Nearshore Marine Forecast
Issued by NWS Marquette, MI

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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