FZUS53 KAPX 201843 NSHAPX Nearshore Marine Forecast National Weather Service Gaylord MI 243 PM EDT Mon Apr 20 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. LSZ321-210245- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Slight chance of snow showers early in the evening. Waves 2 to 4 feet. .TUESDAY...Northwest wind 10 to 15 knots. Sunny. Waves 2 feet or less. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. Wave heights are valid for ice free areas. See the open lakes forecast for days 3 through 5. $$ LSZ322-210245- St. Marys River Point Iroquois to E. Potagannissing Bay- 243 PM EDT Mon Apr 20 2026 .TONIGHT...South wind 10 to 20 knots. Mostly cloudy. .TUESDAY...West wind 5 to 10 knots. Sunny. .TUESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. .WEDNESDAY...Light winds. Sunny. See the open lakes forecast for days 3 through 5. $$ LMZ341-210245- Seul Choix Point to 5NM West of Mackinac Bridge- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 15 to 25 knots becoming southwest 10 to 20 knots early in the morning. Mostly cloudy early in the evening then becoming partly cloudy. Waves 4 to 7 feet. Waves occasionally around 9 feet. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 4 to 6 feet. .TUESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LMZ342-210245- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Mostly cloudy. Waves 2 to 3 feet building to 3 to 5 feet after midnight. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 2 to 4 feet. .TUESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LMZ323-210245- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Mostly cloudy. Waves 2 feet or less building to 2 to 3 feet after midnight. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 2 to 3 feet. .TUESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LMZ344-210245- Sleeping Bear Point to Grand Traverse Light MI- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Mostly cloudy. Waves 2 to 4 feet. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 2 to 4 feet. .TUESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LMZ345-210245- Point Betsie to Sleeping Bear Point MI- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Mostly cloudy. Waves 2 to 4 feet building to 3 to 5 feet after midnight. .TUESDAY...Southwest wind 10 to 15 knots. Sunny. Waves 2 to 4 feet. .TUESDAY NIGHT...Light winds. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LMZ346-210245- Manistee to Point Betsie MI- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Mostly cloudy. Waves 3 to 5 feet. .TUESDAY...Southwest wind 10 to 15 knots. Sunny. Waves 3 to 5 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LHZ345-210245- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM EDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Mostly cloudy. Waves 2 feet or less. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 2 feet or less. .TUESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LHZ346-210245- St Ignace to False Detour Channel- 243 PM EDT Mon Apr 20 2026 .TONIGHT...South wind 10 to 20 knots. Mostly cloudy. Waves 2 to 4 feet. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 2 to 3 feet. .TUESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Southeast wind 5 to 10 knots. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LHZ347-210245- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island- 243 PM EDT Mon Apr 20 2026 .TONIGHT...South wind 10 to 20 knots. Mostly cloudy. Waves 2 to 3 feet. .TUESDAY...West wind 10 to 15 knots. Sunny. Waves 2 feet or less. .TUESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Light winds. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LHZ348-210245- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Partly cloudy early in the evening then becoming mostly cloudy. Waves 2 to 4 feet. .TUESDAY...South wind 15 to 20 knots. Sunny. Waves 2 to 4 feet. .TUESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Northeast wind 5 to 10 knots. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ LHZ349-210245- Sturgeon Pt to Alabaster MI- 243 PM EDT Mon Apr 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM EDT TUESDAY THROUGH TUESDAY AFTERNOON... .TONIGHT...South wind 10 to 20 knots with gusts up to 25 knots. Partly cloudy early in the evening then becoming mostly cloudy. Waves 2 to 4 feet. .TUESDAY...Southwest wind 10 to 20 knots. Mostly sunny. Waves 2 to 4 feet. .TUESDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 2 feet or less. .WEDNESDAY...Northeast wind 5 to 10 knots. Sunny. Waves 2 feet or less. See the open lakes forecast for days 3 through 5. $$ ELD