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FZUS53 KAPX 181430
NSHAPX

Nearshore Marine Forecast
National Weather Service Gaylord MI
1030 AM EDT Tue Aug 18 2026

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.

LSZ321-182230-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
1030 AM EDT Tue Aug 18 2026

.TODAY...Northwest wind 10 to 15 knots. Chance of showers in the
late morning. Slight chance of thunderstorms through the day.
Slight chance of showers in the afternoon. Waves 2 to 3 feet.
.TONIGHT...West wind 5 to 10 knots. Partly cloudy. Waves 2 feet
or less.
.WEDNESDAY...Northwest wind 5 to 10 knots. Sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LSZ322-182230-
St. Marys River Point Iroquois to E. Potagannissing Bay-
1030 AM EDT Tue Aug 18 2026

.TODAY...Northwest wind 10 to 15 knots. Slight chance of
thunderstorms in the late morning. Chance of showers through the
day. Chance of thunderstorms in the afternoon.
.TONIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
.WEDNESDAY...Northwest wind 5 to 10 knots. Sunny.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear.

Winds higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ341-182230-
Seul Choix Point to 5NM West of Mackinac Bridge-
1030 AM EDT Tue Aug 18 2026

.TODAY...Northwest wind 10 to 15 knots. Slight chance of showers
and thunderstorms in the late morning, then chance of showers and
thunderstorms in the afternoon. Waves 2 to 3 feet.
.TONIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
2 feet or less.
.WEDNESDAY...Northwest wind 10 to 15 knots. Sunny. Waves 2 feet
or less.
.WEDNESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly clear.
Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ342-182230-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-
1030 AM EDT Tue Aug 18 2026

.TODAY...West wind 10 to 15 knots. Slight chance of showers and
thunderstorms in the late morning, then chance of showers and
thunderstorms in the afternoon. Waves 2 to 3 feet.
.TONIGHT...Northwest wind 5 to 10 knots. Chance of showers and
slight chance of thunderstorms. Waves 2 feet or less.
.WEDNESDAY...West wind 10 to 15 knots. Sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...East wind 5 to 10 knots. Mostly clear. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ323-182230-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-
1030 AM EDT Tue Aug 18 2026

.TODAY...West wind 10 to 15 knots. Slight chance of showers in
the late morning, then showers likely and a chance of
thunderstorms in the afternoon. Waves 2 feet or less.
.TONIGHT...North wind 5 to 10 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.WEDNESDAY...Northwest wind 5 to 10 knots. Sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or
less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ344-345-182230-
Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
1030 AM EDT Tue Aug 18 2026

.TODAY...West wind 10 to 15 knots. Slight chance of showers in
the late morning, then chance of showers and thunderstorms in the
afternoon. Waves 2 feet or less.
.TONIGHT...North wind 5 to 10 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.WEDNESDAY...West wind 5 to 10 knots. Sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or
less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LMZ346-182230-
Manistee to Point Betsie MI-
1030 AM EDT Tue Aug 18 2026

.TODAY...Southwest wind 5 to 10 knots rising to 10 to 15 knots in
the afternoon. Slight chance of showers in the late morning, then
chance of showers and thunderstorms in the afternoon. Waves 2 to
3 feet.
.TONIGHT...North wind 5 to 10 knots. Chance of showers and
thunderstorms. Waves 2 to 3 feet.
.WEDNESDAY...Light winds. Sunny. Waves 2 feet or less.
.WEDNESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or
less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ345-182230-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-
1030 AM EDT Tue Aug 18 2026

.TODAY...Southwest wind 10 to 15 knots becoming northwest early
in the evening. Slight chance of showers and thunderstorms in the
late morning, then showers likely and a chance of thunderstorms
in the afternoon. Waves 2 feet or less.
.TONIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
2 feet or less.
.WEDNESDAY...West wind 10 to 15 knots. Sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ346-182230-
St Ignace to False Detour Channel-
1030 AM EDT Tue Aug 18 2026

.TODAY...West wind 10 to 15 knots becoming northwest early in the
evening. Slight chance of thunderstorms in the late morning.
Chance of showers through the day. Chance of thunderstorms in the
afternoon. Waves 2 to 3 feet.
.TONIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves
2 feet or less.
.WEDNESDAY...Northwest wind 10 to 15 knots. Sunny. Waves 2 feet
or less.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear.
Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ347-182230-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
1030 AM EDT Tue Aug 18 2026

.TODAY...West wind 10 to 15 knots becoming northwest early in the
evening. Slight chance of showers and thunderstorms in the late
morning, then chance of showers and thunderstorms in the
afternoon. Waves 2 feet or less.
.TONIGHT...Northwest wind 5 to 10 knots. Chance of showers and
slight chance of thunderstorms. Waves 2 feet or less.
.WEDNESDAY...Northwest wind 10 to 15 knots. Sunny. Waves 2 feet
or less.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear.
Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ348-182230-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-
1030 AM EDT Tue Aug 18 2026

.TODAY...Southwest wind 5 to 10 knots becoming west early in the
evening. Slight chance of showers in the late morning, then
chance of showers and thunderstorms in the afternoon. Waves
2 feet or less.
.TONIGHT...Northwest wind 5 to 10 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.WEDNESDAY...Northwest wind 10 to 15 knots. Sunny. Waves 2 feet
or less.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear.
Waves 2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

LHZ349-182230-
Sturgeon Pt to Alabaster MI-
1030 AM EDT Tue Aug 18 2026

.TODAY...Southwest wind 10 to 15 knots. Showers likely and a
chance of thunderstorms in the afternoon. Waves 2 to 3 feet.
.TONIGHT...Northwest wind 5 to 10 knots. Chance of showers and
thunderstorms. Waves 2 feet or less.
.WEDNESDAY...North wind 5 to 10 knots. Sunny. Waves 2 feet or
less.
.WEDNESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves
2 feet or less.

Winds and waves higher in the vicinity of thunderstorms.

See the open lakes forecast for days 3 through 5.

$$

SJC