Nearshore Marine Forecast
Issued by NWS Marquette, MI

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569
FZUS53 KMQT 162102
NSHMQT

Nearshore Marine Forecast
National Weather Service Marquette MI
502 PM EDT Fri May 16 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.

LMZ221-170800-
Green Bay North of line from Cedar River MI to Rock Island
Passage-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 15 to 20 knots with gusts up to
29 knots. Mostly cloudy with a chance of showers and
thunderstorms. Waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.TONIGHT...South wind 10 to 15 knots veering southwest late.
Gusts up to 25 knots. Cloudy. Showers likely and a chance of
thunderstorms through late evening, then a slight chance of
thunderstorms by midnight. A chance of showers by midnight. Waves
subsiding to 1 to 2 feet, then building to 2 to 3 feet.
.SATURDAY...West wind 10 to 15 knots veering northwest 15 to
20 knots late. Mostly cloudy. A chance of showers through mid
morning, then a slight chance of showers by late morning. Waves
subsiding to 1 to 2 feet, then building to 2 to 3 feet.
.SATURDAY NIGHT...Northwest wind 15 to 20 knots with gusts up to
27 knots. Mostly cloudy. A slight chance of rain showers in the
evening. Waves building to 2 to 4 feet, then subsiding to 2 to
3 feet.
.SUNDAY...North wind 10 to 15 knots. Mostly cloudy. Waves
subsiding to 1 to 2 feet.

$$

LMZ248-250-170800-
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT SATURDAY...

.LATE THIS AFTERNOON...South wind 15 to 20 knots with gusts up to
29 knots. Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Waves 4 to 7 feet occasionally to
9 feet.
.TONIGHT...South wind 10 to 15 knots backing southeast by
midnight, then veering southwest late. Gusts up to 24 knots.
Cloudy. Rain showers likely and a chance of thunderstorms through
late evening, then a slight chance of thunderstorms by midnight.
A chance of rain showers by midnight. Waves subsiding to 2 to
4 feet.
.SATURDAY...West wind 10 to 15 knots veering northwest 10 to
20 knots late. Mostly cloudy. A chance of showers through mid
morning, then a slight chance of showers by late morning. Waves
subsiding to 1 to 2 feet, then building to 2 to 3 feet.
.SATURDAY NIGHT...Northwest wind 15 to 20 knots with gusts up to
28 knots. Mostly cloudy with a slight chance of rain showers.
Waves building to 2 to 4 feet, then subsiding to 2 to 3 feet.
.SUNDAY...North wind 10 to 15 knots. Mostly cloudy. Waves
subsiding to 1 to 2 feet.

$$

LSZ240-170800-
Saxon Harbor WI to Black River MI-
502 PM EDT Fri May 16 2025 /402 PM CDT Fri May 16 2025/

.LATE THIS AFTERNOON...North wind less than 10 knots with gusts
up to 21 knots. Mostly cloudy with a chance of showers. Waves
calm to 1 foot.
.TONIGHT...East wind less than 10 knots through late evening
becoming variable, then becoming west less than 10 knots late.
Cloudy with a chance of rain showers. Patchy fog by midnight.
Waves calm to 1 foot.
.SATURDAY...West wind 10 to 20 knots veering northwest 10 to
15 knots late. Mostly cloudy with a chance of rain showers. Waves
building to 2 to 3 feet, then subsiding to 1 to 2 feet.
.SATURDAY NIGHT...North wind less than 10 knots veering northeast
5 to 15 knots after midnight. Cloudy with a chance of rain
showers. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 10 to 15 knots. Mostly cloudy. Waves
building to 2 to 3 feet.

$$

LSZ241-170800-
Black River to Ontonagon MI-
502 PM EDT Fri May 16 2025 /402 PM CDT Fri May 16 2025/

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT /5 PM CDT/ THIS
EVENING...

.LATE THIS AFTERNOON...Northwest wind less than 10 knots with
gusts up to 19 knots. Mostly cloudy with a chance of showers.
Waves calm to 1 foot.
.TONIGHT...East wind less than 10 knots backing northwest by
midnight, then backing west 10 to 15 knots late. Cloudy with a
chance of rain showers. Waves building to 1 to 2 feet.
.SATURDAY...West wind 15 to 20 knots diminishing to 10 to
15 knots late. A chance of rain showers through mid morning, then
rain showers likely by late morning. A chance of rain showers
late. Waves building to 2 to 4 feet, then subsiding to 2 to
3 feet.
.SATURDAY NIGHT...North wind less than 10 knots increasing to
10 to 15 knots after midnight. Cloudy. A slight chance of rain
showers in the evening, then a chance of rain showers after
midnight. Waves 2 to 3 feet.
.SUNDAY...Northeast wind 10 to 15 knots. Mostly cloudy. Waves
building to 2 to 4 feet, then subsiding to 2 to 3 feet.

$$

LSZ243-170800-
Upper Entrance of Portage Canal to Eagle River MI-
502 PM EDT Fri May 16 2025

.LATE THIS AFTERNOON...Northwest wind less than 10 knots with
gusts up to 18 knots. Mostly cloudy with a chance of showers and
a slight chance of thunderstorms. Waves calm to 1 foot.
.TONIGHT...Northwest wind 5 to 15 knots. Cloudy. A chance of rain
showers and a slight chance of thunderstorms through the night.
Patchy fog late. Waves building to 1 to 2 feet.
.SATURDAY...West wind 10 to 15 knots veering northwest by late
morning. Gusts up to 28 knots. Cloudy. Patchy fog through early
afternoon. Rain showers likely through mid morning, then a chance
of rain showers by late morning. Waves building to 3 to 6 feet
occasionally to 8 feet.
.SATURDAY NIGHT...North wind 15 to 20 knots. Cloudy with a chance
of rain showers. Waves subsiding to 2 to 4 feet.
.SUNDAY...North wind 10 to 20 knots. Mostly cloudy. Waves
subsiding to 2 to 3 feet.

$$

LSZ242-170800-
Ontonagon to Upper Entrance of Portage Canal MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...Northwest wind less than 10 knots with
gusts up to 20 knots. Mostly cloudy with a chance of showers and
a slight chance of thunderstorms. Waves calm to 1 foot.
.TONIGHT...North wind less than 10 knots backing west 5 to
15 knots late. Cloudy. A chance of rain showers and a slight
chance of thunderstorms through midnight, then a chance of rain
showers late. Patchy fog late. Waves building to 1 to 2 feet.
.SATURDAY...West wind 10 to 15 knots veering northwest by late
morning. Gusts up to 22 knots. Cloudy. Patchy fog through early
afternoon. Rain showers likely through mid morning, then a chance
of rain showers by late morning. Waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 2 to 4 feet.
.SATURDAY NIGHT...North wind 10 to 15 knots. Gusts up to
22 knots. Cloudy. A slight chance of rain showers in the evening,
then a chance of rain showers after midnight. Waves 2 to 4 feet.
.SUNDAY...Northeast wind 10 to 15 knots. Mostly cloudy. Waves
subsiding to 2 to 3 feet.

$$

LSZ244-245-170800-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 10 to 15 knots with gusts up to
26 knots. Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Waves 2 to 4 feet building to 3 to
5 feet occasionally to 7 feet.
.TONIGHT...South wind 5 to 15 knots backing southeast less than
10 knots by midnight, then veering northwest 10 to 15 knots late.
Mostly cloudy. A chance of rain showers and a slight chance of
thunderstorms through late evening, then a slight chance of rain
showers by midnight. A chance of rain showers late. Patchy fog by
midnight. Waves subsiding to 1 to 2 feet.
.SATURDAY...Northwest wind 10 to 15 knots increasing to 15 to
25 knots by late morning. Cloudy. Patchy fog through early
afternoon. Rain showers likely through mid morning, then a chance
of rain showers by late morning. Waves building to 6 to 9 feet
occasionally to 11 feet.
.SATURDAY NIGHT...Northwest wind 15 to 25 knots veering north
15 to 20 knots after midnight. Cloudy with a chance of rain
showers. Waves subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North wind 10 to 20 knots. Mostly cloudy. Waves
subsiding to 2 to 3 feet.

$$

LSZ246-170800-
Point Isabelle to Lower Entrance of Portage Canal MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 10 to 15 knots with gusts up to
26 knots. Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Waves 2 to 4 feet.
.TONIGHT...Southeast wind less than 10 knots backing northwest by
midnight, then becoming northwest less than 10 knots late. Mostly
cloudy. A chance of thunderstorms through late evening. A chance
of rain showers through the night. A slight chance of
thunderstorms by midnight. Patchy fog by midnight. Waves
subsiding to 1 to 2 feet.
.SATURDAY...Northwest wind 10 to 15 knots becoming 10 to 20 knots
by late morning. Gusts up to 29 knots. Cloudy. Patchy fog through
mid morning. Rain showers likely through mid morning, then a
chance of rain showers by late morning. Waves building to 2 to
3 feet.
.SATURDAY NIGHT...North wind 10 to 15 knots with gusts up to
28 knots. Cloudy with a chance of rain showers. Waves subsiding
to 1 to 2 feet.
.SUNDAY...North wind 5 to 15 knots with gusts up to 22 knots.
Cloudy. Waves 1 to 2 feet.

$$

LSZ247-170800-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 10 to 15 knots with gusts up to
28 knots. Mostly cloudy with a chance of showers and
thunderstorms. Waves 2 to 3 feet subsiding to 1 to 2 feet.
.TONIGHT...West wind less than 10 knots increasing to 10 to
15 knots late. Mostly cloudy. A chance of showers and
thunderstorms through late evening, then a chance of rain showers
and a slight chance of thunderstorms by midnight. Patchy fog by
midnight. Waves 1 to 2 feet.
.SATURDAY...West wind 10 to 15 knots veering northwest by late
morning. Gusts up to 24 knots. Patchy fog through mid morning.
Cloudy with a chance of rain showers. Waves building to 2 to
3 feet.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots veering north
after midnight. Gusts up to 24 knots. Cloudy with a chance of
rain showers. Waves subsiding to 1 to 2 feet.
.SUNDAY...North wind 10 to 15 knots. Cloudy. Waves building to
2 to 3 feet, then subsiding to 1 to 2 feet.

$$

LSZ248-170800-
Huron Islands to Marquette MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 10 to 20 knots with gusts up to
28 knots. Mostly cloudy with a chance of showers and
thunderstorms. Waves 2 to 3 feet.
.TONIGHT...South wind 5 to 15 knots veering west 10 to 15 knots
late. Mostly cloudy. A chance of showers and thunderstorms
through late evening, then a chance of rain showers and a slight
chance of thunderstorms by midnight. Patchy fog by midnight.
Waves subsiding to 1 to 2 feet.
.SATURDAY...Northwest wind 15 to 25 knots. Gusts up to 32 knots
in the afternoon. Patchy fog through mid morning. Rain showers
likely through mid morning, then a chance of rain showers by late
morning. Waves building to 5 to 8 feet occasionally to 10 feet.
.SATURDAY NIGHT...Northwest wind 15 to 25 knots becoming 15 to
20 knots after midnight. Gusts up to 32 knots. Cloudy with a
chance of rain showers. Waves subsiding to 3 to 6 feet
occasionally to 8 feet.
.SUNDAY...North wind 10 to 15 knots. Mostly cloudy. Waves
subsiding to 2 to 4 feet.

$$

LSZ249-170800-
Marquette to Munising MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 15 to 20 knots with gusts up to
30 knots. Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Waves 2 to 3 feet subsiding to 1 to
2 feet.
.TONIGHT...South wind 10 to 20 knots backing southeast less than
10 knots by midnight, then veering southwest 5 to 15 knots late.
A chance of showers and thunderstorms in the evening. Rain
showers likely and a slight chance of thunderstorms after
midnight. Patchy fog by midnight. Waves building to 2 to 3 feet,
then subsiding to 1 to 2 feet.
.SATURDAY...Northwest wind 10 to 15 knots with gusts up to
22 knots increasing to up to 30 knots by late morning. Cloudy.
Patchy fog through early afternoon. Rain showers likely through
mid morning, then a chance of rain showers by late morning. Waves
building to 7 to 10 feet occasionally to 13 feet.
.SATURDAY NIGHT...Northwest wind up to 30 knots diminishing to
15 to 25 knots after midnight. Cloudy with a chance of rain
showers. Waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North wind 10 to 15 knots. Mostly cloudy. Waves
subsiding to 2 to 4 feet.

$$

LSZ250-170800-
Munising to Grand Marais MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 15 to 20 knots with gusts up to
30 knots. Partly cloudy with a chance of showers and a slight
chance of thunderstorms. Waves 2 to 3 feet subsiding to 1 to
2 feet.
.TONIGHT...South wind 10 to 15 knots backing southeast less than
10 knots by midnight, then veering south 5 to 15 knots late. A
chance of rain showers through late evening. A chance of
thunderstorms through midnight. Rain showers likely by midnight.
Patchy fog by midnight. Waves 1 to 2 feet.
.SATURDAY...West wind 15 to 25 knots. Cloudy. Patchy fog through
the day. Rain showers likely through mid morning. A chance of
rain showers by late morning, then a slight chance of rain
showers late. Waves building to 6 to 9 feet occasionally to
11 feet.
.SATURDAY NIGHT...Northwest wind 15 to 25 knots veering north
15 to 20 knots after midnight. Cloudy. A chance of rain showers
in the evening, then a slight chance of rain showers after
midnight. Waves building to 8 to 11 feet occasionally to 14 feet,
then subsiding to 3 to 6 feet occasionally to 8 feet.
.SUNDAY...North wind 10 to 20 knots. Mostly cloudy. Waves
subsiding to 2 to 4 feet.

$$

LSZ251-170800-
Grand Marais to Whitefish Point MI-
502 PM EDT Fri May 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.LATE THIS AFTERNOON...South wind 15 to 20 knots with gusts up to
29 knots. Partly cloudy with a slight chance of showers. Waves
2 to 3 feet subsiding to 1 to 2 feet.
.TONIGHT...Southeast wind 10 to 15 knots becoming 5 to 15 knots
by midnight. Rain showers and a chance of thunderstorms through
the night. Patchy fog late. Waves 1 to 2 feet.
.SATURDAY...Southwest wind 10 to 15 knots veering west 10 to
20 knots by late morning. Cloudy. A chance of rain showers
through mid morning, then a slight chance of rain showers by late
morning. Patchy fog through the day. Waves building to 2 to
4 feet.
.SATURDAY NIGHT...Northwest wind 15 to 20 knots veering north
after midnight. Cloudy. Patchy fog in the evening. A chance of
rain showers in the evening, then a slight chance of rain showers
after midnight. Waves building to 5 to 8 feet occasionally to
10 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.
.SUNDAY...North wind 15 to 20 knots. Mostly cloudy. Waves
subsiding to 2 to 4 feet.

$$

WFO MQT