645
FZUS53 KMQT 170301
NSHMQT

Nearshore Marine Forecast
National Weather Service Marquette MI
1101 PM EDT Thu Oct 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-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 20 knots. Showers. Waves 1 to
2 feet building to 2 to 4 feet.
.FRIDAY...South wind 15 to 25 knots with gusts up to 33 knots.
Cloudy. A slight chance of showers through mid morning. Waves
building to 3 to 6 feet occasionally to 8 feet.
.FRIDAY NIGHT...Southwest wind 15 to 25 knots. Mostly cloudy.
Showers likely and a slight chance of thunderstorms in the
evening, then a chance of showers and a slight chance of
thunderstorms after midnight. Waves subsiding to 2 to 4 feet.
.SATURDAY...Southwest wind less than 10 knots. Partly cloudy with
a chance of showers and a slight chance of thunderstorms. 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-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 20 knots. Showers. Waves 1 to
2 feet building to 2 to 4 feet.
.FRIDAY...South wind 20 to 25 knots with gusts up to 33 knots.
Cloudy. A slight chance of showers through mid morning. Waves
building to 7 to 10 feet occasionally to 13 feet.
.FRIDAY NIGHT...South wind 20 to 25 knots veering southwest 10 to
20 knots after midnight. Gusts up to 33 knots. Showers and a
slight chance of thunderstorms. Waves subsiding to 4 to 7 feet
occasionally to 9 feet.
.SATURDAY...Southwest wind 5 to 15 knots. Mostly cloudy with a
chance of showers and a slight chance of thunderstorms. Waves
subsiding to 2 to 4 feet.

$$

LSZ240-170800-
Saxon Harbor WI to Black River MI-
1101 PM EDT Thu Oct 16 2025 /1001 PM CDT Thu Oct 16 2025/

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 20 knots. Cloudy. A chance of
showers and a slight chance of thunderstorms by midnight, then a
slight chance of showers late. Waves 1 to 2 feet.
.FRIDAY...South wind 10 to 20 knots veering southwest 10 to
15 knots late. Mostly cloudy. A slight chance of showers through
mid morning, then a chance of showers by late morning. Waves
building to 2 to 3 feet, then subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots with gusts up to
22 knots. Mostly clear. A slight chance of showers in the
evening. Waves 1 to 2 feet.
.SATURDAY...Southwest wind less than 10 knots veering northwest
in the afternoon. Partly cloudy. Waves calm to 1 foot.

$$

LSZ241-170800-
Black River to Ontonagon MI-
1101 PM EDT Thu Oct 16 2025 /1001 PM CDT Thu Oct 16 2025/

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT /7 AM CDT/ FRIDAY
THROUGH FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 20 knots. Cloudy. A chance of
showers and a slight chance of thunderstorms by midnight, then a
slight chance of showers late. Waves 1 to 2 feet.
.FRIDAY...South wind 10 to 20 knots veering southwest 10 to
15 knots late. Mostly cloudy. A slight chance of showers through
early afternoon, then a chance of showers late. Waves building to
2 to 3 feet, then subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots with gusts up to
22 knots. Mostly clear. A slight chance of showers in the
evening. Waves building to 2 to 3 feet, then subsiding to 1 to
2 feet.
.SATURDAY...Southwest wind 10 to 15 knots veering west in the
afternoon. Mostly sunny. Waves 1 to 2 feet.

$$

LSZ242-243-170800-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 15 knots. Cloudy with a
chance of showers. Waves calm to 1 foot building to 1 to 2 feet.
.FRIDAY...South wind 10 to 15 knots veering southwest late.
Mostly cloudy. A slight chance of showers through early
afternoon, then a chance of showers late. Waves 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 20 knots. Partly cloudy. A
chance of showers in the evening. Waves building to 2 to 4 feet.
.SATURDAY...Southwest wind 10 to 15 knots veering west in the
afternoon. Gusts up to 24 knots. Mostly sunny. Waves subsiding to
2 to 3 feet.

$$

LSZ244-245-170800-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT FRIDAY...

.REST OF TONIGHT...South wind 10 to 20 knots. Cloudy with a
chance of showers. Waves 3 to 5 feet occasionally to 7 feet
subsiding to 2 to 4 feet.
.FRIDAY...South wind 10 to 20 knots. Mostly cloudy. A slight
chance of showers through early afternoon, then a chance of
showers late. Waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet.
.FRIDAY NIGHT...Southwest wind 10 to 20 knots becoming 10 to
15 knots after midnight. Mostly cloudy with a chance of showers
and a slight chance of thunderstorms in the evening, then mostly
clear after midnight. Waves subsiding to 2 to 3 feet, then
building to 2 to 4 feet.
.SATURDAY...West wind 10 to 15 knots. Gusts up to 23 knots.
Mostly sunny. Waves subsiding to 2 to 3 feet.

$$

LSZ246-170800-
Point Isabelle to Lower Entrance of Portage Canal MI-
1101 PM EDT Thu Oct 16 2025

.REST OF TONIGHT...South wind less than 10 knots with gusts up to
18 knots. Cloudy with a chance of showers. Waves 2 to 4 feet
subsiding to 2 to 3 feet.
.FRIDAY...South wind 10 to 15 knots with gusts up to 22 knots.
Mostly cloudy. A slight chance of showers through mid morning. A
chance of showers late. Waves subsiding to 1 to 2 feet, then
building to 2 to 3 feet.
.FRIDAY NIGHT...Southwest wind 5 to 15 knots with gusts up to
23 knots. Mostly cloudy with a chance of showers in the evening,
then mostly clear after midnight. Waves subsiding to 1 to 2 feet.
.SATURDAY...West wind less than 10 knots. Gusts up to 22 knots.
Mostly sunny. Waves calm to 1 foot.

$$

LSZ247-170800-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 5 to 15 knots. Cloudy with a chance
of showers. Waves 1 to 2 feet.
.FRIDAY...South wind 10 to 15 knots with gusts up to 26 knots.
Mostly cloudy. A slight chance of showers through mid morning. A
chance of showers late. Waves building to 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 5 to 15 knots with gusts up to
23 knots. Partly cloudy. A chance of showers in the evening.
Waves 1 to 2 feet.
.SATURDAY...Southwest wind less than 10 knots veering northwest
in the afternoon. Gusts up to 21 knots. Mostly sunny. Waves calm
to 1 foot.

$$

LSZ248-170800-
Huron Islands to Marquette MI-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH
FRIDAY AFTERNOON...

.REST OF TONIGHT...South wind 10 to 20 knots. Showers likely and
a slight chance of thunderstorms by midnight, then a chance of
showers and a slight chance of thunderstorms late. Waves 2 to
3 feet subsiding to 1 to 2 feet, then building to 2 to 3 feet.
.FRIDAY...South wind 10 to 20 knots. Mostly cloudy. A slight
chance of showers through mid morning. A chance of showers and a
slight chance of thunderstorms late. Waves subsiding to 1 to
2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots diminishing to less
than 10 knots after midnight. Gusts up to 23 knots. Partly
cloudy. Showers likely and a slight chance of thunderstorms in
the evening, then a slight chance of showers after midnight.
Waves building to 2 to 3 feet, then subsiding to 1 to 2 feet.
.SATURDAY...Southwest wind less than 10 knots veering northwest
in the afternoon. Gusts up to 21 knots. Mostly sunny. A slight
chance of showers in the afternoon. Waves calm to 1 foot.

$$

LSZ249-170800-
Marquette to Munising MI-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 20 knots. Showers and a
slight chance of thunderstorms. Waves 1 to 2 feet building to
2 to 3 feet.
.FRIDAY...South wind 15 to 20 knots with gusts up to 27 knots.
Mostly cloudy. A slight chance of showers through early
afternoon, then a chance of showers and a slight chance of
thunderstorms late. Waves building to 2 to 4 feet, then subsiding
to 2 to 3 feet.
.FRIDAY NIGHT...South wind 10 to 20 knots. Mostly cloudy with
showers and a slight chance of thunderstorms in the evening, then
partly cloudy with a chance of showers and a slight chance of
thunderstorms after midnight. Waves subsiding to 1 to 2 feet.
.SATURDAY...Southwest wind less than 10 knots veering north in
the afternoon. Mostly sunny. A slight chance of showers in the
morning, then a chance of showers in the afternoon. Waves calm to
1 foot.

$$

LSZ250-170800-
Munising to Grand Marais MI-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 15 to 20 knots. Showers. Waves 1 to
2 feet building to 2 to 3 feet.
.FRIDAY...South wind 15 to 25 knots. Cloudy. A chance of showers
through mid morning, then a slight chance of showers by late
morning. A chance of showers late. Waves building to 2 to 4 feet,
then subsiding to 2 to 3 feet.
.FRIDAY NIGHT...South wind 10 to 20 knots with gusts up to
28 knots. Mostly cloudy with showers and a slight chance of
thunderstorms in the evening, then partly cloudy with a chance of
showers and a slight chance of thunderstorms after midnight.
Waves subsiding to 1 to 2 feet.
.SATURDAY...Southwest wind 10 to 15 knots veering north less than
10 knots in the afternoon. Mostly sunny. A chance of showers and
a slight chance of thunderstorms in the morning, then a chance of
showers in the afternoon. Waves 1 to 2 feet.

$$

LSZ251-170800-
Grand Marais to Whitefish Point MI-
1101 PM EDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM EDT FRIDAY THROUGH
FRIDAY EVENING...

.REST OF TONIGHT...South wind 10 to 20 knots. Showers. Waves calm
to 1 foot building to 2 to 4 feet.
.FRIDAY...South wind 15 to 20 knots with gusts up to 32 knots.
Cloudy. A chance of showers through mid morning, then a slight
chance of showers by late morning. Waves 2 to 4 feet.
.FRIDAY NIGHT...South wind 10 to 20 knots with gusts up to
27 knots. Showers and a slight chance of thunderstorms. Waves
subsiding to 1 to 2 feet.
.SATURDAY...Southwest wind 5 to 15 knots. Partly cloudy. A chance
of showers and a slight chance of thunderstorms in the morning,
then a chance of showers in the afternoon. Waves 1 to 2 feet.

$$

WFO MQT