FZUS53 KAPX 212012
NSHAPX

Nearshore Marine Forecast
National Weather Service Gaylord MI
412 PM EDT Thu May 21 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.

LSZ321-220415-
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI-
412 PM EDT Thu May 21 2026

.THROUGH EARLY EVENING...Northeast wind 5 to 10 knots. Sunny.
Waves 2 feet or less.
.TONIGHT...Southeast wind 5 to 10 knots. Partly cloudy. Waves
2 feet or less.
.FRIDAY...Southeast wind 10 to 15 knots. Mostly sunny. Waves
2 feet or less.
.FRIDAY NIGHT...Southeast wind 15 to 20 knots. Partly cloudy.
Waves 2 to 3 feet.
.SATURDAY...Southeast wind 10 to 20 knots. Chance of showers.
Waves 2 to 4 feet.

See the open lakes forecast for days 3 through 5.

$$

LSZ322-220415-
St. Marys River Point Iroquois to E. Potagannissing Bay-
412 PM EDT Thu May 21 2026

.THROUGH EARLY EVENING...South wind 5 to 10 knots. Sunny.
.TONIGHT...Southeast wind 5 to 10 knots. Mostly clear.
.FRIDAY...Southeast wind 10 to 15 knots. Mostly sunny.
.FRIDAY NIGHT...East wind 10 to 15 knots. Partly cloudy.
.SATURDAY...Southeast wind 10 to 20 knots. Chance of showers.

See the open lakes forecast for days 3 through 5.

$$

LMZ341-220415-
Seul Choix Point to 5NM West of Mackinac Bridge-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY EVENING...

.THROUGH EARLY EVENING...East wind 10 to 15 knots. Sunny. Waves
2 feet or less.
.TONIGHT...East wind 10 to 15 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 15 to 20 knots. Mostly sunny. Waves 3 to
5 feet.
.FRIDAY NIGHT...East wind 10 to 20 knots. Mostly cloudy. Waves
2 to 4 feet.
.SATURDAY...East wind 10 to 20 knots. Chance of showers. Waves
3 to 5 feet.

See the open lakes forecast for days 3 through 5.

$$

LMZ342-220415-
Norwood MI to 5NM West of Mackinac Bridge including Little
Traverse Bay-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY EVENING...

.THROUGH EARLY EVENING...Northeast wind 10 to 15 knots. Mostly
sunny. Waves 2 feet or less.
.TONIGHT...East wind 10 to 15 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 15 to 20 knots. Mostly sunny. Waves 2 to
4 feet.
.FRIDAY NIGHT...East wind 10 to 20 knots. Mostly cloudy. Waves
2 to 4 feet.
.SATURDAY...East wind 10 to 20 knots. Chance of showers. Waves
2 to 4 feet.

See the open lakes forecast for days 3 through 5.

$$

LMZ323-220415-
Grand Traverse Bay south of a line Grand Traverse Light to
Norwood MI-
412 PM EDT Thu May 21 2026

.THROUGH EARLY EVENING...Northeast wind 10 to 15 knots. Mostly
sunny. Waves 2 feet or less.
.TONIGHT...East wind 5 to 10 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 10 to 15 knots. Partly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...East wind 10 to 15 knots. Mostly cloudy. Waves
2 feet or less.
.SATURDAY...Southeast wind 5 to 10 knots. Chance of showers.
Waves 2 feet or less.

See the open lakes forecast for days 3 through 5.

$$

LMZ344-345-220415-
Sleeping Bear Point to Grand Traverse Light MI-
Point Betsie to Sleeping Bear Point MI-
412 PM EDT Thu May 21 2026

.THROUGH EARLY EVENING...North wind 10 to 15 knots. Mostly sunny.
Waves 2 feet or less.
.TONIGHT...East wind 10 to 15 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 10 to 15 knots. Partly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...East wind 10 to 15 knots. Mostly cloudy. Waves
2 feet or less.
.SATURDAY...East wind 10 to 15 knots. Chance of showers. Waves
2 feet or less.

See the open lakes forecast for days 3 through 5.

$$

LMZ346-220415-
Manistee to Point Betsie MI-
412 PM EDT Thu May 21 2026

.THROUGH EARLY EVENING...North wind 10 to 15 knots. Partly sunny.
Waves 2 feet or less.
.TONIGHT...East wind 10 to 15 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 10 to 15 knots. Partly sunny. Waves 2 feet or
less.
.FRIDAY NIGHT...East wind 10 to 15 knots. Chance of showers.
Waves 2 feet or less.
.SATURDAY...East wind 5 to 10 knots. Chance of showers. Waves
2 feet or less.

See the open lakes forecast for days 3 through 5.

$$

LHZ345-220415-
Straits of Mackinac within 5 nm of Mackinac Bridge including
Mackinac Island-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
SATURDAY EVENING...

.THROUGH EARLY EVENING...East wind 10 to 15 knots. Mostly sunny.
Waves 2 feet or less.
.TONIGHT...East wind 5 to 10 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 10 to 20 knots. Mostly sunny. Waves 2 to
4 feet.
.FRIDAY NIGHT...East wind 10 to 20 knots. Partly cloudy. Waves
4 to 6 feet.
.SATURDAY...East wind 15 to 25 knots. Chance of showers. Waves
4 to 7 feet.

See the open lakes forecast for days 3 through 5.

$$

LHZ346-220415-
St Ignace to False Detour Channel-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.THROUGH EARLY EVENING...Southeast wind 5 to 10 knots. Mostly
sunny. Waves 2 feet or less.
.TONIGHT...East wind 5 to 10 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 15 to 20 knots. Mostly sunny. Waves 2 to
4 feet.
.FRIDAY NIGHT...East wind 15 to 20 knots. Partly cloudy. Waves
4 to 7 feet.
.SATURDAY...East wind 15 to 25 knots. Chance of showers. Waves
6 to 9 feet.

See the open lakes forecast for days 3 through 5.

$$

LHZ347-220415-
5NM East of Mackinac Bridge to Presque Isle Light MI including
Bois Blanc Island-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.THROUGH EARLY EVENING...East wind 10 to 15 knots. Mostly sunny.
Waves 2 feet or less.
.TONIGHT...East wind 5 to 10 knots. Partly cloudy. Waves 2 feet
or less.
.FRIDAY...East wind 10 to 15 knots. Mostly sunny. Waves 2 to
4 feet.
.FRIDAY NIGHT...East wind 10 to 20 knots. Mostly cloudy. Waves
4 to 7 feet.
.SATURDAY...East wind 15 to 25 knots. Chance of showers. Waves
7 to 10 feet.

See the open lakes forecast for days 3 through 5.

$$

LHZ348-220415-
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay
National Marine Sanctuary-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.THROUGH EARLY EVENING...Northeast wind 5 to 10 knots. Mostly
sunny. Waves 2 feet or less.
.TONIGHT...Northeast wind 10 to 15 knots. Partly cloudy. Waves
2 feet or less.
.FRIDAY...East wind 10 to 15 knots. Partly sunny. Waves 2 to
4 feet.
.FRIDAY NIGHT...East wind 10 to 20 knots. Mostly cloudy. Waves
4 to 7 feet.
.SATURDAY...East wind 10 to 20 knots. Rain showers likely. Waves
6 to 9 feet.

See the open lakes forecast for days 3 through 5.

$$

LHZ349-220415-
Sturgeon Pt to Alabaster MI-
412 PM EDT Thu May 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY AFTERNOON THROUGH
LATE SATURDAY NIGHT...

.THROUGH EARLY EVENING...Northeast wind 10 to 15 knots. Partly
sunny. Waves 2 to 3 feet.
.TONIGHT...Northeast wind 10 to 15 knots. Partly cloudy. Waves
2 feet or less.
.FRIDAY...East wind 10 to 15 knots. Partly sunny. Waves 2 to
4 feet.
.FRIDAY NIGHT...East wind 10 to 20 knots. Chance of showers.
Waves 3 to 5 feet.
.SATURDAY...East wind 10 to 15 knots. Rain showers likely. Waves
4 to 7 feet.

See the open lakes forecast for days 3 through 5.

$$

FEF