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FZUS53 KDTX 220214
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
914 PM EST Fri Nov 21 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.

LHZ422-221015-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
914 PM EST Fri Nov 21 2025

.REST OF TONIGHT...Northwest winds 10 to 15 knots. Mostly clear.
Waves 2 feet or less.
.SATURDAY...Northwest winds 5 to 10 knots becoming southwest
10 to 15 knots early in the afternoon. Mostly sunny until late
afternoon becoming mostly cloudy. Waves 2 feet or less.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots. Mostly cloudy
early in the evening becoming partly cloudy. Waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight.
.SUNDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots
early in the afternoon. 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.

$$

LHZ421-221015-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
914 PM EST Fri Nov 21 2025

.REST OF TONIGHT...Northwest winds 15 to 20 knots diminishing to
10 to 15 knots after midnight. Mostly clear. Waves 2 to 4 feet.
.SATURDAY...Northwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and early afternoon, then becoming
southwest 10 to 15 knots early in the afternoon. Mostly sunny
until late afternoon becoming mostly cloudy. Waves 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots. Mostly cloudy until
early morning becoming partly cloudy. Waves 1 to 3 feet building to 3
to 5 feet in the late evening and overnight. Waves occasionally
around 7 feet. A Small Craft Advisory may be needed.
.SUNDAY...West winds 15 to 20 knots. Partly cloudy early in the
morning becoming mostly sunny. Waves 3 to 5 feet. Waves
occasionally around 7 feet.

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

$$

LHZ441-221015-
Port Austin to Harbor Beach MI-
914 PM EST Fri Nov 21 2025

.REST OF TONIGHT...Northwest winds 15 to 20 knots diminishing to
10 to 15 knots after midnight. Partly cloudy. Waves 2 to 4 feet.
.SATURDAY...Northwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and afternoon. Partly cloudy until
late afternoon becoming mostly cloudy. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. Mostly cloudy until early
morning becoming partly cloudy. Waves 1 to 3 feet building to 3 to 5
feet in the late evening and overnight. Waves occasionally around 7
feet. A Small Craft Advisory may be needed.
.SUNDAY...Northwest winds 15 to 20 knots. Partly cloudy. Waves
3 to 5 feet. Waves occasionally around 7 feet.

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

$$

LHZ442-221015-
Harbor Beach to Port Sanilac MI-
914 PM EST Fri Nov 21 2025

.REST OF TONIGHT...Northwest winds 10 to 15 knots. Partly cloudy.
Waves 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 15 knots becoming west 5 to
10 knots in the late morning and afternoon. Partly cloudy. Waves
1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. Mostly cloudy
until early morning becoming partly cloudy. Waves 1 to 3 feet.
.SUNDAY...West winds 15 to 20 knots. Partly cloudy early in the
morning becoming mostly sunny. Waves 1 to 3 feet building to 2 to
4 feet in the late morning and afternoon.

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

$$

LHZ443-221015-
Port Sanilac to Port Huron MI-
914 PM EST Fri Nov 21 2025

.REST OF TONIGHT...Northwest winds 10 to 15 knots. Mostly cloudy
this evening becoming mostly clear. Waves 1 to 3 feet.
.SATURDAY...Northwest winds 10 to 15 knots diminishing to 5 to
10 knots in the late morning and afternoon. Mostly sunny until
late afternoon becoming partly cloudy. Waves 1 to 3 feet.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots increasing to
15 to 20 knots in the late evening and overnight. Mostly cloudy
until early morning becoming partly cloudy. Waves 1 to 3 feet.
.SUNDAY...West winds 15 to 20 knots. Mostly sunny. Waves 1 to
3 feet.

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

$$

LEZ444-221015-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
914 PM EST Fri Nov 21 2025

.REST OF TONIGHT...North winds 5 to 10 knots. Cloudy. A slight
chance of light rain this evening. Waves 2 feet or less.
.SATURDAY...North winds 5 to 10 knots until late afternoon
becoming light and variable. Sunny until late afternoon becoming
partly cloudy. Waves 2 feet or less.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots increasing to
15 to 20 knots. Partly cloudy. Waves 2 feet or less.
.SUNDAY...West winds 10 to 15 knots. Mostly sunny. Waves 2 feet
or less.

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

The water temperature at Belle Isle is 43 degrees.

$$

MR

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