Nearshore Marine Forecast
Issued by NWS Marquette, MI

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FZUS53 KMQT 280902
NSHMQT

Nearshore Marine Forecast
National Weather Service Marquette MI
502 AM EDT Thu Aug 28 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.

LMZ221-282000-
Green Bay North of line from Cedar River MI to Rock Island
Passage-
502 AM EDT Thu Aug 28 2025

...Small craft should exercise caution from this morning through
this evening...

.EARLY THIS MORNING...North wind 10 to 15 knots. Mostly cloudy.
Waves 1 to 2 feet.
.TODAY...North wind 15 to 20 knots. Partly cloudy through mid
morning then clearing. Waves building to 2 to 3 feet.
.TONIGHT...Northeast wind 5 to 15 knots. Mostly clear. Waves
subsiding to 1 to 2 feet.
.FRIDAY...Northeast wind less than 10 knots in the morning
becoming variable. Partly cloudy in the morning then clearing.
Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Clear. Waves
calm to 1 foot.

$$

LMZ248-250-282000-
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
502 AM EDT Thu Aug 28 2025

.EARLY THIS MORNING...North wind 10 to 15 knots. Cloudy. Waves
1 to 2 feet.
.TODAY...North wind 15 to 20 knots. Mostly sunny. Waves building
to 2 to 3 feet.
.TONIGHT...North wind 5 to 15 knots. Mostly clear. Waves
subsiding to 1 to 2 feet.
.FRIDAY...Northeast wind less than 10 knots in the morning
becoming variable. Mostly sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Clear. Waves
calm to 1 foot.

$$

LSZ240-241-282000-
Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
502 AM EDT Thu Aug 28 2025 /402 AM CDT Thu Aug 28 2025/

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT /10 AM CDT/
THIS MORNING...

.EARLY THIS MORNING...Northeast wind 10 to 15 knots. Mostly
cloudy. Patchy fog. Waves 2 to 4 feet building to 3 to 5 feet
occasionally to 7 feet.
.TODAY...Northeast wind 10 to 15 knots. Mostly sunny. Waves
subsiding to 2 to 3 feet.
.TONIGHT...East wind 10 to 15 knots veering south less than
10 knots late. Clear. Waves subsiding to 1 to 2 feet.
.FRIDAY...South wind less than 10 knots in the morning becoming
variable. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Mostly clear.
Waves calm to 1 foot.

$$

LSZ242-243-282000-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Partly
cloudy. Waves 3 to 5 feet occasionally to 7 feet.
.TODAY...Northeast wind 10 to 15 knots. Sunny. Waves subsiding to
2 to 3 feet.
.TONIGHT...East wind 10 to 15 knots veering south less than
10 knots late. Mostly clear. Waves subsiding to 1 to 2 feet.
.FRIDAY...South wind less than 10 knots in the morning becoming
variable. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Southeast wind less than 10 knots veering
southwest after midnight. Clear. Waves calm to 1 foot.

$$

LSZ245-282000-
Manitou Island to Point Isabelle MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Mostly
clear. Waves 3 to 6 feet occasionally to 8 feet.
.TODAY...Northeast wind 10 to 20 knots. Sunny through mid morning
then becoming mostly sunny. Waves subsiding to 1 to 2 feet.
.TONIGHT...Northeast wind less than 10 knots veering south late.
Clear through late evening then becoming partly cloudy. Waves
1 to 2 feet.
.FRIDAY...Southwest wind less than 10 knots in the morning
becoming variable. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Clear. Waves
calm to 1 foot.

$$

LSZ244-282000-
Eagle River to Manitou Island MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 AM EDT THIS MORNING...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Mostly
clear. Waves 3 to 6 feet occasionally to 8 feet.
.TODAY...Northeast wind 10 to 20 knots diminishing to less than
10 knots late. Mostly sunny. Waves subsiding to 1 to 2 feet.
.TONIGHT...East wind less than 10 knots veering south late. Clear
through late evening then becoming partly cloudy. Waves 1 to
2 feet.
.FRIDAY...South wind less than 10 knots in the morning becoming
variable. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...South wind less than 10 knots veering southwest
after midnight. Clear. Waves calm to 1 foot.

$$

LSZ246-282000-
Point Isabelle to Lower Entrance of Portage Canal MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.EARLY THIS MORNING...Northeast wind 10 to 15 knots. Partly
cloudy. Waves 2 to 3 feet.
.TODAY...Northeast wind 5 to 15 knots becoming 10 to 15 knots
late. Sunny. Waves subsiding to 1 to 2 feet.
.TONIGHT...East wind less than 10 knots veering southwest late.
Partly cloudy. Waves 1 to 2 feet.
.FRIDAY...Southwest wind less than 10 knots in the morning
becoming variable. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Gusts up to
12 knots. Clear. Waves calm to 1 foot.

$$

LSZ247-282000-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM EDT THIS MORNING...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Mostly
cloudy. Waves 3 to 5 feet occasionally to 7 feet.
.TODAY...Northeast wind 10 to 15 knots. Sunny. Waves subsiding to
1 to 2 feet.
.TONIGHT...East wind less than 10 knots veering southwest late.
Mostly clear. Waves 1 to 2 feet.
.FRIDAY...South wind less than 10 knots backing east in the
afternoon. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Gusts up to
12 knots. Clear. Waves calm to 1 foot.

$$

LSZ248-282000-
Huron Islands to Marquette MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Mostly
cloudy. Waves 3 to 5 feet occasionally to 7 feet building to 3 to
6 feet occasionally to 8 feet.
.TODAY...Northeast wind 10 to 15 knots. Mostly sunny. Waves
subsiding to 2 to 3 feet.
.TONIGHT...Northeast wind less than 10 knots veering southwest
late. Mostly clear through midnight then becoming mostly cloudy.
Waves subsiding to 1 to 2 feet.
.FRIDAY...South wind less than 10 knots in the morning becoming
variable. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Gusts up to
12 knots. Clear. Waves calm to 1 foot.

$$

LSZ249-282000-
Marquette to Munising MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Cloudy.
Waves 2 to 4 feet building to 3 to 5 feet occasionally to 7 feet.
.TODAY...North wind 10 to 20 knots. Partly cloudy. Waves
subsiding to 2 to 3 feet.
.TONIGHT...Northeast wind 10 to 15 knots diminishing to less than
10 knots by midnight, then becoming variable late. Mostly clear
through midnight then becoming mostly cloudy. Waves subsiding to
1 to 2 feet.
.FRIDAY...Variable wind less than 10 knots. Sunny. Waves calm to
1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Clear. Waves
calm to 1 foot.

$$

LSZ250-282000-
Munising to Grand Marais MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Cloudy.
Waves 3 to 5 feet occasionally to 7 feet building to 3 to 6 feet
occasionally to 8 feet, then subsiding to 3 to 5 feet
occasionally to 7 feet.
.TODAY...North wind 10 to 20 knots. Partly cloudy. Waves
subsiding to 2 to 3 feet.
.TONIGHT...North wind 10 to 15 knots veering east less than
10 knots late. Mostly clear. Waves subsiding to 1 to 2 feet.
.FRIDAY...Variable wind less than 10 knots. Sunny. Waves calm to
1 foot.
.FRIDAY NIGHT...Variable wind less than 10 knots. Clear. Waves
calm to 1 foot.

$$

LSZ251-282000-
Grand Marais to Whitefish Point MI-
502 AM EDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON...

.EARLY THIS MORNING...Northeast wind 15 to 20 knots. Mostly
cloudy. Waves 3 to 6 feet occasionally to 8 feet.
.TODAY...North wind 10 to 20 knots. Partly cloudy. Waves
subsiding to 2 to 3 feet.
.TONIGHT...North wind 10 to 15 knots veering northeast 5 to
15 knots by midnight. Mostly clear. Waves subsiding to 1 to
2 feet.
.FRIDAY...North wind less than 10 knots backing northwest in the
afternoon. Sunny. Waves calm to 1 foot.
.FRIDAY NIGHT...Northwest wind less than 10 knots backing
southwest after midnight. Clear. Waves calm to 1 foot.

$$

WFO MQT