Nearshore Marine Forecast
Issued by NWS Detroit/Pontiac, MI

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FZUS53 KDTX 050856
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
356 AM EST Fri Dec 5 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.

LHZ422-051700-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
356 AM EST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Southwest winds to 30 knots diminishing to 20 to
25 knots in the afternoon. Partly cloudy. Waves 4 to 6 feet.
Waves occasionally around 8 feet.
.TONIGHT...Southwest winds to 30 knots. Mostly cloudy. A chance
of light snow early in the evening, then a chance of light snow
and a slight chance of light freezing rain in the late evening
and overnight. Waves 4 to 6 feet. Waves occasionally around
7 feet.
.SATURDAY...West winds 15 to 20 knots. Mostly cloudy. Waves 2 to
4 feet subsiding to 1 to 3 feet in the late morning and
afternoon.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and overnight. Partly cloudy
early in the evening becoming mostly cloudy. Waves 2 feet or
less.

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

$$

LHZ421-051700-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
356 AM EST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Southwest winds to 30 knots diminishing to 20 to
25 knots late in the afternoon. Gusts to 35 knot gales. Partly
cloudy in the morning, then mostly cloudy with a slight chance of
light snow in the afternoon. Waves 5 to 7 feet. Waves
occasionally around 10 feet.
.TONIGHT...Southwest winds to 30 knots. Cloudy. A chance of light
snow early in the evening, then a chance of light snow and a
slight chance of light freezing rain in the late evening and
overnight. Waves 6 to 9 feet. Waves occasionally around 12 feet.
.SATURDAY...West winds 20 to 25 knots diminishing to 15 to
20 knots in the late morning and afternoon. Mostly cloudy. Waves
3 to 5 feet. Waves occasionally around 7 feet.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and overnight. Partly cloudy
early in the evening becoming mostly cloudy. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and overnight.

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

$$

LHZ441-051700-
Port Austin to Harbor Beach MI-
356 AM EST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Southwest winds to 30 knots diminishing to 20 to
25 knots in the afternoon. Partly cloudy in the morning, then
mostly cloudy with a slight chance of light snow in the
afternoon. Waves 4 to 6 feet. Waves occasionally around 7 feet.
.TONIGHT...Southwest winds 20 to 25 knots increasing to 30 knots
in the late evening and early morning, then diminishing to 20 to
25 knots after midnight. Cloudy. A chance of light snow early in
the evening, then a chance of light snow and a slight chance of
light freezing rain in the late evening and overnight. Waves 4 to
6 feet. Waves occasionally around 7 feet.
.SATURDAY...Southwest winds 20 to 25 knots becoming west 15 to
20 knots in the late morning and afternoon. Mostly cloudy. A
chance of light snow early in the morning. Waves 3 to 5 feet.
Waves occasionally around 7 feet.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and overnight. Mostly cloudy.
Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.

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

$$

LHZ442-051700-
Harbor Beach to Port Sanilac MI-
356 AM EST Fri Dec 5 2025

.TODAY...Southwest winds 20 to 25 knots diminishing to 15 to
20 knots in the afternoon. Partly cloudy. Waves 2 to 4 feet.
.TONIGHT...Southwest winds 20 to 25 knots. Mostly cloudy. A
chance of light snow early in the evening, then a chance of light
snow and a slight chance of light freezing rain in the late
evening and overnight. Waves 3 to 5 feet. Waves occasionally
around 7 feet.
.SATURDAY...West winds 15 to 20 knots. Mostly cloudy. A chance of
light snow early in the morning. Waves 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and overnight. Mostly cloudy.
Waves 1 to 3 feet.

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

$$

LHZ443-051700-
Port Sanilac to Port Huron MI-
356 AM EST Fri Dec 5 2025

.TODAY...Southwest winds 20 to 25 knots diminishing to 15 to
20 knots in the afternoon. Mostly sunny in the morning becoming
partly cloudy. Waves 2 to 4 feet.
.TONIGHT...Southwest winds 20 to 25 knots. Mostly cloudy. A
slight chance of light snow until early morning. A slight chance
of light freezing rain in the late evening and overnight. A
chance of light snow after midnight. Waves 3 to 5 feet. Waves
occasionally around 7 feet.
.SATURDAY...Southwest winds 15 to 20 knots veering to the west
early in the afternoon. Mostly cloudy. Waves 1 to 3 feet.
.SATURDAY NIGHT...Northwest winds 10 to 15 knots diminishing to
5 to 10 knots in the late evening and overnight. Mostly cloudy.
Waves 2 feet or less.

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

$$

LEZ444-051700-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
356 AM EST Fri Dec 5 2025

.TODAY...Southwest winds 10 to 15 knots. Partly cloudy. Waves
2 feet or less.
.TONIGHT...Southwest winds 15 to 20 knots increasing to 20 to
25 knots in the late evening and early morning, then diminishing
to 15 to 20 knots after midnight. Partly cloudy early in the
evening becoming mostly cloudy. Waves 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots early in the afternoon. Mostly cloudy becoming partly
cloudy in the late morning and early afternoon becoming mostly
cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and afternoon.
.SATURDAY NIGHT...West winds 5 to 10 knots until early morning
becoming light and variable. Mostly cloudy. Waves 2 feet or less.

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

The water temperature at Belle Isle is 35 degrees.

$$

AM

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a www.weather.gov/greatlakes