


Nearshore Marine Forecast
Issued by NWS Marquette, MI
Issued by NWS Marquette, MI
471 FZUS53 KMQT 180301 NSHMQT Nearshore Marine Forecast National Weather Service Marquette MI 1101 PM EDT Fri Oct 17 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. LMZ221-180800- Green Bay North of line from Cedar River MI to Rock Island Passage- 1101 PM EDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY... .REST OF TONIGHT...Southwest wind 10 to 20 knots. Cloudy with a chance of showers by midnight, then partly cloudy with a slight chance of showers late. Waves 3 to 6 feet occasionally to 8 feet subsiding to 2 to 3 feet. .SATURDAY...Southwest wind less than 10 knots backing south late. Mostly sunny. Waves subsiding to 1 to 2 feet. .SATURDAY NIGHT...Southwest wind less than 10 knots veering north 10 to 20 knots after midnight. Cloudy. A slight chance of showers in the evening, then showers likely after midnight. Waves building to 2 to 3 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 28 knots. Mostly cloudy. A chance of showers in the morning, then a slight chance of showers in the afternoon. Waves building to 2 to 4 feet. $$ LMZ248-250-180800- Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 1101 PM EDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT SATURDAY... .REST OF TONIGHT...Southwest wind 15 to 25 knots. Showers likely by midnight, then a chance of showers late. Waves 6 to 9 feet occasionally to 11 feet subsiding to 3 to 6 feet occasionally to 8 feet. .SATURDAY...Southwest wind less than 10 knots backing south late. Partly cloudy. A slight chance of showers through mid morning. A slight chance of showers late. Waves subsiding to 2 to 3 feet. .SATURDAY NIGHT...South wind less than 10 knots backing north 10 to 20 knots after midnight. Cloudy. A slight chance of showers in the evening, then showers likely after midnight. Waves subsiding to 1 to 2 feet, then building to 2 to 3 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 29 knots. Cloudy. Showers likely in the morning, then a chance of showers in the afternoon. Waves building to 2 to 4 feet. $$ LSZ240-241-180800- Saxon Harbor WI to Black River MI- Black River to Ontonagon MI- 1101 PM EDT Fri Oct 17 2025 /1001 PM CDT Fri Oct 17 2025/ .REST OF TONIGHT...Southwest wind 10 to 20 knots. Clear. Waves 2 to 3 feet subsiding to 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots veering northwest late. Mostly sunny through early afternoon then becoming mostly cloudy. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots. Cloudy with a chance of showers. Waves building to 2 to 4 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 27 knots. Partly cloudy. Waves building to 3 to 5 feet occasionally to 7 feet, then subsiding to 2 to 4 feet. $$ LSZ242-243-180800- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- 1101 PM EDT Fri Oct 17 2025 .REST OF TONIGHT...Southwest wind 10 to 20 knots. Clear. Waves 2 to 3 feet building to 2 to 4 feet. .SATURDAY...Southwest wind 10 to 15 knots veering west less than 10 knots by late morning. Sunny through mid morning then becoming partly cloudy. Waves subsiding to 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 10 to 20 knots becoming 15 to 20 knots after midnight. Gusts up to 27 knots. Cloudy with a chance of showers. Waves building to 3 to 5 feet occasionally to 7 feet. .SUNDAY...Northwest wind 20 to 25 knots with gusts up to 33 knots. Partly cloudy. A slight chance of showers in the morning. Waves building to 3 to 6 feet occasionally to 8 feet. $$ LSZ244-245-180800- Eagle River to Manitou Island MI- Manitou Island to Point Isabelle MI- 1101 PM EDT Fri Oct 17 2025 .REST OF TONIGHT...Southwest wind 10 to 20 knots. Mostly clear. Isolated showers by midnight. Waves 2 to 4 feet subsiding to 2 to 3 feet, then building to 2 to 4 feet. .SATURDAY...West wind 5 to 15 knots becoming less than 10 knots late. Mostly sunny. Waves subsiding to 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 5 to 15 knots increasing to 15 to 20 knots after midnight. Gusts up to 27 knots. Cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Waves building to 2 to 4 feet. .SUNDAY...Northwest wind 20 to 25 knots with gusts up to 33 knots. Mostly cloudy. A slight chance of showers in the morning. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. $$ LSZ246-180800- Point Isabelle to Lower Entrance of Portage Canal MI- 1101 PM EDT Fri Oct 17 2025 .REST OF TONIGHT...Southwest wind 5 to 15 knots. Partly cloudy by midnight then clearing. Waves 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots veering northwest late. Mostly sunny. Waves calm to 1 foot. .SATURDAY NIGHT...Northwest wind less than 10 knots becoming 5 to 15 knots after midnight. Gusts up to 25 knots. Cloudy. A slight chance of showers in the evening, then a chance of showers after midnight. Waves calm to 1 foot. .SUNDAY...Northwest wind 10 to 20 knots with gusts up to 32 knots. Cloudy with a slight chance of showers in the morning, then partly cloudy in the afternoon. Waves building to 1 to 2 feet. $$ LSZ247-180800- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 1101 PM EDT Fri Oct 17 2025 .REST OF TONIGHT...Southwest wind 10 to 15 knots. Mostly clear. Isolated showers by midnight. Waves 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots veering north late. Sunny through early afternoon then becoming partly cloudy. Waves calm to 1 foot. .SATURDAY NIGHT...Northwest wind 5 to 15 knots with gusts up to 26 knots. Cloudy with a chance of showers. Waves building to 1 to 2 feet. .SUNDAY...Northwest wind 15 to 20 knots with gusts up to 32 knots. Cloudy with a chance of showers in the morning, then partly cloudy with a slight chance of showers in the afternoon. Waves building to 2 to 4 feet, then subsiding to 2 to 3 feet. $$ LSZ248-180800- Huron Islands to Marquette MI- 1101 PM EDT Fri Oct 17 2025 .REST OF TONIGHT...Southwest wind 5 to 15 knots. Partly cloudy with isolated showers by midnight, then clear late. Waves 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots veering northwest by late morning, then veering northeast late. Sunny through early afternoon then becoming partly cloudy. Waves calm to 1 foot. .SATURDAY NIGHT...North wind less than 10 knots backing northwest 10 to 20 knots after midnight. Cloudy. A chance of showers in the evening, then showers likely after midnight. Waves building to 2 to 4 feet. .SUNDAY...Northwest wind 15 to 25 knots with gusts up to 33 knots. Cloudy with a chance of showers in the morning, then partly cloudy with a slight chance of showers in the afternoon. Waves building to 4 to 7 feet occasionally to 9 feet. $$ LSZ249-180800- Marquette to Munising MI- 1101 PM EDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...Southwest wind 10 to 20 knots diminishing to less than 10 knots late. Partly cloudy. Scattered showers by midnight, then a slight chance of showers late. Waves 2 to 3 feet subsiding to 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots backing northeast late. Sunny. A slight chance of showers by late morning. Waves calm to 1 foot. .SATURDAY NIGHT...Northeast wind less than 10 knots backing north 10 to 20 knots after midnight. Cloudy. A chance of showers in the evening, then showers likely after midnight. Waves building to 2 to 4 feet. .SUNDAY...Northwest wind up to 30 knots. Mostly cloudy. Showers likely in the morning, then a chance of showers in the afternoon. Waves building to 7 to 10 feet occasionally to 13 feet. $$ LSZ250-180800- Munising to Grand Marais MI- 1101 PM EDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...Southwest wind 10 to 20 knots. Mostly cloudy by midnight then becoming partly cloudy. A chance of showers. Waves 2 to 3 feet subsiding to 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots veering west by late morning, then veering northeast late. Mostly sunny. A slight chance of showers by late morning. Waves calm to 1 foot. .SATURDAY NIGHT...Northeast wind less than 10 knots backing north 10 to 20 knots after midnight. Cloudy. A chance of showers in the evening, then showers after midnight. Waves building to 2 to 4 feet. .SUNDAY...Northwest wind up to 30 knots with gale force gusts up to 37 knots. Cloudy. Showers likely in the morning, then a chance of showers in the afternoon. Waves building to 8 to 11 feet occasionally to 14 feet. $$ LSZ251-180800- Grand Marais to Whitefish Point MI- 1101 PM EDT Fri Oct 17 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 10 to 20 knots. Numerous showers by midnight, then a chance of showers late. Waves 2 to 3 feet subsiding to 1 to 2 feet. .SATURDAY...Southwest wind less than 10 knots veering west by late morning, then veering northeast late. Partly cloudy. A slight chance of showers through early afternoon, then a chance of showers late. Waves 1 to 2 feet. .SATURDAY NIGHT...East wind less than 10 knots backing north 10 to 20 knots after midnight. Cloudy. A chance of showers in the evening, then showers after midnight. Waves building to 2 to 3 feet. .SUNDAY...Northwest wind up to 30 knots with gale force gusts up to 37 knots. Cloudy. Showers in the morning, then a chance of showers in the afternoon. Waves building to 9 to 12 feet occasionally to 15 feet. $$ WFO MQT