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FZUS53 KDTX 030758
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
358 AM EDT Wed Sep 3 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.

LHZ422-031600-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
358 AM EDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...Southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to 30 knots. Mostly sunny in the morning,
then mostly cloudy with a chance of showers and thunderstorms in
the afternoon. A slight chance of waterspouts in the afternoon.
Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon.
.TONIGHT...Southwest winds 20 to 25 knots with gusts to 30 knots
becoming northwest 15 to 20 knots in the late evening and
overnight. A slight chance of waterspouts early in the evening. A
chance of thunderstorms early in the evening. Rain showers until
early morning, then a chance of showers after midnight. Waves
2 to 4 feet subsiding to 1 to 3 feet in the late evening and
overnight.
.THURSDAY...West winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. Partly cloudy early in the
morning then clearing. A chance of showers early in the morning.
Waves 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 15 to 20 knots becoming south
20 to 25 knots with gusts to 30 knots after midnight. Mostly
clear until early morning becoming mostly cloudy. A chance of
showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet
after midnight.

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

$$

LHZ421-031600-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
358 AM EDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...Southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to 30 knots. Partly cloudy in the morning,
then mostly cloudy with a chance of showers and thunderstorms in
the afternoon. A chance of waterspouts in the afternoon. Waves
1 to 3 feet building to 2 to 4 feet late in the afternoon.
.TONIGHT...Southwest winds 20 to 25 knots with gusts to 30 knots
becoming northwest 15 to 20 knots in the late evening and
overnight. A slight chance of waterspouts early in the evening. A
chance of thunderstorms early in the evening. Rain showers until
early morning, then a chance of showers after midnight. Waves
2 to 4 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and early afternoon, then becoming
southwest 15 to 20 knots early in the afternoon. Partly cloudy
with a chance of showers early in the morning, then mostly sunny
in the late morning and afternoon. Waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and early afternoon, then
building to 2 to 4 feet early in the afternoon.
.THURSDAY NIGHT...Southwest winds 15 to 20 knots becoming south
20 to 25 knots with gusts to 30 knots after midnight. Partly
cloudy until early morning becoming mostly cloudy. A chance of
showers after midnight. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and early morning, then building to
2 to 4 feet after midnight.

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

$$

LHZ441-031600-
Port Austin to Harbor Beach MI-
358 AM EDT Wed Sep 3 2025

.TODAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. Partly cloudy in the
morning, then mostly cloudy with a chance of showers and
thunderstorms in the afternoon. A chance of waterspouts in the
afternoon. Waves 1 to 3 feet.
.TONIGHT...West winds 15 to 20 knots veering to the northwest
after midnight. A slight chance of waterspouts early in the
evening. A chance of thunderstorms early in the evening. Rain
showers. A slight chance of thunderstorms in the late evening and
early morning. Waves 2 to 4 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. Rain showers early in
the morning, then mostly sunny in the late morning and afternoon.
Waves 2 to 4 feet subsiding to 1 to 3 feet early in the
afternoon.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots becoming south
15 to 20 knots after midnight. Partly cloudy until early morning
becoming mostly cloudy. A chance of showers after midnight. Waves
1 to 3 feet.

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

$$

LHZ442-031600-
Harbor Beach to Port Sanilac MI-
358 AM EDT Wed Sep 3 2025

.TODAY...South winds 10 to 15 knots becoming southwest 15 to
20 knots in the afternoon. Mostly sunny in the morning, then
mostly cloudy with a chance of showers and thunderstorms in the
afternoon. A chance of waterspouts in the afternoon. Waves 1 to
3 feet.
.TONIGHT...Southwest winds 10 to 15 knots veering to the
northwest after midnight. A chance of waterspouts early in the
evening. A slight chance of waterspouts in the late evening and
early morning. A chance of thunderstorms early in the evening.
Rain showers. A slight chance of thunderstorms in the late
evening and early morning. Waves 1 to 3 feet.
.THURSDAY...West winds 10 to 15 knots. Rain showers early in the
morning, then mostly sunny in the late morning and afternoon.
Waves 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots after midnight. Partly cloudy. Waves 2 feet or
less.

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

$$

LHZ443-031600-
Port Sanilac to Port Huron MI-
358 AM EDT Wed Sep 3 2025

.TODAY...South winds 10 to 15 knots increasing to 15 to 20 knots
in the afternoon. Mostly sunny in the morning, then partly cloudy
with a slight chance of showers and thunderstorms in the
afternoon. A slight chance of waterspouts in the afternoon. Waves
1 to 3 feet.
.TONIGHT...Southwest winds 15 to 20 knots becoming west 10 to
15 knots in the late evening and overnight. A chance of
waterspouts early in the evening. Light showers and a slight
chance of thunderstorms until early morning, then showers after
midnight. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. Rain showers early in
the morning, then mostly sunny in the late morning and afternoon.
Waves 1 to 3 feet.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots becoming south
15 to 20 knots after midnight. Partly cloudy. Waves 2 feet or
less.

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

$$

LEZ444-031600-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
358 AM EDT Wed Sep 3 2025

.TODAY...Southwest winds 5 to 10 knots increasing to 10 to
15 knots in the afternoon. Sunny in the morning, then partly
cloudy with a slight chance of showers in the afternoon. Waves
2 feet or less.
.TONIGHT...West winds 10 to 15 knots. Partly cloudy early in the
evening. A slight chance of waterspouts until early morning.
Light showers likely and a slight chance of thunderstorms until
early morning, then showers and a slight chance of thunderstorms
after midnight. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 10 to 15 knots becoming west 5 to
10 knots early in the afternoon. Rain showers early in the
morning, then mostly sunny in the late morning and afternoon.
Waves 2 feet or less.
.THURSDAY NIGHT...West winds 5 to 10 knots becoming south 15 to
20 knots after midnight. Mostly clear. Waves 1 to 3 feet.

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

The water temperature at Belle Isle is 70 degrees.

$$

KGK

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