806
FZUS53 KDTX 111342
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
942 AM EDT Mon Aug 11 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.

LHZ422-112200-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
942 AM EDT Mon Aug 11 2025

.REST OF TODAY...Southwest winds 10 to 15 knots. Mostly sunny
late in the morning becoming partly cloudy. A chance of showers
and thunderstorms in the afternoon. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Partly cloudy with a
chance of showers and thunderstorms. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots. Partly cloudy. A
chance of thunderstorms early in the morning. A chance of showers
until late afternoon, then showers and thunderstorms likely early
in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Mostly cloudy
early in the evening becoming partly cloudy. Light showers and
thunderstorms likely early in the evening. Waves 1 to 3 feet.

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

$$

LHZ421-112200-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
942 AM EDT Mon Aug 11 2025

.REST OF TODAY...Southwest winds 10 to 15 knots. Mostly sunny
late in the morning becoming partly cloudy. A chance of showers
and thunderstorms in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 10 to 15 knots. Partly cloudy with a
chance of showers and thunderstorms. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots. Partly cloudy. A
chance of thunderstorms early in the morning. A chance of showers
until late afternoon, then showers likely and a chance of
thunderstorms early in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Mostly cloudy
with showers likely and a chance of thunderstorms early in the
evening, then partly cloudy with a chance of showers in the late
evening and early morning. Mostly clear after midnight. Waves
1 to 3 feet.

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

$$

LHZ441-112200-
Port Austin to Harbor Beach MI-
942 AM EDT Mon Aug 11 2025

.REST OF TODAY...South winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Sunny late in the morning, then partly
cloudy with a chance of showers and thunderstorms in the
afternoon. Waves 2 feet or less.
.TONIGHT...South winds 10 to 15 knots becoming southwest 5 to
10 knots in the late evening and early morning, then increasing
to 10 to 15 knots after midnight. Partly cloudy. Light showers
likely and a chance of thunderstorms early in the evening, then a
slight chance of showers and thunderstorms in the late evening
and early morning. A chance of showers and thunderstorms after
midnight. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots. Partly cloudy. A
chance of thunderstorms early in the morning. A chance of showers
until late afternoon, then showers likely and a chance of
thunderstorms early in the afternoon. Waves 2 feet or less.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Mostly cloudy
until early morning becoming partly cloudy. Showers likely early
in the evening. A chance of thunderstorms until early morning. A
chance of showers in the late evening and early morning. Waves
2 feet or less.

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

$$

LHZ442-112200-
Harbor Beach to Port Sanilac MI-
942 AM EDT Mon Aug 11 2025

.REST OF TODAY...South winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Mostly sunny. Light showers likely and
a chance of thunderstorms in the afternoon. Waves 2 feet or less.
.TONIGHT...South winds 10 to 15 knots becoming southwest 5 to
10 knots in the late evening and overnight. Mostly cloudy early
in the evening becoming partly cloudy. Light showers likely and a
chance of thunderstorms early in the evening, then a slight
chance of showers and thunderstorms in the late evening and
overnight. Waves 2 feet or less.
.TUESDAY...Southwest winds 5 to 10 knots. Partly cloudy until
late afternoon becoming mostly cloudy. A chance of showers and a
slight chance of thunderstorms until late afternoon, then showers
likely and a chance of thunderstorms early in the afternoon.
Waves 2 feet or less.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Mostly cloudy
until early morning becoming partly cloudy. Showers likely early
in the evening. A chance of thunderstorms until early morning. A
chance of showers in the late evening and early morning. Waves
2 feet or less.

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

$$

LHZ443-112200-
Port Sanilac to Port Huron MI-
942 AM EDT Mon Aug 11 2025

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

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

$$

LEZ444-112200-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
942 AM EDT Mon Aug 11 2025

.REST OF TODAY...South winds 5 to 10 knots. Mostly sunny. A
chance of showers and a slight chance of thunderstorms in the
afternoon. Waves 2 feet or less.
.TONIGHT...South winds 5 to 10 knots. Partly cloudy. A chance of
showers and a slight chance of thunderstorms early in the
evening. Waves 2 feet or less.
.TUESDAY...Southwest winds 5 to 10 knots. Mostly sunny with a
slight chance of showers until late afternoon, then partly cloudy
with a chance of showers and thunderstorms early in the
afternoon. Waves 2 feet or less.
.TUESDAY NIGHT...Southwest winds 5 to 10 knots. Partly cloudy
with a chance of showers and thunderstorms until early morning,
then mostly cloudy with 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 78 degrees.

$$

TF

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