FZUS53 KAPX 181704 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 104 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. LSZ321-190115- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...Southwest wind 5 to 10 knots becoming northwest early in the evening. Isolated showers and thunderstorms. Waves 2 feet or less. .TONIGHT...Southeast wind 10 to 15 knots. Numerous showers and scattered thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Numerous 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. $$ LSZ322-190115- St. Marys River Point Iroquois to E. Potagannissing Bay- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...South wind 5 to 10 knots. Scattered showers and isolated thunderstorms. .TONIGHT...Southeast wind 10 to 15 knots. Scattered thunderstorms and isolated showers. .TUESDAY...Southwest wind 15 to 20 knots. Numerous showers. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-190115- Seul Choix Point to 5NM West of Mackinac Bridge- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...South wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .TONIGHT...South wind 15 to 20 knots. Scattered showers and thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Scattered 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. $$ LMZ342-190115- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THE AFTERNOON...Southwest wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .TONIGHT...South wind 15 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-190115- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THE AFTERNOON...Southwest wind 10 to 15 knots. Isolated showers and thunderstorms. Waves 2 feet or less. .TONIGHT...South wind 15 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers. Waves 2 to 4 feet. .TUESDAY NIGHT...North wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ345-190115- Point Betsie to Sleeping Bear Point MI- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...Southwest wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TONIGHT...South wind 15 to 20 knots. Numerous showers and scattered thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 20 knots. Scattered showers. Waves 3 to 5 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ344-190115- Sleeping Bear Point to Grand Traverse Light MI- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... .REST OF THE AFTERNOON...Southwest wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .TONIGHT...South wind 10 to 20 knots. Numerous showers and scattered thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers. Waves 3 to 5 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-190115- Manistee to Point Betsie MI- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...Southwest wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TONIGHT...South wind 10 to 20 knots. Scattered showers and thunderstorms. Waves 3 to 5 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers. Waves 4 to 6 feet. .TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ345-190115- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...West wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 feet or less. .TONIGHT...Southeast wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers. Waves 2 to 4 feet. .TUESDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-190115- St Ignace to False Detour Channel- 104 PM EDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...South wind 10 to 15 knots becoming southwest early in the evening. Scattered showers and thunderstorms. Waves 2 to 3 feet. .TONIGHT...Southeast wind 10 to 15 knots. Scattered showers and thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ347-190115- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 104 PM EDT Mon May 18 2026 ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...West wind 10 to 15 knots becoming south 5 to 10 knots early in the evening. Numerous showers and scattered thunderstorms. Waves 2 feet or less. .TONIGHT...South wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 feet or less. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 7 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-190115- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 104 PM EDT Mon May 18 2026 ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...South wind 10 to 15 knots. Numerous showers and scattered thunderstorms. Waves 3 to 5 feet. .TONIGHT...South wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Scattered showers. Waves 3 to 5 feet. .TUESDAY NIGHT...Northwest wind 15 to 25 knots. Mostly cloudy. Waves 4 to 7 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-190115- Sturgeon Pt to Alabaster MI- 104 PM EDT Mon May 18 2026 ...SEVERE THUNDERSTORM WATCH 221 IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .REST OF THE AFTERNOON...South wind 10 to 15 knots. Scattered showers and thunderstorms. Waves 2 to 4 feet. .TONIGHT...South wind 10 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 4 feet. .TUESDAY...Southwest wind 15 to 25 knots. Scattered showers. Waves 3 to 5 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. $$ MSB