Nearshore Marine Forecast
Issued by NWS Marquette, MI
Issued by NWS Marquette, MI
452 FZUS53 KMQT 222102 NSHMQT Nearshore Marine Forecast National Weather Service Marquette MI 502 PM EDT Fri Aug 22 2025 For waters within five nautical miles of shore 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. LMZ221-230800- Green Bay North of line from Cedar River MI to Rock Island Passage- 502 PM EDT Fri Aug 22 2025 .LATE THIS AFTERNOON...Southwest wind 10 to 15 knots. Cloudy with a slight chance of showers and thunderstorms. Waves 1 to 2 feet building to 2 to 3 feet. .TONIGHT...Southwest wind 10 to 15 knots veering west late. Mostly cloudy with a chance of showers and thunderstorms through midnight, then mostly clear late. Waves subsiding to 1 to 2 feet. .SATURDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves building to 2 to 3 feet, then subsiding to 1 to 2 feet. .SATURDAY NIGHT...West wind 10 to 15 knots. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 15 knots. Partly cloudy. A slight chance of showers in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Waves 1 to 2 feet. $$ LMZ248-250-230800- Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 502 PM EDT Fri Aug 22 2025 .LATE THIS AFTERNOON...Southwest wind 15 to 20 knots. Cloudy with a slight chance of showers and thunderstorms. Waves 2 to 3 feet building to 2 to 4 feet. .TONIGHT...Southwest wind 10 to 20 knots veering west 10 to 15 knots late. Cloudy with a chance of showers and thunderstorms through midnight, then partly cloudy with a slight chance of showers and thunderstorms late. Waves subsiding to 2 to 3 feet. .SATURDAY...West wind 10 to 20 knots veering northwest 10 to 15 knots late. Mostly sunny. A slight chance of showers late. Waves subsiding to 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 10 to 15 knots. Mostly clear. Waves 1 to 2 feet. .SUNDAY...West wind 10 to 20 knots. Partly cloudy. A chance of showers and a slight chance of thunderstorms in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. Waves building to 2 to 3 feet. $$ LSZ240-230800- Saxon Harbor WI to Black River MI- 502 PM EDT Fri Aug 22 2025 /402 PM CDT Fri Aug 22 2025/ .LATE THIS AFTERNOON...Southwest wind less than 10 knots. Mostly cloudy with a chance of showers and thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind 10 to 15 knots veering west 15 to 20 knots late. Mostly clear. A chance of thunderstorms and a slight chance of showers through late evening. Waves building to 2 to 4 feet. .SATURDAY...West wind 15 to 20 knots. Partly cloudy. A slight chance of showers late. Waves 2 to 4 feet. .SATURDAY NIGHT...West wind 15 to 20 knots. Mostly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Waves subsiding to 2 to 3 feet, then building to 2 to 4 feet. .SUNDAY...Northwest wind 15 to 20 knots. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Waves 2 to 4 feet. $$ LSZ241-230800- Black River to Ontonagon MI- 502 PM EDT Fri Aug 22 2025 /402 PM CDT Fri Aug 22 2025/ ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .LATE THIS AFTERNOON...Southwest wind less than 10 knots. Cloudy with a chance of showers and thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind 10 to 15 knots veering west 15 to 20 knots late. Mostly clear. A chance of showers and thunderstorms through late evening. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY...West wind 15 to 20 knots with gusts up to 27 knots. Partly cloudy. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...West wind 15 to 20 knots. Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and a slight chance of thunderstorms after midnight. Waves 3 to 5 feet occasionally to 7 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 27 knots. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. $$ LSZ242-243-230800- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT SATURDAY THROUGH MONDAY AFTERNOON... .LATE THIS AFTERNOON...Southwest wind 10 to 15 knots. Cloudy with a chance of showers and thunderstorms. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 15 knots veering west 15 to 20 knots late. Partly cloudy. A chance of thunderstorms and a slight chance of showers through late evening, then a slight chance of showers and thunderstorms by midnight. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY...West wind 15 to 20 knots with gusts up to 33 knots. Partly cloudy. Waves building to 3 to 6 feet occasionally to 8 feet. .SATURDAY NIGHT...West wind 15 to 20 knots with gusts up to 31 knots. Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves subsiding to 3 to 5 feet occasionally to 7 feet, then building to 3 to 6 feet occasionally to 8 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 31 knots. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Waves 3 to 6 feet occasionally to 8 feet. $$ LSZ245-230800- Manitou Island to Point Isabelle MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... .LATE THIS AFTERNOON...West wind less than 10 knots. Cloudy with a chance of showers and thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind 5 to 15 knots veering west 10 to 15 knots late. Mostly cloudy with a chance of showers and thunderstorms through late evening, then partly cloudy with a slight chance of showers and thunderstorms by midnight. Waves building to 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots with gusts up to 28 knots. Mostly sunny. Waves building to 2 to 4 feet, then subsiding to 2 to 3 feet. .SATURDAY NIGHT...West wind 10 to 15 knots with gusts up to 27 knots. Mostly clear in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Waves subsiding to 1 to 2 feet, then building to 2 to 3 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 29 knots. Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Waves building to 2 to 4 feet. $$ LSZ244-230800- Eagle River to Manitou Island MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .LATE THIS AFTERNOON...West wind less than 10 knots. Cloudy with a chance of showers and thunderstorms. Waves 1 to 2 feet. .TONIGHT...Southwest wind 5 to 15 knots veering west 10 to 20 knots late. Mostly cloudy with a chance of showers and thunderstorms through late evening, then partly cloudy with a slight chance of showers and thunderstorms by midnight. Waves building to 2 to 3 feet. .SATURDAY...West wind 15 to 20 knots with gusts up to 31 knots. Mostly sunny. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...West wind 15 to 20 knots with gusts up to 28 knots. Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Waves subsiding to 2 to 4 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 30 knots. Mostly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers in the afternoon. Waves building to 3 to 5 feet occasionally to 7 feet. $$ LSZ246-230800- Point Isabelle to Lower Entrance of Portage Canal MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... .LATE THIS AFTERNOON...West wind less than 10 knots with gusts up to 17 knots. Showers likely and a chance of thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind less than 10 knots veering west 10 to 15 knots late. Gusts up to 22 knots. Mostly cloudy through late evening then becoming partly cloudy. A chance of showers and thunderstorms through late evening, then a slight chance of showers and thunderstorms by midnight. Waves building to 1 to 2 feet. .SATURDAY...West wind 10 to 20 knots with gusts up to 31 knots. Partly cloudy. Waves 1 to 2 feet. .SATURDAY NIGHT...West wind 10 to 15 knots with gusts up to 30 knots. Partly cloudy with a slight chance of showers in the evening, then mostly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves 1 to 2 feet. .SUNDAY...Northwest wind 10 to 15 knots with gusts up to 29 knots. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Waves building to 1 to 2 feet. $$ LSZ247-230800- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... .LATE THIS AFTERNOON...West wind less than 10 knots. Showers likely and a chance of thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind 5 to 15 knots veering west 10 to 20 knots late. Mostly cloudy through late evening then becoming mostly clear. A chance of showers and thunderstorms through late evening, then a slight chance of showers and thunderstorms by midnight. Waves building to 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots with gusts up to 31 knots. Partly cloudy. Waves building to 2 to 3 feet. .SATURDAY NIGHT...West wind 10 to 20 knots with gusts up to 29 knots. Partly cloudy with a chance of showers in the evening, then mostly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves subsiding to 1 to 2 feet. .SUNDAY...Northwest wind 10 to 20 knots with gusts up to 30 knots. Mostly cloudy. Showers likely and a slight chance of thunderstorms in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Waves building to 2 to 3 feet. $$ LSZ248-230800- Huron Islands to Marquette MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH LATE SATURDAY NIGHT... .LATE THIS AFTERNOON...West wind less than 10 knots. Showers and a chance of thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind less than 10 knots veering west 10 to 20 knots late. Cloudy with showers likely and a chance of thunderstorms through late evening, then partly cloudy with a slight chance of showers and thunderstorms by midnight. Mostly clear late. Waves building to 2 to 3 feet. .SATURDAY...Northwest wind 15 to 20 knots with gusts up to 29 knots. Mostly sunny. Waves building to 2 to 4 feet. .SATURDAY NIGHT...West wind 10 to 20 knots with gusts up to 28 knots. Mostly clear with a slight chance of showers in the evening, then mostly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves subsiding to 1 to 2 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 28 knots. Mostly cloudy with a chance of showers and a slight chance of thunderstorms. Waves building to 2 to 4 feet. $$ LSZ249-230800- Marquette to Munising MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... .LATE THIS AFTERNOON...West wind less than 10 knots. Showers and a chance of thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind less than 10 knots increasing to 10 to 15 knots late. Cloudy with showers and a chance of thunderstorms through late evening, then partly cloudy with a chance of showers and thunderstorms by midnight. Mostly clear late. Waves building to 1 to 2 feet. .SATURDAY...Northwest wind 15 to 20 knots. Mostly sunny. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...West wind 10 to 15 knots with gusts up to 24 knots. Partly cloudy. A chance of showers and a slight chance of thunderstorms after midnight. Waves subsiding to 2 to 4 feet. .SUNDAY...Northwest wind 10 to 20 knots. Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the morning, then showers likely and a chance of thunderstorms in the afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. $$ LSZ250-230800- Munising to Grand Marais MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .LATE THIS AFTERNOON...Southwest wind less than 10 knots. Cloudy with a chance of showers and thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind 5 to 15 knots. Cloudy through midnight then becoming partly cloudy. Showers likely in the evening. A chance of thunderstorms through the night. A chance of showers after midnight. Waves building to 1 to 2 feet. .SATURDAY...West wind 15 to 20 knots veering northwest late. Mostly sunny. A slight chance of showers and thunderstorms through mid morning. Waves building to 3 to 6 feet occasionally to 8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...West wind 15 to 20 knots. Mostly clear with a slight chance of showers in the evening, then mostly cloudy with a chance of showers and a slight chance of thunderstorms after midnight. Waves subsiding to 2 to 4 feet. .SUNDAY...Northwest wind 15 to 20 knots. Mostly cloudy. Showers likely and a slight chance of thunderstorms in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. $$ LSZ251-230800- Grand Marais to Whitefish Point MI- 502 PM EDT Fri Aug 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY MORNING THROUGH SUNDAY MORNING... .LATE THIS AFTERNOON...Southwest wind less than 10 knots. Cloudy with a chance of showers and thunderstorms. Waves calm to 1 foot. .TONIGHT...Southwest wind less than 10 knots increasing to 10 to 15 knots late. Mostly cloudy. Showers and a chance of thunderstorms through midnight, then a slight chance of showers and thunderstorms late. Waves calm to 1 foot. .SATURDAY...West wind 10 to 20 knots becoming 15 to 20 knots by late morning. Partly cloudy. A slight chance of showers and thunderstorms through mid morning. Waves building to 3 to 5 feet occasionally to 7 feet. .SATURDAY NIGHT...West wind 10 to 15 knots. Partly cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Waves subsiding to 2 to 4 feet. .SUNDAY...West wind 15 to 20 knots. Mostly cloudy. Showers likely and a slight chance of thunderstorms in the morning, then a chance of showers and a slight chance of thunderstorms in the afternoon. Waves building to 3 to 6 feet occasionally to 8 feet. $$ WFO MQT