National Weather Service Marine Forecast FZUS53 KAPX

FZUS53 KAPX 202004
NSHAPX

Nearshore Marine Forecast
National Weather Service Gaylord MI
404 PM EDT Tue May 20 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.

LSZ321-210415
Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 20 knots and gusty. Mostly sunny. Waves 2 feet or less.

TONIGHT
East wind 10 to 15 knots. Partly cloudy. Waves 2 feet or less.

WEDNESDAY
Northeast wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.

WEDNESDAY NIGHT
North wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.

THURSDAY
North wind 10 to 15 knots. Chance of showers. Waves 2 to 3 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LSZ322-210415
St. Marys River Point Iroquois to E. Potagannissing Bay
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 15 knots with gusts to around 30 knots. Mostly sunny.

TONIGHT
East wind 10 to 15 knots. Mostly cloudy.

WEDNESDAY
East wind 10 to 15 knots. Mostly cloudy.

WEDNESDAY NIGHT
Northeast wind 5 to 10 knots with gusts to around 25 knots. Mostly cloudy.

THURSDAY
North wind 10 to 15 knots. Chance of showers.

See the open lakes forecast for days 3 through 5.

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LHZ346-210415
St Ignace to False Detour Channel
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 15 to 20 knots and gusty. Mostly sunny. Waves 2 to 3 feet.

TONIGHT
East wind 15 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.

THURSDAY
North wind 10 to 15 knots. Chance of showers. Waves 2 feet or less.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LMZ341-210415
Seul Choix Point to 5NM West of Mackinac Bridge
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 20 knots. Partly sunny. Waves 3 to 5 feet.

TONIGHT
East wind 15 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.

THURSDAY
North wind 10 to 15 knots. Partly sunny. Waves 2 feet or less.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LMZ342-210415
Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 20 knots with gusts to around 30 knots. Mostly cloudy. Waves 2 to 4 feet.

TONIGHT
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet.

WEDNESDAY
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet.

THURSDAY
North wind 10 to 15 knots. Partly sunny. Waves 2 to 3 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LMZ323-210415
Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 15 knots with gusts to around 30 knots. Mostly cloudy. Waves 2 feet or less.

TONIGHT
East wind 10 to 15 knots. Isolated showers. Waves 2 feet or less.

WEDNESDAY
Northeast wind 10 to 15 knots with gusts to around 30 knots. Mostly cloudy. Waves 2 feet or less.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet.

THURSDAY
North wind 10 to 15 knots. Partly sunny. Waves 2 to 3 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LMZ344-210415
Sleeping Bear Point to Grand Traverse Light MI
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 15 knots with gusts to around 30 knots. Mostly cloudy. Waves 2 to 4 feet.

TONIGHT
East wind 10 to 15 knots. Isolated showers. Waves 2 to 3 feet.

WEDNESDAY
Northeast wind 10 to 15 knots with gusts to around 30 knots. Mostly cloudy. Waves 2 to 3 feet.

WEDNESDAY NIGHT
North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet.

THURSDAY
North wind 10 to 15 knots. Partly sunny. Waves 2 to 3 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LMZ345-346-210415
Point Betsie to Sleeping Bear Point MI
Manistee to Point Betsie MI
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 20 knots and gusty. Chance of showers. Waves 2 feet or less.

TONIGHT
East wind 10 to 15 knots. Scattered showers. Waves 2 feet or less.

WEDNESDAY
Northeast wind 10 to 15 knots. Chance of showers. Waves 2 to 3 feet.

WEDNESDAY NIGHT
North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet.

THURSDAY
North wind 15 to 20 knots. Partly sunny. Waves 2 to 4 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LHZ345-210415
Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 20 knots and gusty. Partly sunny. Waves 2 to 3 feet.

TONIGHT
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less.

THURSDAY
North wind 10 to 15 knots. Chance of showers. Waves 2 feet or less.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LHZ347-210415
5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 15 knots with gusts to around 30 knots. Partly sunny. Waves 2 to 3 feet.

TONIGHT
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY NIGHT
Northeast wind 10 to 15 knots with gusts to around 30 knots. Chance of showers. Waves 2 to 3 feet.

THURSDAY
North wind 10 to 15 knots. Chance of showers. Waves 2 to 3 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LHZ348-210415
Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
East wind 10 to 15 knots. Partly sunny. Waves 2 to 3 feet.

TONIGHT
East wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet.

WEDNESDAY
Northeast wind 10 to 20 knots. Mostly cloudy. Waves 3 to 5 feet.

WEDNESDAY NIGHT
Northeast wind 10 to 20 knots. Chance of showers. Waves 2 to 4 feet.

THURSDAY
North wind 10 to 15 knots. Rain showers likely. Waves 2 to 4 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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LHZ349-210415
Sturgeon Pt to Alabaster MI
404 PM EDT Tue May 20 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

THROUGH EARLY EVENING
Northeast wind 15 to 25 knots with gusts to around 35 knots. Mostly cloudy. Waves 3 to 5 feet.

TONIGHT
East wind 10 to 20 knots. Isolated showers. Waves 2 to 4 feet.

WEDNESDAY
Northeast wind 15 to 25 knots with gusts to around 30 knots. Chance of showers. Waves 3 to 5 feet.

WEDNESDAY NIGHT
North wind 10 to 20 knots. Chance of showers. Waves 3 to 5 feet.

THURSDAY
North wind 10 to 20 knots. Rain showers likely. Waves 3 to 5 feet.

Wave heights are valid for ice free areas.

See the open lakes forecast for days 3 through 5.

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JZ