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FZUS53 KAPX 180619
NSHAPX

Nearshore Marine Forecast
National Weather Service Gaylord MI
219 AM EDT Mon Aug 18 2025

For waters within five nautical miles of shore on Lakes Huron...
Michigan and Superior.

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.

LSZ321-181430-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE
TONIGHT...

.TODAY...Southeast wind 10 to 15 knots. Slight chance of showers
in the afternoon. Waves 2 to 3 feet.
.TONIGHT...Southeast wind 10 to 20 knots. Showers likely and a
chance of thunderstorms. Waves 2 to 3 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Chance of showers.
Waves 2 feet or less.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LSZ322-181430-
St. Marys River Point Iroquois to E. Potagannissing Bay-
219 AM EDT Mon Aug 18 2025

.TODAY...Southeast wind 10 to 15 knots. Mostly sunny early in the
morning then becoming partly sunny.
.TONIGHT...Southeast wind 10 to 15 knots. Chance of showers and
thunderstorms.
.TUESDAY...Southeast wind 10 to 15 knots. Chance of showers.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy.

Winds higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ346-181430-
St Ignace to False Detour Channel-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...Southeast wind 10 to 20 knots. Mostly sunny early in the
morning then becoming partly sunny. Waves 2 to 4 feet building to
3 to 5 feet in the afternoon.
.TONIGHT...Southeast wind 10 to 20 knots. Showers likely and a
chance of thunderstorms. Waves 4 to 6 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Chance of showers.
Waves 3 to 5 feet.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 to 3 feet.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ341-181430-
Seul Choix Point to 5NM West of Mackinac Bridge-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
LATE TONIGHT...

.TODAY...Southeast wind 10 to 20 knots. Slight chance of showers
in the afternoon. Waves 2 to 3 feet.
.TONIGHT...Southeast wind 10 to 20 knots. Chance of showers and
thunderstorms. Waves 2 to 4 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Mostly cloudy. Waves
2 feet or less.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ342-181430-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
LATE TONIGHT...

.TODAY...Southeast wind 10 to 20 knots. Mostly sunny early in the
morning then becoming mostly cloudy. Waves 2 feet or less
building to 2 to 3 feet in the afternoon.
.TONIGHT...Southeast wind 15 to 20 knots. Chance of showers and
thunderstorms. Waves 2 to 3 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Chance of showers.
Waves 2 feet or less.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ323-181430-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-
219 AM EDT Mon Aug 18 2025

.TODAY...Southeast wind 10 to 20 knots decreasing to 5 to
10 knots in the afternoon. Mostly sunny early in the morning then
becoming partly sunny. Waves 2 feet or less.
.TONIGHT...Southeast wind 10 to 15 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.TUESDAY...South wind 5 to 10 knots. Chance of showers. Waves
2 feet or less.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ344-345-181430-
Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
219 AM EDT Mon Aug 18 2025

.TODAY...Southeast wind 10 to 15 knots becoming east 5 to
10 knots early in the evening. Mostly cloudy then becoming mostly
sunny in the morning then becoming mostly cloudy. Waves 2 feet or
less.
.TONIGHT...Southeast wind 10 to 15 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.TUESDAY...North wind 10 to 15 knots. Mostly cloudy. Waves 2 feet
or less.
.TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ346-181430-
Manistee to Point Betsie MI-
219 AM EDT Mon Aug 18 2025

.TODAY...Southeast wind 10 to 15 knots. Slight chance of showers
in the afternoon. Waves 2 feet or less.
.TONIGHT...Southeast wind 10 to 15 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.TUESDAY...West wind 5 to 10 knots. Mostly cloudy. Waves 2 feet
or less.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ345-181430-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...Southeast wind 15 to 20 knots. Mostly sunny early in the
morning then becoming partly sunny. Waves 2 to 4 feet building to
3 to 5 feet in the afternoon.
.TONIGHT...Southeast wind 10 to 20 knots. Showers likely and a
chance of thunderstorms. Waves 3 to 5 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Chance of showers.
Waves 2 feet or less.
.TUESDAY NIGHT...North wind 5 to 10 knots. Mostly cloudy. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ347-181430-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...Southeast wind 15 to 20 knots. Mostly sunny early in the
morning then becoming partly sunny. Waves 3 to 5 feet.
.TONIGHT...Southeast wind 15 to 20 knots. Showers likely and a
chance of thunderstorms. Waves 3 to 5 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Showers likely and a
chance of thunderstorms. Waves 2 to 4 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves
2 to 3 feet.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ348-181430-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.TODAY...Southeast wind 15 to 20 knots. Partly cloudy. Waves 2 to
4 feet.
.TONIGHT...Southeast wind 10 to 15 knots. Chance of thunderstorms
and slight chance of showers. Waves 3 to 5 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Chance of showers and
thunderstorms. Waves 3 to 5 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Chance of showers.
Waves 2 to 3 feet.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ349-181430-
Sturgeon Pt to Alabaster MI-
219 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.TODAY...Southeast wind 15 to 20 knots. Partly cloudy. Waves 3 to
5 feet subsiding to 2 to 3 feet in the afternoon.
.TONIGHT...Southeast wind 10 to 15 knots. Chance of showers and
slight chance of thunderstorms. Waves 2 to 4 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Showers likely and a
chance of thunderstorms. Waves 2 to 4 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves
2 to 3 feet.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

NSC