FZUS53 KDTX 130731
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
331 AM EDT Mon Apr 13 2026

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.

LHZ422-131545-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
331 AM EDT Mon Apr 13 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.TODAY...Southwest winds 20 to 25 knots with gusts to 30 knots
becoming west 15 to 20 knots in the afternoon. Mostly cloudy with
a slight chance of showers in the morning, then mostly sunny in
the afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet late in
the afternoon. Waves occasionally around 7 feet.
.TONIGHT...Northeast winds 10 to 15 knots veering to the
southeast after midnight. Partly cloudy early in the evening,
then mostly cloudy with a chance of showers and thunderstorms in
the late evening and early morning. Rain showers and a chance of
thunderstorms after midnight. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots becoming southwest 20 to
25 knots in the late morning and early afternoon, then
diminishing to 15 to 20 knots early in the afternoon. Becoming
partly cloudy early in the afternoon. Rain showers and a chance
of thunderstorms early in the morning. A chance of showers in the
late morning and afternoon. A chance of thunderstorms early in
the afternoon. Waves 2 to 4 feet.
.TUESDAY NIGHT...Southwest winds 15 to 20 knots diminishing to
10 to 15 knots in the late evening and overnight. Partly cloudy
early in the evening. Rain showers and a chance of thunderstorms.
Waves 1 to 3 feet.

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

$$

LHZ421-131545-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
331 AM EDT Mon Apr 13 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.TODAY...Southwest winds 20 to 25 knots with gusts to 30 knots
becoming west 10 to 15 knots. Mostly cloudy with a chance of
showers in the morning, then partly cloudy in the afternoon.
Waves 4 to 6 feet subsiding to 2 to 4 feet late in the afternoon.
Waves occasionally around 8 feet.
.TONIGHT...Northeast winds 5 to 10 knots becoming southeast 10 to
15 knots in the late evening and overnight. Partly cloudy early
in the evening, then mostly cloudy with a chance of showers and
thunderstorms in the late evening and early morning. Rain showers
and a chance of thunderstorms after midnight. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 15 to 20 knots. Mostly cloudy until
late afternoon becoming partly cloudy. Light showers likely and a
chance of thunderstorms early in the morning, then a chance of
showers in the late morning and early afternoon. Waves 2 to
4 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy
early in the evening becoming mostly cloudy. Light showers likely
and a chance of thunderstorms. Waves 1 to 3 feet.

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

$$

LHZ441-131545-
Port Austin to Harbor Beach MI-
331 AM EDT Mon Apr 13 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.TODAY...Southwest winds 20 to 25 knots with gusts to 30 knots
becoming west 10 to 15 knots. Mostly cloudy with showers likely
in the morning, then partly cloudy in the afternoon. Waves 3 to
5 feet. Waves occasionally around 7 feet.
.TONIGHT...Northeast winds 5 to 10 knots veering to the southeast
in the late evening and early morning, then increasing to 10 to
15 knots after midnight. Partly cloudy early in the evening. A
chance of showers and a slight chance of thunderstorms in the
late evening and early morning. Rain showers and a chance of
thunderstorms after midnight. Waves 2 feet or less.
.TUESDAY...Southwest winds 15 to 20 knots. Mostly cloudy until
late afternoon becoming partly cloudy. Rain showers likely and a
chance of thunderstorms early in the morning, then a chance of
showers in the late morning and early afternoon. Waves 1 to
3 feet building to 2 to 4 feet in the late morning and afternoon.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy
early in the evening becoming mostly cloudy. Light showers likely
and a chance of thunderstorms. Waves 1 to 3 feet.

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

$$

LHZ442-131545-
Harbor Beach to Port Sanilac MI-
331 AM EDT Mon Apr 13 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.TODAY...Southwest winds 20 to 25 knots becoming west 10 to
15 knots. Partly cloudy. Light showers likely in the morning.
Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon.
.TONIGHT...North winds 5 to 10 knots veering to the east in the
late evening and early morning, then becoming south 10 to
15 knots after midnight. Partly cloudy early in the evening. A
slight chance of showers and thunderstorms in the late evening
and early morning. Rain showers and a chance of thunderstorms
after midnight. Waves 2 feet or less.
.TUESDAY...Southwest winds 15 to 20 knots. Becoming partly cloudy
early in the afternoon. Rain showers and a chance of
thunderstorms early in the morning, then showers likely in the
late morning and early afternoon. A chance of showers and
thunderstorms early in the afternoon. Waves 1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and early morning, then
increasing to 10 to 15 knots after midnight. Partly cloudy early
in the evening. Rain showers likely in the evening. A chance of
thunderstorms. Rain showers after midnight. Waves 2 feet or less.

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

$$

LHZ443-131545-
Port Sanilac to Port Huron MI-
331 AM EDT Mon Apr 13 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.TODAY...Southwest winds 20 to 25 knots becoming west 15 to
20 knots in the afternoon. Mostly cloudy with a chance of showers
in the morning, then partly cloudy in the afternoon. Waves 2 to
4 feet subsiding to 1 to 3 feet in the afternoon.
.TONIGHT...North winds 10 to 15 knots becoming east 5 to 10 knots
in the late evening and early morning, then becoming south 10 to
15 knots after midnight. Partly cloudy early in the evening, then
mostly cloudy with a chance of showers and a slight chance of
thunderstorms in the late evening and early morning. Mostly
cloudy with showers likely and a chance of thunderstorms after
midnight. Waves 2 feet or less.
.TUESDAY...Southwest winds 15 to 20 knots. Mostly cloudy until
late afternoon becoming partly cloudy. Rain showers likely and a
chance of thunderstorms until late afternoon, then a chance of
showers and thunderstorms early in the afternoon. Waves 1 to
3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Partly cloudy
until early morning. Light showers likely in the evening. A
chance of thunderstorms. Rain showers after midnight. Waves 1 to
3 feet.

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

$$

LEZ444-131545-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
331 AM EDT Mon Apr 13 2026

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

.TODAY...Southwest winds 20 to 25 knots with gusts to 30 knots
diminishing to 15 to 20 knots in the late morning and afternoon.
Mostly cloudy with a slight chance of showers in the morning,
then partly cloudy in the afternoon. Waves 2 to 4 feet subsiding
to 1 to 3 feet in the afternoon.
.TONIGHT...Southwest winds 10 to 15 knots. Partly cloudy with a
slight chance of showers and thunderstorms early in the evening,
then mostly cloudy with a chance of showers and thunderstorms in
the late evening and overnight. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots in the late morning and afternoon. Mostly cloudy with a
chance of showers until late afternoon, then partly cloudy with a
chance of showers and thunderstorms early in the afternoon. Waves
1 to 3 feet.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Light showers
and a chance of thunderstorms until early morning, then mostly
cloudy with showers likely and a chance of thunderstorms after
midnight. Waves 1 to 3 feet.

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

The water temperature at Belle Isle is 48 degrees.

$$

DRK

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