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FZUS53 KMQT 220301
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Nearshore Marine Forecast
National Weather Service Marquette MI
1101 PM EDT Thu Aug 21 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.

LMZ221-220800-
Green Bay North of line from Cedar River MI to Rock Island
Passage-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...Southwest wind 5 to 15 knots. Mostly clear.
Waves calm to 1 foot.
.FRIDAY...Southwest wind 10 to 15 knots. Partly cloudy. A slight
chance of showers and thunderstorms late. Waves building to 2 to
3 feet, then subsiding to 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots veering west after
midnight. Cloudy with a chance of showers and thunderstorms in
the evening, then mostly clear with a chance of showers and a
slight chance of thunderstorms after midnight. Waves 1 to 2 feet.
.SATURDAY...West wind 10 to 15 knots. Sunny. A slight chance of
showers and thunderstorms in the afternoon. Waves 1 to 2 feet.

$$

LMZ248-250-220800-
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...Southwest wind 5 to 15 knots. Mostly clear.
Waves calm to 1 foot.
.FRIDAY...Southwest wind 10 to 15 knots. Partly cloudy. A slight
chance of showers late. Waves building to 2 to 3 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots veering west after
midnight. Cloudy with showers likely and a chance of
thunderstorms in the evening, then partly cloudy with a chance of
showers and thunderstorms after midnight. Waves subsiding to 1 to
2 feet.
.SATURDAY...West wind 10 to 15 knots. Mostly sunny. A chance of
showers and a slight chance of thunderstorms in the afternoon.
Waves 1 to 2 feet.

$$

LSZ240-241-220800-
Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
1101 PM EDT Thu Aug 21 2025 /1001 PM CDT Thu Aug 21 2025/

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Mostly cloudy
with a slight chance of showers and thunderstorms. Waves calm to
1 foot building to 1 to 2 feet.
.FRIDAY...Southwest wind 10 to 15 knots veering west by late
morning, then backing southwest late. Mostly cloudy. A chance of
showers and thunderstorms by late morning. Waves 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 5 to 15 knots veering west 15 to
20 knots after midnight. Mostly clear. Waves building to 2 to
4 feet.
.SATURDAY...West wind 15 to 20 knots with gusts up to 27 knots.
Mostly sunny. Waves building to 3 to 6 feet occasionally to
8 feet, then subsiding to 3 to 5 feet occasionally to 7 feet.

$$

LSZ242-243-220800-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
1101 PM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE FRIDAY NIGHT THROUGH
MONDAY AFTERNOON...

.REST OF TONIGHT...South wind 10 to 15 knots veering southwest
late. Mostly cloudy. A slight chance of showers and thunderstorms
late. Waves calm to 1 foot building to 1 to 2 feet.
.FRIDAY...Southwest wind 10 to 15 knots. Mostly cloudy. A chance
of showers and thunderstorms 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 veering west 15 to
20 knots after midnight. Mostly clear. Waves building to 2 to
4 feet.
.SATURDAY...West wind 15 to 25 knots. Mostly sunny. Waves
building to 4 to 7 feet occasionally to 9 feet.

$$

LSZ244-245-220800-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...South wind less than 10 knots veering
southwest 10 to 15 knots late. Mostly cloudy. A slight chance of
showers and thunderstorms late. Waves calm to 1 foot building to
1 to 2 feet.
.FRIDAY...West wind 10 to 15 knots. Partly cloudy. A chance of
showers and a slight chance of thunderstorms by late morning. A
chance of showers and thunderstorms late. Waves building to 2 to
3 feet, then subsiding to 1 to 2 feet.
.FRIDAY NIGHT...West wind 10 to 20 knots. Mostly clear. A slight
chance of showers and thunderstorms in the evening. Waves
building to 2 to 4 feet.
.SATURDAY...West wind 15 to 25 knots. Mostly sunny. Waves
building to 3 to 6 feet occasionally to 8 feet.

$$

LSZ246-220800-
Point Isabelle to Lower Entrance of Portage Canal MI-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...South wind less than 10 knots veering
southwest 5 to 15 knots late. Mostly cloudy. Waves calm to
1 foot.
.FRIDAY...West wind 5 to 15 knots. Partly cloudy. A chance of
showers and thunderstorms by late morning. Waves calm to 1 foot.
.FRIDAY NIGHT...West wind 5 to 15 knots. Partly cloudy with a
slight chance of showers and thunderstorms in the evening, then
clear after midnight. Waves calm to 1 foot.
.SATURDAY...West wind 10 to 20 knots with gusts up to 27 knots.
Mostly sunny. Waves building to 1 to 2 feet.

$$

LSZ247-220800-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...Southwest wind 5 to 15 knots. Mostly cloudy.
Waves calm to 1 foot.
.FRIDAY...Southwest wind 10 to 15 knots veering west less than
10 knots by late morning. Partly cloudy. A chance of showers and
thunderstorms by late morning. Showers likely and a chance of
thunderstorms late. Waves building to 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 5 to 15 knots. Mostly clear. A
slight chance of showers and thunderstorms in the evening. Waves
calm to 1 foot.
.SATURDAY...West wind 15 to 20 knots with gusts up to 27 knots.
Mostly sunny. Waves building to 2 to 3 feet.

$$

LSZ248-220800-
Huron Islands to Marquette MI-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...Southwest wind less than 10 knots. Mostly
cloudy. Waves calm to 1 foot.
.FRIDAY...Southwest wind less than 10 knots veering northwest by
late morning. Gusts up to 17 knots. Partly cloudy. A slight
chance of showers and thunderstorms by late morning. A chance of
showers and thunderstorms late. Waves building to 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 5 to 15 knots with gusts up to
22 knots. Partly cloudy with a chance of showers and a slight
chance of thunderstorms in the evening, then clear after
midnight. Waves calm to 1 foot.
.SATURDAY...West wind 15 to 20 knots with gusts up to 27 knots.
Mostly sunny. Waves building to 2 to 4 feet.

$$

LSZ249-220800-
Marquette to Munising MI-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...Southwest wind less than 10 knots. Partly
cloudy by midnight then becoming mostly cloudy. Waves calm to
1 foot.
.FRIDAY...Southwest wind less than 10 knots veering north late.
Partly cloudy. A chance of showers and a slight chance of
thunderstorms late. Waves calm to 1 foot.
.FRIDAY NIGHT...Southwest wind 5 to 15 knots. Mostly cloudy with
a chance of showers and thunderstorms in the evening, then clear
with a slight chance of showers after midnight. Waves building to
1 to 2 feet.
.SATURDAY...Northwest wind 10 to 20 knots. Sunny. A slight chance
of showers and thunderstorms in the afternoon. Waves building to
2 to 4 feet.

$$

LSZ250-220800-
Munising to Grand Marais MI-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...South wind 5 to 15 knots. Partly cloudy by
midnight then becoming mostly cloudy. Waves calm to 1 foot.
.FRIDAY...Southwest wind 10 to 15 knots diminishing to less than
10 knots by late morning. Partly cloudy. A chance of showers and
a slight chance of thunderstorms late. Waves calm to 1 foot.
.FRIDAY NIGHT...Southwest wind less than 10 knots becoming 5 to
15 knots after midnight. Mostly cloudy with a chance of showers
and thunderstorms in the evening, then mostly clear with a slight
chance of showers and thunderstorms after midnight. Waves
building to 1 to 2 feet.
.SATURDAY...West wind 10 to 20 knots. Sunny. A slight chance of
showers and thunderstorms in the afternoon. Waves building to
2 to 4 feet.

$$

LSZ251-220800-
Grand Marais to Whitefish Point MI-
1101 PM EDT Thu Aug 21 2025

.REST OF TONIGHT...South wind less than 10 knots. Partly cloudy
by midnight then becoming mostly cloudy. Waves calm to 1 foot.
.FRIDAY...Southwest wind less than 10 knots veering west by late
morning, then backing southwest late. Partly cloudy. A chance of
showers and a slight chance of thunderstorms late. Waves calm to
1 foot.
.FRIDAY NIGHT...Southwest wind less than 10 knots. Cloudy with
showers likely and a chance of thunderstorms in the evening, then
partly cloudy with a chance of showers and a slight chance of
thunderstorms after midnight. Waves calm to 1 foot.
.SATURDAY...West wind 10 to 15 knots. Mostly sunny with a slight
chance of showers and thunderstorms. Waves building to 2 to
4 feet.

$$

WFO MQT