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FZUS53 KMQT 180902
NSHMQT

Nearshore Marine Forecast
National Weather Service Marquette MI
501 AM EDT Sat Oct 18 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.

LMZ221-182000-
Green Bay North of line from Cedar River MI to Rock Island
Passage-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE
SUNDAY NIGHT...

.EARLY THIS MORNING...Southwest wind 10 to 15 knots. Mostly
cloudy with a chance of showers. Waves 2 to 4 feet subsiding to
2 to 3 feet.
.TODAY...Southwest wind 10 to 15 knots backing south late. Mostly
sunny. Waves subsiding to 1 to 2 feet.
.TONIGHT...Southwest wind less than 10 knots veering north 5 to
15 knots with gusts up to 26 knots by midnight, then increasing
to 15 to 20 knots late. Cloudy. A slight chance of showers by
midnight. Showers late. Waves building to 2 to 4 feet.
.SUNDAY...Northwest wind 20 to 25 knots with gale force gusts up
to 34 knots. Cloudy. Showers likely in the morning, then a slight
chance of showers in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY NIGHT...Northwest wind 15 to 25 knots diminishing to
10 to 15 knots after midnight. Mostly clear. Waves subsiding to
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 Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

.EARLY THIS MORNING...Southwest wind 10 to 15 knots with gusts up
to 23 knots. Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Waves 4 to 7 feet occasionally to 9 feet
subsiding to 3 to 6 feet occasionally to 8 feet.
.TODAY...Southwest wind 5 to 15 knots. Mostly cloudy through mid
morning then becoming mostly sunny. A slight chance of showers
through mid morning. Waves subsiding to 2 to 3 feet.
.TONIGHT...Southwest wind 5 to 15 knots veering north 10 to
20 knots by midnight. A chance of showers by midnight. Showers
late. Waves subsiding to 1 to 2 feet, then building to 2 to
4 feet.
.SUNDAY...Northwest wind 20 to 25 knots with gale force gusts up
to 35 knots. Cloudy. Showers in the morning, then a chance of
showers in the afternoon. Waves building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY NIGHT...Northwest wind 15 to 25 knots diminishing to
10 to 15 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 Oct 18 2025 /402 AM CDT Sat Oct 18 2025/

...SMALL CRAFT ADVISORY IN EFFECT SUNDAY AFTERNOON...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...Southwest wind less than 10 knots veering west 5 to
15 knots by late morning. Mostly sunny. Waves calm to 1 foot.
.TONIGHT...West wind 5 to 15 knots veering northwest 10 to
15 knots by midnight. Cloudy. A chance of showers through
midnight. Waves building to 2 to 3 feet.
.SUNDAY...Northwest wind 15 to 20 knots. Partly cloudy. Waves
building to 2 to 4 feet, then subsiding to 2 to 3 feet.
.SUNDAY NIGHT...West wind 5 to 15 knots backing south less than
10 knots after midnight. Mostly clear. Waves subsiding to 1 to
2 feet.

$$

LSZ241-182000-
Black River to Ontonagon MI-
502 AM EDT Sat Oct 18 2025 /402 AM CDT Sat Oct 18 2025/

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves 1 to 2 feet.
.TODAY...Southwest wind less than 10 knots veering west 10 to
15 knots by late morning. Sunny through early afternoon then
becoming partly cloudy. Waves building to 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots veering northwest 10 to
20 knots by midnight. Cloudy. A slight chance of showers through
late evening, then a chance of showers by midnight. A slight
chance of showers late. Waves building to 2 to 3 feet.
.SUNDAY...Northwest wind 15 to 20 knots. Partly cloudy. Waves
building to 3 to 5 feet occasionally to 7 feet.
.SUNDAY NIGHT...Northwest wind 10 to 20 knots backing southwest
less than 10 knots after midnight. Mostly 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 Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind 10 to 15 knots. Clear. Waves
2 to 3 feet.
.TODAY...Southwest wind 10 to 15 knots veering west by late
morning. Mostly sunny. Waves subsiding to 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots veering northwest 15 to
20 knots by midnight. Mostly cloudy. A chance of showers by
midnight. Waves building to 2 to 3 feet.
.SUNDAY...Northwest wind 15 to 20 knots. Mostly cloudy. A slight
chance of showers in the morning. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY NIGHT...Northwest wind 10 to 20 knots backing west 5 to
15 knots after midnight. Mostly clear. Waves subsiding to 1 to
2 feet.

$$

LSZ245-182000-
Manitou Island to Point Isabelle MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves 1 to 2 feet.
.TODAY...Southwest wind less than 10 knots veering northwest
late. Sunny. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 15 knots veering northwest 10 to
20 knots by midnight. Partly cloudy through late evening then
becoming cloudy. A chance of showers late. Waves building to 2 to
3 feet.
.SUNDAY...Northwest wind 15 to 25 knots. Mostly cloudy. A chance
of showers in the morning. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY NIGHT...Northwest wind 15 to 20 knots diminishing to 5 to
15 knots after midnight. Partly cloudy. Waves subsiding to 1 to
2 feet.

$$

LSZ244-182000-
Eagle River to Manitou Island MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind 10 to 15 knots. Clear. Waves
2 to 3 feet.
.TODAY...Southwest wind less than 10 knots veering west 10 to
15 knots by late morning. Sunny. Waves subsiding to 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots veering northwest 10 to
20 knots by midnight. Partly cloudy through late evening then
becoming cloudy. A chance of showers late. Waves building to 2 to
4 feet.
.SUNDAY...Northwest wind 15 to 20 knots with gusts up to
27 knots. Cloudy with a slight chance of showers in the morning,
then partly cloudy in the afternoon. Waves building to 3 to
6 feet occasionally to 8 feet.
.SUNDAY NIGHT...Northwest wind 15 to 20 knots diminishing to 5 to
15 knots after midnight. Partly cloudy. Waves subsiding to 1 to
2 feet.

$$

LSZ246-182000-
Point Isabelle to Lower Entrance of Portage Canal MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...Southwest wind less than 10 knots veering west late.
Gusts up to 18 knots. Mostly sunny. Waves calm to 1 foot.
.TONIGHT...West wind less than 10 knots veering northwest 10 to
15 knots by midnight. Gusts up to 22 knots. Mostly cloudy. A
slight chance of showers by midnight. A chance of showers late.
Waves calm to 1 foot.
.SUNDAY...Northwest wind 10 to 20 knots. Cloudy with a chance of
showers in the morning, then partly cloudy in the afternoon.
Waves building to 1 to 2 feet.
.SUNDAY NIGHT...Northwest wind 10 to 15 knots backing west less
than 10 knots after midnight. Gusts up to 23 knots. Partly
cloudy. 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 Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...Southwest wind less than 10 knots veering northwest
10 to 15 knots late. Mostly sunny. Waves calm to 1 foot.
.TONIGHT...Northwest wind 10 to 15 knots. Gusts up to 22 knots.
Cloudy. A slight chance of showers by midnight. A chance of
showers late. Waves building to 1 to 2 feet.
.SUNDAY...Northwest wind 15 to 20 knots. Mostly cloudy. A chance
of showers in the morning. Waves building to 2 to 4 feet, then
subsiding to 2 to 3 feet.
.SUNDAY NIGHT...Northwest wind 10 to 20 knots backing west 10 to
15 knots after midnight. Partly cloudy. Waves subsiding to 1 to
2 feet.

$$

LSZ248-182000-
Huron Islands to Marquette MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...Southwest wind less than 10 knots veering north 10 to
15 knots late. Sunny through early afternoon then becoming partly
cloudy. Waves calm to 1 foot.
.TONIGHT...Northwest wind 10 to 20 knots. Cloudy. A slight chance
of showers by midnight. A chance of showers late. Waves building
to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...Northwest wind 15 to 25 knots. Mostly cloudy. A chance
of showers in the morning, then a slight chance of showers in the
afternoon. Waves building to 5 to 8 feet occasionally to 10 feet,
then subsiding to 4 to 7 feet occasionally to 9 feet.
.SUNDAY NIGHT...Northwest wind 15 to 25 knots backing west 10 to
15 knots after midnight. Partly cloudy. Waves subsiding to 2 to
3 feet.

$$

LSZ249-182000-
Marquette to Munising MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Mostly
clear. Waves calm to 1 foot.
.TODAY...Southwest wind less than 10 knots veering north late.
Sunny. Waves calm to 1 foot.
.TONIGHT...North wind 10 to 15 knots backing northwest 15 to
25 knots by midnight. Cloudy. A slight chance of showers by
midnight. Showers likely late. Waves building to 3 to 5 feet
occasionally to 7 feet.
.SUNDAY...Northwest wind up to 30 knots. Mostly cloudy. Showers
in the morning, then a chance of showers in the afternoon. Waves
building to 7 to 10 feet occasionally to 13 feet, then subsiding
to 6 to 9 feet occasionally to 11 feet.
.SUNDAY NIGHT...Northwest wind 20 to 25 knots diminishing to
10 to 20 knots after midnight. Partly cloudy. A slight chance of
rain showers in the evening. Waves subsiding to 2 to 4 feet.

$$

LSZ250-182000-
Munising to Grand Marais MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...Southwest wind less than 10 knots. Mostly
cloudy. Waves 1 to 2 feet.
.TODAY...Southwest wind less than 10 knots veering north late.
Partly cloudy through mid morning then clearing. Waves calm to
1 foot.
.TONIGHT...Northeast wind less than 10 knots backing northwest
5 to 15 knots with gusts up to 24 knots by midnight, then
becoming north 15 to 25 knots late. Cloudy. A slight chance of
showers by midnight. Showers likely late. Waves building to 2 to
4 feet.
.SUNDAY...Northwest wind up to 30 knots. Cloudy. Showers in the
morning, then a chance of showers in the afternoon. Waves
building to 7 to 10 feet occasionally to 13 feet.
.SUNDAY NIGHT...Northwest wind up to 30 knots diminishing to
10 to 20 knots after midnight. Mostly cloudy. A chance of showers
in the evening. Waves subsiding to 3 to 5 feet occasionally to
7 feet.

$$

LSZ251-182000-
Grand Marais to Whitefish Point MI-
502 AM EDT Sat Oct 18 2025

...SMALL CRAFT ADVISORY IN EFFECT SUNDAY MORNING...
...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.EARLY THIS MORNING...Southwest wind 10 to 15 knots. Cloudy with
a chance of showers and a slight chance of thunderstorms. Waves
1 to 2 feet.
.TODAY...Southwest wind less than 10 knots veering west by late
morning, then veering northeast late. Mostly cloudy through mid
morning then becoming partly cloudy. A slight chance of showers
through mid morning. Waves 1 to 2 feet.
.TONIGHT...East wind less than 10 knots backing north with gusts
up to 22 knots by midnight, then increasing to 10 to 20 knots
late. Cloudy. A chance of showers by midnight. Waves building to
2 to 3 feet.
.SUNDAY...Northwest wind up to 30 knots. Showers. Waves building
to 7 to 10 feet occasionally to 13 feet.
.SUNDAY NIGHT...Northwest wind up to 30 knots diminishing to
15 to 20 knots after midnight. Mostly cloudy with a chance of
showers in the evening, then partly cloudy after midnight. Waves
subsiding to 3 to 5 feet occasionally to 7 feet.

$$

WFO MQT