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FZUS53 KAPX 220240
NSHAPX

Nearshore Marine Forecast
National Weather Service Gaylord MI
1040 PM EDT Thu Aug 21 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.

LSZ321-221045-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...South wind 5 to 10 knots. Partly cloudy early in the
evening then becoming mostly cloudy. Waves 2 feet or less.
.FRIDAY...South wind 5 to 10 knots. Scattered showers. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots. Scattered showers
and thunderstorms. Waves 2 feet or less.
.SATURDAY...West wind 10 to 15 knots. Mostly sunny. Waves 2 to
3 feet.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LSZ322-221045-
St. Marys River Point Iroquois to E. Potagannissing Bay-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Partly cloudy early in the evening then
becoming mostly cloudy.
.FRIDAY...Southwest wind 5 to 10 knots. Mostly sunny.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots. Scattered showers
and thunderstorms.
.SATURDAY...West wind 10 to 15 knots. Scattered showers.

Winds higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ346-221045-
St Ignace to False Detour Channel-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Southwest wind 5 to 10 knots. Partly cloudy. Waves
2 feet or less.
.FRIDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots. Scattered showers
and thunderstorms. Waves 2 feet or less.
.SATURDAY...West wind 10 to 15 knots. Scattered showers. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ341-221045-
Seul Choix Point to 5NM West of Mackinac Bridge-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Southwest wind 5 to 10 knots. Partly cloudy early in
the evening then becoming mostly cloudy. Waves 2 feet or less.
.FRIDAY...Southwest wind 10 to 15 knots. Mostly sunny. Waves 2 to
3 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Scattered showers
and thunderstorms. Waves 2 to 3 feet.
.SATURDAY...West wind 10 to 15 knots. Scattered showers. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ342-221045-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Southwest wind 5 to 10 knots. Partly cloudy. Waves
2 feet or less.
.FRIDAY...Southwest wind 10 to 15 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Scattered showers
and thunderstorms. Waves 2 feet or less.
.SATURDAY...West wind 10 to 15 knots. Scattered showers. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ323-221045-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Partly cloudy. Waves 2 feet or less.
.FRIDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots. Scattered showers
and thunderstorms. Waves 2 feet or less.
.SATURDAY...West wind 5 to 10 knots. Scattered showers. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ344-345-221045-
Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Partly cloudy. Waves 2 feet or less.
.FRIDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Mostly cloudy.
Waves 2 feet or less.
.SATURDAY...West wind 5 to 10 knots. Scattered showers. Waves
2 feet or less.

See the open lakes forecast for days 3 through 5.

$$

LMZ346-221045-
Manistee to Point Betsie MI-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Mostly clear. Waves 2 feet or less.
.FRIDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Scattered showers.
Waves 2 feet or less.
.SATURDAY...West wind 10 to 15 knots. Scattered showers. Waves
2 feet or less.

See the open lakes forecast for days 3 through 5.

$$

LHZ345-221045-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...South wind 5 to 10 knots. Partly cloudy. Waves
2 feet or less.
.FRIDAY...Southwest wind 10 to 15 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Scattered showers
and thunderstorms. Waves 2 feet or less.
.SATURDAY...West wind 10 to 15 knots. Scattered showers. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ347-221045-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Partly cloudy. Waves 2 feet or less.
.FRIDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots. Scattered showers.
Waves 2 feet or less.
.SATURDAY...West wind 10 to 15 knots. Scattered showers and
thunderstorms. Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ348-221045-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Partly cloudy. Waves 2 feet or less.
.FRIDAY...South wind 10 to 15 knots. Mostly sunny. Waves 2 feet
or less.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Mostly cloudy.
Waves 2 feet or less.
.SATURDAY...Southwest wind 5 to 10 knots. Scattered showers and
thunderstorms. Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ349-221045-
Sturgeon Pt to Alabaster MI-
1040 PM EDT Thu Aug 21 2025

.OVERNIGHT...Light winds. Partly cloudy. Waves 2 feet or less.
.FRIDAY...South wind 10 to 15 knots. Mostly sunny. Waves 2 feet
or less.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy.
Waves 2 feet or less.
.SATURDAY...Southwest wind 10 to 15 knots. Scattered showers and
thunderstorms. Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

NSC