502
FZUS53 KDTX 171953
NSHDTX

Nearshore Marine Forecast for Michigan
National Weather Service Detroit/Pontiac MI
353 PM EDT Thu Apr 17 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.

LHZ422-180400-
Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
353 PM EDT Thu Apr 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH
FRIDAY AFTERNOON...

.TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to
20 knots in the late evening and overnight. Partly cloudy in the
evening, then mostly cloudy with a chance of showers and a slight
chance of thunderstorms after midnight. Waves 1 to 3 feet
building to 2 to 4 feet early in the morning.
.FRIDAY...South winds 20 to 25 knots. Mostly cloudy with showers
likely and a slight chance of thunderstorms in the morning, then
partly cloudy with a chance of showers and thunderstorms in the
afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet early in
the afternoon.
.FRIDAY NIGHT...Southwest winds 20 to 25 knots. Mostly cloudy. A
chance of showers and thunderstorms in the evening, then showers
likely and a chance of thunderstorms after midnight. Waves 2 to
4 feet.
.SATURDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots in the late morning and afternoon. Mostly cloudy in the
morning becoming partly cloudy. Waves 1 to 3 feet.

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

$$

LHZ421-180400-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner
Saginaw Bay-
353 PM EDT Thu Apr 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH
FRIDAY AFTERNOON...

.TONIGHT...South winds 15 to 20 knots. Partly cloudy in the
evening, then mostly cloudy with a chance of showers and a slight
chance of thunderstorms after midnight. Waves 1 to 3 feet
building to 2 to 4 feet after midnight.
.FRIDAY...South winds 20 to 25 knots. Mostly cloudy with a chance
of showers and a slight chance of thunderstorms in the morning,
then partly cloudy with a chance of showers and thunderstorms in
the afternoon. Waves 2 to 4 feet.
.FRIDAY NIGHT...Southwest winds 20 to 25 knots. Mostly cloudy
with showers likely and a chance of thunderstorms. Waves 1 to
3 feet building to 2 to 4 feet in the late evening and overnight.
.SATURDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots in the late morning and afternoon. Mostly cloudy in the
morning 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.

$$

LHZ441-180400-
Port Austin to Harbor Beach MI-
353 PM EDT Thu Apr 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH
FRIDAY AFTERNOON...

.TONIGHT...Southeast winds 15 to 20 knots. Partly cloudy in the
evening, then mostly cloudy with a chance of showers and a slight
chance of thunderstorms after midnight. Waves 1 to 3 feet
building to 3 to 5 feet in the late evening and overnight. Waves
occasionally around 7 feet.
.FRIDAY...South winds 20 to 25 knots becoming southwest 15 to
20 knots in the late morning and afternoon. Mostly cloudy with a
chance of showers and a slight chance of thunderstorms in the
morning, then partly cloudy with a chance of showers and
thunderstorms in the afternoon. Waves 3 to 5 feet. Waves
occasionally around 7 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots. Mostly cloudy
with showers likely and a chance of thunderstorms. Waves 1 to
3 feet building to 2 to 4 feet after midnight.
.SATURDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and afternoon. Mostly cloudy. Waves
1 to 3 feet.

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

$$

LHZ442-180400-
Harbor Beach to Port Sanilac MI-
353 PM EDT Thu Apr 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH
FRIDAY AFTERNOON...

.TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to
20 knots in the late evening and overnight. Partly cloudy in the
evening, then mostly cloudy with a chance of showers and a slight
chance of thunderstorms after midnight. Waves 1 to 3 feet
building to 3 to 5 feet in the late evening and overnight. Waves
occasionally around 7 feet.
.FRIDAY...South winds 20 to 25 knots diminishing to 15 to
20 knots early in the afternoon. Mostly cloudy in the morning
becoming partly cloudy. A chance of showers and a slight chance
of thunderstorms. Waves 3 to 5 feet. Waves occasionally around
7 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots. Mostly cloudy. A
chance of showers and thunderstorms in the evening, then showers
likely and a chance of thunderstorms after midnight. Waves 1 to
3 feet.
.SATURDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and afternoon. Mostly cloudy. Waves
1 to 3 feet.

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

$$

LHZ443-180400-
Port Sanilac to Port Huron MI-
353 PM EDT Thu Apr 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT FRIDAY THROUGH
FRIDAY AFTERNOON...

.TONIGHT...South winds 10 to 15 knots increasing to 15 to
20 knots in the late evening and overnight. Mostly clear in the
evening, then mostly cloudy with a chance of showers after
midnight. Waves 1 to 3 feet building to 2 to 4 feet after
midnight.
.FRIDAY...South winds 20 to 25 knots. Mostly cloudy with a chance
of showers and a slight chance of thunderstorms in the morning,
then partly cloudy with a slight chance of showers and
thunderstorms in the afternoon. Waves 3 to 5 feet. Waves
occasionally around 7 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots increasing to
20 to 25 knots in the late evening and overnight. Mostly cloudy
with a chance of showers and thunderstorms. Waves 1 to 3 feet.
.SATURDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots in the late morning and afternoon. Mostly cloudy. Waves
1 to 3 feet.

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

$$

LEZ444-180400-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
353 PM EDT Thu Apr 17 2025

.TONIGHT...Southeast winds 10 to 15 knots becoming south 15 to
20 knots early in the morning. Mostly cloudy. A slight chance of
showers after midnight. Waves 1 to 3 feet building to 2 to 4 feet
early in the morning.
.FRIDAY...South winds 15 to 20 knots becoming southwest 20 to
25 knots early in the afternoon. Mostly cloudy with a slight
chance of showers in the morning, then mostly sunny in the
afternoon. Waves 2 to 4 feet.
.FRIDAY NIGHT...Southwest winds 15 to 20 knots. Partly cloudy
with a chance of showers in the evening, then mostly cloudy with
showers likely after midnight. Waves 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots in the late morning and afternoon. Mostly cloudy. Light
showers likely in the morning, then a chance of showers in the
afternoon. Waves 1 to 3 feet.

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

The water temperature at Belle Isle is missing.

$$

MV

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