FZUS53 KAPX 220203 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 1003 PM EDT Fri Aug 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. LSZ321-221015- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 5 to 10 knots becoming northwest early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 feet or less. .SATURDAY...Northwest wind 15 to 20 knots. Partly sunny. Waves 3 to 5 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest wind 10 to 20 knots. Partly 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. $$ LSZ322-221015- St. Marys River Point Iroquois to E. Potagannissing Bay- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 5 to 10 knots becoming southwest early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. patchy fog after midnight. .SATURDAY...Northwest wind 15 to 20 knots. Scattered showers and isolated thunderstorms. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Mostly cloudy. .SUNDAY...Northwest wind 10 to 20 knots. Partly sunny. Winds higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ341-221015- Seul Choix Point to 5NM West of Mackinac Bridge- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...Southwest wind 5 to 10 knots becoming northwest after midnight. Chance of thunderstorms early in the evening. Chance of showers through the night. Waves 2 to 3 feet. .SATURDAY...Northwest wind 10 to 15 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .SATURDAY NIGHT...Northwest wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. .SUNDAY...Northwest wind 10 to 20 knots. Partly 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. $$ LMZ342-221015- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 5 to 10 knots becoming northwest early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 feet or less. .SATURDAY...Northwest wind 15 to 20 knots. Scattered showers and thunderstorms. Waves 2 to 4 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 3 to 5 feet. .SUNDAY...Northwest wind 10 to 20 knots. Partly sunny. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ323-221015- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...Southwest wind 5 to 10 knots becoming west early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. patchy fog after midnight. Waves 2 feet or less. .SATURDAY...Northwest wind 15 to 20 knots. Scattered showers and thunderstorms. Waves 2 to 4 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 3 to 5 feet. .SUNDAY...Northwest wind 10 to 20 knots. Partly 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. $$ LMZ344-345-221015- Sleeping Bear Point to Grand Traverse Light MI- Point Betsie to Sleeping Bear Point MI- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...Southwest wind 5 to 10 knots becoming north 10 to 15 knots early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 feet or less. .SATURDAY...Northwest wind 15 to 20 knots. Scattered showers and thunderstorms. Waves 2 to 4 feet. .SATURDAY NIGHT...North wind 10 to 20 knots. Partly cloudy. Waves 3 to 5 feet. .SUNDAY...North wind 10 to 20 knots. Partly sunny. Waves 3 to 5 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LMZ346-221015- Manistee to Point Betsie MI- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...Southwest wind 5 to 10 knots becoming north 10 to 15 knots early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 to 3 feet. .SATURDAY...North wind 10 to 15 knots. Scattered showers and thunderstorms. Waves 2 to 3 feet. .SATURDAY NIGHT...North wind 10 to 20 knots. Partly cloudy. Waves 3 to 5 feet. .SUNDAY...North wind 10 to 20 knots. Mostly 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. $$ LHZ345-221015- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 5 to 10 knots becoming west early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 feet or less. .SATURDAY...Northwest wind 10 to 15 knots. Scattered showers and thunderstorms. Waves 2 to 3 feet. .SATURDAY NIGHT...Northwest wind 10 to 15 knots. Mostly cloudy. Waves 2 to 3 feet. .SUNDAY...Northwest wind 5 to 15 knots. Partly sunny. Waves 2 to 3 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ346-221015- St Ignace to False Detour Channel- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 5 to 10 knots becoming southwest early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 to 3 feet. .SATURDAY...Northwest wind 10 to 15 knots. Isolated showers and thunderstorms. Waves 2 feet or less. .SATURDAY NIGHT...Northwest wind 10 to 15 knots. Mostly cloudy. Waves 2 feet or less. .SUNDAY...Northwest wind 10 to 20 knots. Partly 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. $$ LHZ347-221015- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 5 to 10 knots becoming southwest early in the morning. Chance of showers and slight chance of thunderstorms. Waves 2 to 3 feet. .SATURDAY...Northwest wind 15 to 20 knots. Scattered showers and isolated thunderstorms. Waves 2 to 3 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 3 to 5 feet. .SUNDAY...Northwest wind 15 to 25 knots. Partly sunny. Waves 4 to 6 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ348-221015- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 10 to 15 knots becoming southwest 5 to 10 knots early in the morning. Chance of thunderstorms early in the evening. Chance of showers through the night. Slight chance of thunderstorms after midnight. Waves 2 to 4 feet. .SATURDAY...Northwest wind 15 to 20 knots. Showers and scattered thunderstorms. Waves 2 to 3 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots. Mostly cloudy. Waves 4 to 6 feet. .SUNDAY...Northwest wind 15 to 25 knots. Partly sunny. Waves 4 to 7 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ LHZ349-221015- Sturgeon Pt to Alabaster MI- 1003 PM EDT Fri Aug 21 2026 .OVERNIGHT...South wind 10 to 15 knots. Chance of showers and slight chance of thunderstorms. Waves 2 to 3 feet. .SATURDAY...Northwest wind 5 to 10 knots. Numerous showers and scattered thunderstorms. Waves 2 feet or less. .SATURDAY NIGHT...Northwest wind 15 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .SUNDAY...Northwest wind 10 to 20 knots. Partly sunny. Waves 2 to 4 feet. Winds and waves higher in the vicinity of thunderstorms. See the open lakes forecast for days 3 through 5. $$ FEF