FZUS53 KAPX 190218 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 1018 PM 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. LSZ321-191030- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots. Isolated showers and thunderstorms early in the evening, then numerous showers and scattered thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Numerous showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 7 feet. .WEDNESDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LSZ322-191030- St. Marys River Point Iroquois to E. Potagannissing Bay- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 10 to 15 knots. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. .TUESDAY...Southwest wind 15 to 20 knots. Numerous showers and isolated thunderstorms. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. .WEDNESDAY...Northwest wind 15 to 20 knots. Mostly sunny. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-191030- Seul Choix Point to 5NM West of Mackinac Bridge- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...Southeast wind 5 to 10 knots becoming south 10 to 20 knots after midnight. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. Waves 2 feet or less building to 2 to 4 feet after midnight. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest 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. $$ LMZ342-191030- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms through the night. Scattered showers after midnight. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 15 knots. Mostly sunny. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-191030- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Scattered showers and isolated thunderstorms after midnight. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...North wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet. .WEDNESDAY...Northwest 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. $$ LMZ344-345-191030- Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Isolated showers and thunderstorms early in the evening, then numerous showers and scattered thunderstorms after midnight. Waves 2 to 3 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 15 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. .WEDNESDAY...North wind 10 to 15 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-191030- Manistee to Point Betsie MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Scattered showers early in the evening. Scattered thunderstorms through the night. Numerous showers after midnight. Waves 2 to 4 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 4 to 6 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North wind 10 to 15 knots. 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. $$ LHZ345-191030- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms through the night. Scattered showers after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-191030- St Ignace to False Detour Channel- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers and thunderstorms early in the evening, then scattered showers and thunderstorms after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ347-191030- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 15 to 20 knots. Isolated showers early in the evening. Isolated thunderstorms through the night. Scattered showers after midnight. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots.Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-191030- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 15 knots. Isolated showers through the night. Isolated thunderstorms after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 5 to 8 feet. .WEDNESDAY...Northwest wind 15 to 25 knots. Sunny. Waves 5 to 8 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-191030- Sturgeon Pt to Alabaster MI- 1018 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT TUESDAY THROUGH TUESDAY EVENING... .OVERNIGHT...South wind 10 to 20 knots. Isolated showers through the night. Isolated thunderstorms after midnight. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers and isolated thunderstorms. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...North wind 10 to 20 knots. Sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ SJC