750
FZUS53 KMQT 181501
NSHMQT

Nearshore Marine Forecast
National Weather Service Marquette MI
1101 AM EDT Mon Aug 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-
1101 AM EDT Mon Aug 18 2025

.REST OF TODAY...Southeast wind 10 to 15 knots. Cloudy. A chance
of showers by late morning, then a chance of showers and a slight
chance of thunderstorms late. Waves 2 to 3 feet subsiding to 1 to
2 feet.
.TONIGHT...Southeast wind 5 to 15 knots. Showers likely and a
chance of thunderstorms through late evening, then a chance of
showers and a slight chance of thunderstorms by midnight. Waves
1 to 2 feet.
.TUESDAY...Northwest wind less than 10 knots veering north 10 to
15 knots in the afternoon. Mostly cloudy with a slight chance of
showers. Waves 1 to 2 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Partly cloudy. Waves
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-
1101 AM EDT Mon Aug 18 2025

.REST OF TODAY...Southeast wind 10 to 15 knots. Cloudy. A slight
chance of showers by late morning, then a chance of showers and a
slight chance of thunderstorms late. Waves 2 to 3 feet subsiding
to 1 to 2 feet.
.TONIGHT...Southeast wind 10 to 15 knots. Showers likely and a
chance of thunderstorms. Waves building to 2 to 3 feet, then
subsiding to 1 to 2 feet.
.TUESDAY...Southwest wind 10 to 15 knots veering northwest in the
afternoon. Mostly cloudy. A chance of showers in the morning,
then a slight chance of showers in the afternoon. Waves 1 to
2 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy in the
evening then becoming partly cloudy. Waves 1 to 2 feet.

$$

LSZ240-241-182000-
Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
1101 AM EDT Mon Aug 18 2025 /1001 AM CDT Mon Aug 18 2025/

.REST OF TODAY...Southeast wind less than 10 knots with gusts up
to 17 knots. Cloudy. Showers likely and a slight chance of
thunderstorms by late morning, then a chance of showers and
thunderstorms late. Waves calm to 1 foot.
.TONIGHT...South wind less than 10 knots through late evening
becoming variable. Cloudy. A chance of showers through late
evening, then a slight chance of showers by midnight. Waves calm
to 1 foot.
.TUESDAY...Northwest wind 10 to 15 knots veering north less than
10 knots in the afternoon. Mostly cloudy. Waves building to 1 to
2 feet.
.TUESDAY NIGHT...Variable wind less than 10 knots. Mostly clear.
Waves 1 to 2 feet.

$$

LSZ243-182000-
Upper Entrance of Portage Canal to Eagle River MI-
1101 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TODAY...Southeast wind 10 to 15 knots. Showers likely
and a slight chance of thunderstorms. Waves calm to 1 foot.
.TONIGHT...Southeast wind less than 10 knots veering south late.
Gusts up to 18 knots. Cloudy. A slight chance of thunderstorms
through late evening. A chance of showers through midnight, then
a slight chance of showers late. Waves calm to 1 foot.
.TUESDAY...North wind 10 to 15 knots. Mostly cloudy. Waves
building to 1 to 2 feet.
.TUESDAY NIGHT...North wind less than 10 knots. Mostly clear.
Waves 1 to 2 feet.

$$

LSZ242-182000-
Ontonagon to Upper Entrance of Portage Canal MI-
1101 AM EDT Mon Aug 18 2025

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

.REST OF TODAY...Southeast wind less than 10 knots with gusts up
to 18 knots. Showers likely and a slight chance of thunderstorms
by late morning, then a chance of showers and a slight chance of
thunderstorms late. Waves calm to 1 foot.
.TONIGHT...South wind less than 10 knots through midnight
becoming variable. Cloudy. A slight chance of thunderstorms
through late evening. A chance of showers through midnight, then
a slight chance of showers late. Waves calm to 1 foot.
.TUESDAY...Northwest wind 10 to 15 knots veering north 5 to
15 knots in the afternoon. Mostly cloudy. Waves building to 1 to
2 feet.
.TUESDAY NIGHT...North wind less than 10 knots. Mostly clear.
Waves 1 to 2 feet.

$$

LSZ244-245-182000-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
1101 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TODAY...Southeast wind 15 to 20 knots. Showers likely by
late morning, then showers likely and a slight chance of
thunderstorms late. Waves 3 to 5 feet occasionally to 7 feet
subsiding to 2 to 4 feet.
.TONIGHT...South wind 10 to 20 knots. Cloudy. A slight chance of
thunderstorms through late evening. A chance of showers through
midnight, then a slight chance of showers late. Waves subsiding
to 1 to 2 feet.
.TUESDAY...North wind 10 to 15 knots with gusts up to 22 knots.
Mostly cloudy. Waves building to 2 to 3 feet, then subsiding to
1 to 2 feet.
.TUESDAY NIGHT...North wind less than 10 knots. Mostly clear.
Waves 1 to 2 feet.

$$

LSZ246-182000-
Point Isabelle to Lower Entrance of Portage Canal MI-
1101 AM EDT Mon Aug 18 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM EDT THIS EVENING...

.REST OF TODAY...Southeast wind 10 to 15 knots with gusts up to
22 knots. Showers likely and a slight chance of thunderstorms.
Waves 2 to 4 feet.
.TONIGHT...Southeast wind 5 to 15 knots. Cloudy. A chance of
showers through midnight, then a slight chance of showers late.
Waves subsiding to 1 to 2 feet.
.TUESDAY...Northwest wind less than 10 knots veering north in the
afternoon. Gusts up to 21 knots. Mostly cloudy. Waves 1 to
2 feet.
.TUESDAY NIGHT...North wind less than 10 knots. Partly cloudy.
Waves calm to 1 foot.

$$

LSZ247-182000-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
1101 AM EDT Mon Aug 18 2025

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

.REST OF TODAY...Southeast wind less than 10 knots with gusts up
to 19 knots. Showers likely and a slight chance of thunderstorms
by late morning, then a chance of showers and a slight chance of
thunderstorms late. Waves 1 to 2 feet.
.TONIGHT...Southeast wind less than 10 knots through midnight
becoming variable. Gusts up to 17 knots. Cloudy. A chance of
showers through midnight, then a slight chance of showers late.
Waves 1 to 2 feet.
.TUESDAY...Northwest wind less than 10 knots veering north in the
afternoon. Gusts up to 22 knots. Mostly cloudy. Waves calm to
1 foot.
.TUESDAY NIGHT...North wind less than 10 knots. Partly cloudy.
Waves calm to 1 foot.

$$

LSZ248-182000-
Huron Islands to Marquette MI-
1101 AM EDT Mon Aug 18 2025

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

.REST OF TODAY...Southeast wind 10 to 15 knots. Cloudy. A chance
of showers and a slight chance of thunderstorms by late morning,
then showers likely and a slight chance of thunderstorms late.
Waves 2 to 3 feet subsiding to 1 to 2 feet.
.TONIGHT...Southeast wind 5 to 15 knots. Cloudy. A chance of
showers and a slight chance of thunderstorms through late
evening, then a chance of showers by midnight. Waves 1 to 2 feet.
.TUESDAY...Northwest wind 5 to 15 knots veering north 10 to
15 knots in the afternoon. Gusts up to 22 knots. Mostly cloudy.
Waves building to 1 to 2 feet.
.TUESDAY NIGHT...North wind less than 10 knots with gusts up to
17 knots. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 to 2 feet.

$$

LSZ249-182000-
Marquette to Munising MI-
1101 AM EDT Mon Aug 18 2025

.REST OF TODAY...Southeast wind 10 to 15 knots. Cloudy with a
chance of showers and a slight chance of thunderstorms. Waves
1 to 2 feet.
.TONIGHT...Southeast wind less than 10 knots with gusts up to
17 knots. Cloudy. A chance of showers and a slight chance of
thunderstorms through midnight, then a chance of showers late.
Waves calm to 1 foot.
.TUESDAY...Northwest wind 5 to 15 knots becoming 10 to 15 knots
in the afternoon. Gusts up to 22 knots. Mostly cloudy. A slight
chance of showers in the morning. Waves building to 2 to 3 feet.
.TUESDAY NIGHT...North wind 5 to 15 knots. Mostly cloudy in the
evening then becoming partly cloudy. Waves subsiding to 1 to
2 feet.

$$

LSZ250-182000-
Munising to Grand Marais MI-
1101 AM EDT Mon Aug 18 2025

.REST OF TODAY...Southeast wind 10 to 15 knots. Cloudy with a
chance of showers. Waves 1 to 2 feet.
.TONIGHT...Southeast wind 5 to 15 knots. Cloudy. A chance of
showers and a slight chance of thunderstorms through midnight,
then a chance of showers late. Waves building to 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots veering northwest in the
afternoon. Mostly cloudy. A slight chance of showers in the
morning. Waves building to 2 to 3 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy in the
evening then becoming partly cloudy. Waves subsiding to 1 to
2 feet.

$$

LSZ251-182000-
Grand Marais to Whitefish Point MI-
1101 AM EDT Mon Aug 18 2025

.REST OF TODAY...Southeast wind 10 to 20 knots. Mostly cloudy. A
slight chance of showers by late morning, then a chance of
showers late. Waves 2 to 3 feet subsiding to 1 to 2 feet.
.TONIGHT...Southeast wind 10 to 20 knots. Cloudy with a chance of
showers and a slight chance of thunderstorms. Waves building to
2 to 3 feet, then subsiding to 1 to 2 feet.
.TUESDAY...South wind 10 to 15 knots veering northwest in the
afternoon. Cloudy. A chance of showers in the morning, then a
slight chance of showers in the afternoon. Waves building to 2 to
3 feet.
.TUESDAY NIGHT...North wind 10 to 15 knots. Mostly cloudy. Waves
subsiding to 1 to 2 feet.

$$

WFO MQT