471
FZUS53 KDTX 152020
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
320 PM EST Mon Dec 15 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.

LHZ422-160430-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
320 PM EST Mon Dec 15 2025

...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...Southwest winds 15 to 20 knots diminishing to 5 to
10 knots. Mostly cloudy in the evening becoming partly cloudy.
.TUESDAY...Southwest winds 10 to 15 knots increasing to 20 to
25 knots with gusts to 30 knots. Mostly cloudy until late
afternoon becoming partly cloudy.
.TUESDAY NIGHT...Southwest winds to 30 knots with gusts to
40 knot gales. Mostly cloudy.
.WEDNESDAY...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 10 to 15 knots. Mostly cloudy becoming partly
cloudy in the late morning and early afternoon becoming mostly
sunny.

Waves omitted due to ice coverage.

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

$$

LHZ421-160430-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
320 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING...
...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...Southwest winds 20 to 25 knots becoming west 10 to
15 knots. Mostly cloudy in the evening becoming partly cloudy.
Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves
occasionally around 7 feet.
.TUESDAY...Southwest winds 15 to 20 knots increasing to 30 knots
with gusts to 35 knot gales. Mostly cloudy. Waves 2 to 4 feet
building to 4 to 6 feet in the late morning and afternoon. Waves
occasionally around 8 feet.
.TUESDAY NIGHT...Southwest gales to 35 knot gales with gusts to
40 knot gales. Mostly cloudy. Waves 8 to 12 feet. Waves
occasionally around 15 feet.
.WEDNESDAY...West winds to 30 knots diminishing to 10 to
15 knots. Mostly cloudy becoming partly cloudy in the late
morning and early afternoon becoming mostly sunny. Waves 6 to
9 feet subsiding to 2 to 4 feet. Waves occasionally around
12 feet.

Wave heights are for ice free areas.

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

$$

LHZ441-160430-
Port Austin to Harbor Beach MI-
320 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EST THIS EVENING...
...GALE WARNING IN EFFECT FROM TUESDAY AFTERNOON THROUGH LATE
TUESDAY NIGHT...

.TONIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Mostly cloudy. Waves 3 to 5 feet
subsiding to 1 to 3 feet after midnight. Waves occasionally
around 7 feet.
.TUESDAY...Southwest winds 15 to 20 knots increasing to 30 knots.
Partly cloudy becoming mostly cloudy in the late morning and
early afternoon becoming partly cloudy. Waves 1 to 3 feet
building to 3 to 5 feet in the late morning and afternoon. Waves
occasionally around 7 feet.
.TUESDAY NIGHT...Southwest gales to 35 knot gales diminishing to
30 knots after midnight. Mostly cloudy. Waves 6 to 9 feet. Waves
occasionally around 12 feet.
.WEDNESDAY...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 10 to 15 knots early in the afternoon. Mostly
cloudy becoming partly cloudy in the late morning and early
afternoon becoming mostly sunny. Waves 5 to 7 feet subsiding to
2 to 4 feet early in the afternoon. Waves occasionally around
10 feet.

Wave heights are for ice free areas.

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

$$

LHZ442-160430-
Harbor Beach to Port Sanilac MI-
320 PM EST Mon Dec 15 2025

.TONIGHT...Southwest winds 15 to 20 knots becoming west 10 to
15 knots after midnight. Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming south 20 to
25 knots with gusts to 30 knots. Partly cloudy becoming mostly
cloudy in the late morning and early afternoon becoming partly
cloudy. Waves 1 to 3 feet building to 2 to 4 feet in the late
morning and afternoon.
.TUESDAY NIGHT...Southwest winds 20 to 25 knots with gusts to
30 knots. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally
around 7 feet.
.WEDNESDAY...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 10 to 15 knots. Mostly cloudy becoming partly
cloudy in the late morning and early afternoon becoming mostly
sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and afternoon.

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

$$

LHZ443-160430-
Port Sanilac to Port Huron MI-
320 PM EST Mon Dec 15 2025

.TONIGHT...Southwest winds 15 to 20 knots diminishing to 10 to
15 knots after midnight. Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...Southwest winds 10 to 15 knots becoming south 20 to
25 knots with gusts to 30 knots. Partly cloudy becoming mostly
cloudy in the late morning and early afternoon becoming partly
cloudy. Waves 1 to 3 feet building to 2 to 4 feet in the late
morning and afternoon.
.TUESDAY NIGHT...Southwest winds to 30 knots diminishing to 20 to
25 knots in the late evening and overnight. Partly cloudy early
in the evening becoming mostly cloudy. Waves 3 to 5 feet. Waves
occasionally around 7 feet.
.WEDNESDAY...West winds 20 to 25 knots diminishing to 10 to
15 knots. Mostly cloudy until late afternoon becoming partly
cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late
morning and afternoon.

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

$$

LEZ444-160430-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
320 PM EST Mon Dec 15 2025

.TONIGHT...Southwest winds 15 to 20 knots diminishing to 5 to
10 knots. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight.
.TUESDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots early in the afternoon. Partly cloudy early in the
morning becoming mostly sunny. Waves 1 to 3 feet building to 2 to
4 feet early in the afternoon.
.TUESDAY NIGHT...Southwest winds 20 to 25 knots with gusts to
30 knots. Partly cloudy until early morning becoming mostly
cloudy. Waves 3 to 5 feet. Waves occasionally around 7 feet.
.WEDNESDAY...Southwest winds 20 to 25 knots with gusts to
30 knots becoming west 5 to 10 knots. Mostly cloudy until late
afternoon becoming partly cloudy. Waves 2 to 4 feet subsiding to
1 to 3 feet in the late morning and afternoon.

Wave heights are for ice free areas.

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

The water temperature at Belle Isle is 32 degrees.

$$

MANN

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