198
FZUS53 KDTX 231333
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
933 AM EDT Sat Aug 23 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.

LHZ422-232145-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
933 AM EDT Sat Aug 23 2025

.REST OF TODAY...Southwest winds 15 to 20 knots diminishing to
10 to 15 knots early in the afternoon, then increasing to 15 to
20 knots late in the afternoon. Partly cloudy with a chance of
showers and a slight chance of thunderstorms late in the morning,
then mostly sunny with a chance of showers and thunderstorms in
the afternoon. A chance of waterspouts. Waves 1 to 3 feet.
.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots in the late evening and overnight. Mostly clear. A
chance of showers and a slight chance of thunderstorms early in
the evening. A chance of waterspouts early in the evening. Waves
1 to 3 feet.
.SUNDAY...West winds 5 to 10 knots increasing to 15 to 20 knots.
Mostly sunny until late afternoon becoming partly cloudy. A
chance of showers early in the afternoon. Waves 2 feet or less.
.SUNDAY NIGHT...Northwest winds 15 to 20 knots. Mostly clear. A
chance of showers early in the evening. A chance of waterspouts
early in the evening. Waves 1 to 3 feet.

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

$$

LHZ421-232145-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
933 AM EDT Sat Aug 23 2025

.REST OF TODAY...Southwest winds 15 to 20 knots. Partly cloudy
with a chance of showers and a slight chance of thunderstorms
late in the morning, then mostly sunny with a chance of showers
and thunderstorms in the afternoon. A chance of waterspouts.
Waves 1 to 3 feet.
.TONIGHT...West winds 15 to 20 knots becoming northwest 10 to
15 knots in the late evening and overnight. Mostly clear. A
chance of showers and thunderstorms early in the evening. A
chance of waterspouts early in the evening. Waves 1 to 3 feet.
.SUNDAY...West winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. Mostly sunny until late
afternoon becoming partly cloudy. A chance of showers early in
the afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 15 to 20 knots. Mostly clear. A
chance of showers early in the evening. Waves 1 to 3 feet
building to 2 to 4 feet after midnight.

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

$$

LHZ441-232145-
Port Austin to Harbor Beach MI-
933 AM EDT Sat Aug 23 2025

.REST OF TODAY...Southwest winds 10 to 15 knots. Mostly cloudy
late in the morning becoming partly cloudy. A chance of showers
and a slight chance of thunderstorms late in the morning, then a
chance of showers and thunderstorms in the afternoon. A chance of
waterspouts. Waves 1 to 3 feet.
.TONIGHT...Northwest winds 10 to 15 knots. Mostly clear. A chance
of showers and thunderstorms early in the evening, then a slight
chance of showers and thunderstorms in the late evening and early
morning. A chance of waterspouts early in the evening, then a
slight chance of waterspouts in the late evening and early
morning. Waves 1 to 3 feet.
.SUNDAY...West winds 5 to 10 knots increasing to 10 to 15 knots
in the late morning and afternoon. Mostly sunny. A chance of
showers early in the afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 to 15 knots increasing to
15 to 20 knots after midnight. Partly cloudy. A chance of
showers. Waves 1 to 3 feet building to 2 to 4 feet after
midnight.

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

$$

LHZ442-232145-
Harbor Beach to Port Sanilac MI-
933 AM EDT Sat Aug 23 2025

.REST OF TODAY...Southwest winds 10 to 15 knots. Mostly cloudy. A
slight chance of showers late in the morning, then a chance of
showers and thunderstorms in the afternoon. A slight chance of
waterspouts late in the morning, then a chance of waterspouts in
the afternoon. Waves 2 feet or less.
.TONIGHT...West winds 10 to 15 knots becoming northwest 5 to
10 knots after midnight. Mostly clear. A chance of showers and
thunderstorms early in the evening, then a slight chance of
showers and thunderstorms in the late evening and early morning.
A chance of waterspouts early in the evening, then a slight
chance of waterspouts in the late evening and early morning.
Waves 2 feet or less.
.SUNDAY...West winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. Mostly sunny until late afternoon, then
partly cloudy with a chance of showers early in the afternoon. A
chance of waterspouts early in the afternoon. Waves 2 feet or
less.
.SUNDAY NIGHT...West winds 10 to 15 knots. Partly cloudy. A
chance of showers until early morning. A chance of waterspouts
until early morning. Waves 2 feet or less.

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

$$

LHZ443-232145-
Port Sanilac to Port Huron MI-
933 AM EDT Sat Aug 23 2025

.REST OF TODAY...Southwest winds 10 to 15 knots. Mostly cloudy. A
slight chance of showers late in the morning, then a chance of
showers and thunderstorms in the afternoon. A slight chance of
waterspouts late in the morning. A chance of waterspouts in the
afternoon. Waves 2 feet or less.
.TONIGHT...West winds 10 to 15 knots. Mostly clear. A chance of
showers and thunderstorms early in the evening, then a slight
chance of showers and thunderstorms in the late evening and early
morning. A slight chance of waterspouts until early morning.
Waves 2 feet or less.
.SUNDAY...West winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. Sunny until late afternoon becoming
partly cloudy. A chance of showers early in the afternoon. A
chance of waterspouts early in the afternoon. Waves 2 feet or
less.
.SUNDAY NIGHT...West winds 10 to 15 knots. Mostly clear. A chance
of showers early in the evening. Waves 2 feet or less.

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

$$

LEZ444-232145-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
933 AM EDT Sat Aug 23 2025

.REST OF TODAY...Southwest winds 10 to 15 knots. Partly cloudy
late in the morning, then mostly cloudy with a chance of showers
and thunderstorms in the afternoon. Waves 2 feet or less.
.TONIGHT...West winds 10 to 15 knots. Partly cloudy. A chance of
showers and thunderstorms early in the evening, then a slight
chance of showers and thunderstorms in the late evening and early
morning. A slight chance of waterspouts until early morning.
Waves 2 feet or less.
.SUNDAY...West winds 5 to 10 knots increasing to 10 to 15 knots
early in the afternoon. Mostly sunny until late afternoon
becoming partly cloudy. A slight chance of. Waves 2 feet or less.
.SUNDAY NIGHT...West winds 10 to 15 knots. Mostly clear. 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.

$$

JA

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