324 FZUS53 KMQT 180902 NSHMQT Nearshore Marine Forecast National Weather Service Marquette MI 502 AM EDT Sat Apr 18 2026 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. LMZ221-182000- Green Bay North of line from Cedar River MI to Rock Island Passage- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING... .EARLY THIS MORNING...Northwest wind 15 to 20 knots. Cloudy with a slight chance of rain showers. Waves 2 to 3 feet building to 2 to 4 feet. .TODAY...Northwest wind 15 to 20 knots backing west 10 to 15 knots by late morning. Partly cloudy. A slight chance of rain showers and snow showers by late morning. Waves subsiding to 1 to 2 feet, then building to 2 to 3 feet. .TONIGHT...West wind 10 to 15 knots. Partly cloudy. Waves subsiding to 1 to 2 feet. .SUNDAY...Northwest wind 10 to 15 knots. Partly cloudy. Waves 1 to 2 feet. .SUNDAY NIGHT...North wind 5 to 15 knots backing northwest less than 10 knots after midnight. Clear. Waves 1 to 2 feet. $$ LMZ248-250-182000- Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING... .EARLY THIS MORNING...Northwest wind 15 to 20 knots. Cloudy with a chance of rain showers. Patchy fog. Waves 3 to 5 feet occasionally to 7 feet. .TODAY...Northwest wind 15 to 20 knots backing west 10 to 15 knots by late morning. Mostly cloudy. A slight chance of rain showers and snow showers by late morning. Waves subsiding to 2 to 3 feet. .TONIGHT...Northwest wind 10 to 15 knots. Partly cloudy. A chance of flurries late. Waves subsiding to 1 to 2 feet. .SUNDAY...Northwest wind 15 to 20 knots. Partly cloudy. Waves building to 2 to 3 feet. .SUNDAY NIGHT...North wind 10 to 20 knots backing northwest less than 10 knots after midnight. Mostly clear. Waves subsiding to 1 to 2 feet. $$ LSZ240-182000- Saxon Harbor WI to Black River MI- 502 AM EDT Sat Apr 18 2026 /402 AM CDT Sat Apr 18 2026/ ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .EARLY THIS MORNING...West wind 20 to 25 knots. Mostly cloudy. Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet. .TODAY...West wind 20 to 25 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves building to 3 to 6 feet occasionally to 8 feet. .TONIGHT...West wind 20 to 25 knots veering northwest 15 to 20 knots by midnight. Partly cloudy. Waves subsiding to 2 to 4 feet. .SUNDAY...Northwest wind 10 to 20 knots. Partly cloudy in the morning then clearing. A chance of flurries in the morning. Waves subsiding to 1 to 2 feet. .SUNDAY NIGHT...Northwest wind less than 10 knots in the evening becoming variable. Clear. Waves 1 to 2 feet. $$ LSZ241-182000- Black River to Ontonagon MI- 502 AM EDT Sat Apr 18 2026 /402 AM CDT Sat Apr 18 2026/ ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT /10 AM CDT/ THIS MORNING... ...GALE WARNING IN EFFECT FROM 11 AM EDT /10 AM CDT/ THIS MORNING THROUGH THIS EVENING... .EARLY THIS MORNING...West wind 20 to 25 knots. Mostly cloudy. Waves 3 to 6 feet occasionally to 8 feet building to 4 to 7 feet occasionally to 9 feet. .TODAY...West wind up to 30 knots. Mostly cloudy through early afternoon then becoming mostly sunny. A slight chance of snow showers by late morning. Waves building to 6 to 9 feet occasionally to 11 feet. .TONIGHT...Northwest wind 20 to 25 knots diminishing to 15 to 20 knots late. Partly cloudy. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .SUNDAY...Northwest wind 10 to 20 knots. Mostly sunny. Waves subsiding to 2 to 3 feet. .SUNDAY NIGHT...Northwest wind 5 to 15 knots becoming less than 10 knots after midnight. Clear. Waves subsiding to 1 to 2 feet. $$ LSZ242-243-182000- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING... ...GALE WARNING IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH THIS EVENING... .EARLY THIS MORNING...West wind 20 to 25 knots. Mostly cloudy. Waves 4 to 7 feet occasionally to 9 feet. .TODAY...West wind up to 30 knots with gale force gusts up to 37 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves building to 9 to 12 feet occasionally to 15 feet. .TONIGHT...Northwest wind up to 30 knots diminishing to 20 to 25 knots late. Mostly cloudy through late evening then becoming partly cloudy. A chance of sprinkles and snow showers through late evening, then a chance of snow showers by midnight. Waves subsiding to 4 to 7 feet occasionally to 9 feet. .SUNDAY...Northwest wind 15 to 25 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves subsiding to 2 to 3 feet. .SUNDAY NIGHT...Northwest wind 5 to 15 knots. Clear. Waves subsiding to 1 to 2 feet. $$ LSZ245-182000- Manitou Island to Point Isabelle MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 1 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...Northwest wind 20 to 25 knots. Cloudy. Waves 3 to 5 feet occasionally to 7 feet. .TODAY...West wind up to 30 knots. Mostly cloudy. A slight chance of snow showers by late morning. Waves building to 4 to 7 feet occasionally to 9 feet. .TONIGHT...Northwest wind 20 to 25 knots with gale force gusts up to 34 knots. Mostly cloudy through late evening then becoming partly cloudy. A chance of snow showers through late evening, then a slight chance of snow showers by midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet, then building to 4 to 7 feet occasionally to 9 feet. .SUNDAY...Northwest wind 15 to 25 knots. Partly cloudy. Waves subsiding to 2 to 4 feet. .SUNDAY NIGHT...Northwest wind 5 to 15 knots. Mostly clear. Waves subsiding to 1 to 2 feet. $$ LSZ244-182000- Eagle River to Manitou Island MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING... ...GALE WARNING IN EFFECT FROM 11 AM EDT THIS MORNING THROUGH THIS EVENING... .EARLY THIS MORNING...Northwest wind 20 to 25 knots. Cloudy. Waves 4 to 7 feet occasionally to 9 feet. .TODAY...West wind up to 30 knots with gale force gusts up to 37 knots. Mostly cloudy. A slight chance of snow showers by late morning. Waves building to 9 to 12 feet occasionally to 15 feet. .TONIGHT...Northwest wind up to 30 knots. Mostly cloudy through late evening then becoming partly cloudy. A chance of snow showers through midnight. Waves subsiding to 5 to 8 feet occasionally to 10 feet. .SUNDAY...Northwest wind 15 to 25 knots. Partly cloudy. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SUNDAY NIGHT...Northwest wind 10 to 20 knots diminishing to less than 10 knots after midnight. Mostly clear. Waves subsiding to 1 to 2 feet. $$ LSZ246-182000- Point Isabelle to Lower Entrance of Portage Canal MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 1 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...West wind 15 to 20 knots with gusts up to 27 knots. Mostly cloudy. Waves 1 to 2 feet. .TODAY...West wind up to 30 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves building to 3 to 5 feet occasionally to 7 feet. .TONIGHT...Northwest wind 15 to 25 knots becoming 15 to 20 knots late. Gusts up to 33 knots. Partly cloudy. A chance of snow showers through midnight. Waves subsiding to 2 to 3 feet. .SUNDAY...Northwest wind 15 to 20 knots. Partly cloudy. Waves subsiding to 1 to 2 feet. .SUNDAY NIGHT...Northwest wind 5 to 15 knots. Mostly clear. Waves 1 to 2 feet. $$ LSZ247-182000- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 1 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...West wind 15 to 20 knots with gusts up to 28 knots. Cloudy. Waves 2 to 4 feet. .TODAY...West wind up to 30 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves building to 4 to 7 feet occasionally to 9 feet, then subsiding to 3 to 6 feet occasionally to 8 feet. .TONIGHT...West wind 20 to 25 knots veering northwest 15 to 20 knots late. Gusts up to 33 knots. Partly cloudy through midnight then becoming mostly cloudy. A chance of snow showers through midnight. Waves subsiding to 2 to 4 feet. .SUNDAY...Northwest wind 15 to 20 knots. Partly cloudy. Waves subsiding to 2 to 3 feet, then building to 2 to 4 feet. .SUNDAY NIGHT...West wind 5 to 15 knots. Clear. Waves subsiding to 1 to 2 feet. $$ LSZ248-182000- Huron Islands to Marquette MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 1 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...Northwest wind 20 to 25 knots with gusts up to 32 knots. Cloudy. Waves 3 to 6 feet occasionally to 8 feet. .TODAY...West wind up to 30 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves building to 5 to 8 feet occasionally to 10 feet, then subsiding to 4 to 7 feet occasionally to 9 feet. .TONIGHT...Northwest wind 20 to 25 knots with gale force gusts up to 34 knots. Partly cloudy through midnight then becoming mostly cloudy. A chance of flurries through late evening, then a chance of snow showers by midnight. Waves subsiding to 3 to 6 feet occasionally to 8 feet. .SUNDAY...Northwest wind 15 to 25 knots. Partly cloudy. Waves subsiding to 3 to 5 feet occasionally to 7 feet. .SUNDAY NIGHT...Northwest wind 10 to 20 knots diminishing to less than 10 knots after midnight. Mostly clear. Waves subsiding to 1 to 2 feet. $$ LSZ249-182000- Marquette to Munising MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY EVENING... .EARLY THIS MORNING...Northwest wind 20 to 25 knots. Cloudy with a slight chance of rain showers and sleet. Waves 5 to 8 feet occasionally to 10 feet building to 6 to 9 feet occasionally to 11 feet. .TODAY...Northwest wind 20 to 25 knots with gusts up to 32 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves subsiding to 5 to 8 feet occasionally to 10 feet, then building to 7 to 10 feet occasionally to 13 feet. .TONIGHT...Northwest wind 20 to 25 knots. Partly cloudy through late evening then becoming mostly cloudy. A chance of snow showers. Waves subsiding to 5 to 8 feet occasionally to 10 feet, then building to 6 to 9 feet occasionally to 11 feet. .SUNDAY...Northwest wind 20 to 25 knots. Partly cloudy. Waves building to 6 to 9 feet occasionally to 11 feet, then subsiding to 5 to 8 feet occasionally to 10 feet. .SUNDAY NIGHT...Northwest wind 10 to 20 knots. Mostly clear. Waves subsiding to 2 to 3 feet. $$ LSZ250-182000- Munising to Grand Marais MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...Northwest wind 20 to 25 knots. Cloudy with a chance of rain showers possibly mixed with sleet. Patchy fog. Waves 5 to 8 feet occasionally to 10 feet building to 6 to 9 feet occasionally to 11 feet. .TODAY...Northwest wind up to 30 knots. Partly cloudy. A slight chance of snow showers by late morning. Waves building to 9 to 12 feet occasionally to 15 feet. .TONIGHT...Northwest wind up to 30 knots. Partly cloudy through late evening then becoming mostly cloudy. A chance of snow showers. Waves subsiding to 7 to 10 feet occasionally to 13 feet. .SUNDAY...Northwest wind 20 to 25 knots. Mostly cloudy. A chance of flurries in the morning. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .SUNDAY NIGHT...Northwest wind 15 to 25 knots diminishing to 10 to 15 knots after midnight. Partly cloudy. Waves subsiding to 2 to 4 feet. $$ LSZ251-182000- Grand Marais to Whitefish Point MI- 502 AM EDT Sat Apr 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH THIS EVENING... .EARLY THIS MORNING...West wind 20 to 25 knots. Cloudy with a chance of rain showers. Patchy fog. Waves 3 to 5 feet occasionally to 7 feet building to 5 to 8 feet occasionally to 10 feet. .TODAY...West wind up to 30 knots. Mostly cloudy. A slight chance of rain showers and sleet through mid morning, then a slight chance of snow showers by late morning. Waves building to 9 to 12 feet occasionally to 15 feet. .TONIGHT...Northwest wind up to 30 knots. Partly cloudy with a slight chance of snow showers through late evening, then mostly cloudy with a chance of snow showers by midnight. Waves subsiding to 8 to 11 feet occasionally to 14 feet. .SUNDAY...Northwest wind 20 to 25 knots. Mostly cloudy. A chance of flurries in the morning. Waves subsiding to 6 to 9 feet occasionally to 11 feet. .SUNDAY NIGHT...Northwest wind 15 to 25 knots diminishing to 10 to 15 knots after midnight. Partly cloudy. Waves subsiding to 2 to 4 feet. $$ WFO MQT