the evening. A chance of waterspouts
early in the evening. Waves 2 feet or less.
.TUESDAY...Northwest winds 5 to 10 knots increasing to 10 to
15 knots early in the afternoon. Mostly sunny. Waves 2 feet or
less.

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

The water temperature at Belle Isle is 73 degrees.

$$

KGK

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