991
FZUS53 KDTX 200841
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
341 AM EST Thu Nov 20 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.

LHZ422-201645-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
341 AM EST Thu Nov 20 2025

.TODAY...South winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. Partly cloudy in the morning becoming mostly
cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Cloudy. A slight
chance of light rain until early morning. Waves 1 to 3 feet.
.FRIDAY...West winds 10 to 15 knots. Partly cloudy early in the
morning then clearing. Waves 2 feet or less.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots. Mostly clear.
Waves 2 feet or less.

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

$$

LHZ421-201645-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
341 AM EST Thu Nov 20 2025

.TODAY...Southwest winds 5 to 10 knots becoming south 10 to
15 knots in the late morning and afternoon. Mostly sunny in the
morning becoming mostly cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 15 to 20 knots. Cloudy. A slight
chance of light rain until early morning. Waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight.
.FRIDAY...West winds 10 to 15 knots. Partly cloudy early in the
morning then clearing. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots becoming north
10 to 15 knots after midnight. Mostly clear. Waves 2 to 4 feet.

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

$$

LHZ441-201645-
Port Austin to Harbor Beach MI-
341 AM EST Thu Nov 20 2025

.TODAY...Southwest winds 5 to 10 knots becoming south 10 to
15 knots in the afternoon. Mostly sunny in the morning becoming
mostly cloudy. Waves 2 feet or less.
.TONIGHT...South winds 10 to 15 knots becoming southwest 15 to
20 knots in the late evening and overnight. Cloudy with a slight
chance of light rain. Waves 1 to 3 feet.
.FRIDAY...West winds 10 to 15 knots. Partly cloudy early in the
morning becoming mostly sunny. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 15 to 20 knots becoming north
10 to 15 knots after midnight. Partly cloudy. Waves 2 to 4 feet.

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

$$

LHZ442-201645-
Harbor Beach to Port Sanilac MI-
341 AM EST Thu Nov 20 2025

.TODAY...Southwest winds 5 to 10 knots becoming south 10 to
15 knots in the afternoon. Mostly sunny in the morning becoming
mostly cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Cloudy with a slight
chance of light rain. Waves 1 to 3 feet.
.FRIDAY...West winds 10 to 15 knots. Partly cloudy until late
afternoon becoming mostly sunny. Waves 2 feet or less.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots. Partly cloudy.
Waves 1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.

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

$$

LHZ443-201645-
Port Sanilac to Port Huron MI-
341 AM EST Thu Nov 20 2025

.TODAY...South winds 5 to 10 knots increasing to 10 to 15 knots
in the afternoon. Partly cloudy in the morning becoming mostly
cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 10 to 15 knots. Cloudy with a slight
chance of light rain. Waves 2 feet or less.
.FRIDAY...West winds 10 to 15 knots. Mostly cloudy early in the
morning becoming partly cloudy. Waves 2 feet or less.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots. Partly cloudy.
Waves 1 to 3 feet.

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

$$

LEZ444-201645-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
341 AM EST Thu Nov 20 2025

.TODAY...Light and variable winds becoming south 5 to 10 knots in
the afternoon. Mostly cloudy. Waves 2 feet or less.
.TONIGHT...Southwest winds 5 to 10 knots. Mostly cloudy. A slight
chance of light rain after midnight. Waves 2 feet or less.
.FRIDAY...West winds 5 to 10 knots. Mostly cloudy. Waves 2 feet
or less.
.FRIDAY NIGHT...North winds 5 to 10 knots increasing to 10 to
15 knots after midnight. Mostly cloudy until early morning
becoming partly cloudy. Waves 2 feet or less.

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

The water temperature at Belle Isle is 42 degrees.

$$

DRK

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