FZUS53 KAPX 180727 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 327 AM EDT Mon May 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. LSZ321-181530- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest in the afternoon. Chance of thunderstorms early in the morning. Chance of showers through the day. Waves 2 to 4 feet subsiding to 2 feet or less in the afternoon. .TONIGHT...South wind 10 to 15 knots. Rain showers likely and a chance of thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers. Waves 4 to 7 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LSZ322-181530- St. Marys River Point Iroquois to E. Potagannissing Bay- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest 5 to 10 knots in the afternoon. Slight chance of thunderstorms early in the morning. Chance of showers through the day. Chance of thunderstorms in the morning. .TONIGHT...South wind 5 to 10 knots. Rain showers likely and a chance of thunderstorms. .TUESDAY...Southwest wind 15 to 20 knots. Rain showers. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-181530- Seul Choix Point to 5NM West of Mackinac Bridge- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest early in the evening. Chance of thunderstorms early in the morning. Chance of showers through the day. Waves 2 to 3 feet building to 3 to 5 feet in the morning. .TONIGHT...South wind 15 to 20 knots. Chance of showers and thunderstorms. Waves 4 to 6 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers. Waves 5 to 8 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ342-181530- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming southwest in the afternoon. Slight chance of thunderstorms early in the morning. Chance of showers through the day. Chance of thunderstorms in the morning. Waves 2 feet or less building to 2 to 3 feet in the morning. .TONIGHT...South wind 15 to 20 knots. Rain showers likely and a chance of thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 15 to 25 knots. Chance of showers. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-181530- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 10 to 15 knots. Gusts up to 30 knots. Chance of thunderstorms early in the morning. Chance of showers through the day. Slight chance of thunderstorms in the morning. Waves 2 to 3 feet. .TONIGHT...South wind 15 to 20 knots. Chance of showers and thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 10 to 20 knots. Rain showers likely. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 15 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ344-345-181530- Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 25 knots. Chance of thunderstorms early in the morning. Chance of showers through the day. Slight chance of thunderstorms in the afternoon. Waves 2 to 3 feet building to 2 to 4 feet in the morning. .TONIGHT...South wind 15 to 20 knots. Rain showers likely and a chance of thunderstorms. Waves 3 to 5 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers likely. Waves 4 to 7 feet. .TUESDAY NIGHT...Northwest wind 10 to 15 knots. Mostly cloudy. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-181530- Manistee to Point Betsie MI- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 25 knots becoming south 5 to 15 knots early in the evening. Chance of thunderstorms early in the morning. Chance of showers through the day. Slight chance of thunderstorms in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet in the morning. .TONIGHT...South wind 10 to 20 knots. Rain showers likely and a chance of thunderstorms. Waves 4 to 6 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers likely. Waves 5 to 8 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ345-181530- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING... .TODAY...Southeast wind 10 to 15 knots gusting to 25 knots, becoming west in the afternoon. Slight chance of showers and thunderstorms early in the morning, then chance of showers and thunderstorms in the morning. Waves 2 to 3 feet. .TONIGHT...South wind 5 to 10 knots. Rain showers likely and a chance of thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots. Rain showers. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-181530- St Ignace to False Detour Channel- 327 AM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING... .TODAY...Southeast wind 10 to 15 knots becoming southwest early in the evening. Slight chance of thunderstorms early in the morning. Chance of showers through the day. Chance of thunderstorms in the morning. Waves 2 to 4 feet. .TONIGHT...South wind 10 to 15 knots. Chance of showers and thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 15 to 25 knots. Rain showers. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ347-181530- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 327 AM EDT Mon May 18 2026 .TODAY...Southeast wind 10 to 15 knots becoming southwest in the afternoon. Slight chance of showers early in the morning, then chance of showers and slight chance of thunderstorms in the morning. Rain showers likely and a chance of thunderstorms in the afternoon. Waves 2 to 4 feet subsiding to 2 to 3 feet in the afternoon. .TONIGHT...South wind 5 to 10 knots. Chance of showers and thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots. Rain showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-181530- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 327 AM EDT Mon May 18 2026 .TODAY...Southeast wind 5 to 10 knots becoming south 10 to 20 knots in the morning. Slight chance of showers early in the morning. Rain showers likely and a chance of thunderstorms in the afternoon. Waves 2 to 3 feet building to 3 to 5 feet in the morning. .TONIGHT...South wind 10 to 15 knots. Chance of showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Chance of showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-181530- Sturgeon Pt to Alabaster MI- 327 AM EDT Mon May 18 2026 .TODAY...South wind 10 to 20 knots. Chance of showers and thunderstorms in the afternoon. Waves 2 to 4 feet. .TONIGHT...Southwest wind 10 to 20 knots. Rain showers likely and slight chance of thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Chance of showers. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ SJC