Nearshore Marine Forecast
Issued by NWS Marquette, MI

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FZUS53 KMQT 170901
NSHMQT

Nearshore Marine Forecast
National Weather Service Marquette MI
501 AM EDT Mon Aug 17 2026

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.

LMZ221-172000-
Green Bay North of line from Cedar River MI to Rock Island
Passage-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...Northwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...Northwest wind less than 10 knots backing southwest by
late morning, then backing south 10 to 15 knots late. Mostly
sunny. Waves calm to 1 foot.
.TONIGHT...South wind 10 to 15 knots veering west late. Mostly
clear through midnight then becoming mostly cloudy. A slight
chance of showers by midnight. A chance of showers and a slight
chance of thunderstorms late. Waves calm to 1 foot.
.TUESDAY...West wind 10 to 15 knots veering northwest less than
10 knots in the afternoon. Partly cloudy. A slight chance of
showers and thunderstorms in the morning, then showers likely and
a chance of thunderstorms in the afternoon. Waves building to
1 to 2 feet.
.TUESDAY NIGHT...North wind less than 10 knots backing northwest
after midnight. Partly cloudy in the evening then clearing. Waves
calm to 1 foot.

$$

LMZ248-250-172000-
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...Northwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...Northwest wind less than 10 knots backing south 10 to
15 knots late. Mostly sunny. Waves calm to 1 foot.
.TONIGHT...Southwest wind 10 to 15 knots. Mostly clear through
midnight then becoming mostly cloudy. A slight chance of showers
by midnight. A chance of showers and a slight chance of
thunderstorms late. Waves building to 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots veering northwest less than
10 knots in the afternoon. Partly cloudy. A slight chance of
showers and thunderstorms in the morning, then showers likely and
a chance of thunderstorms in the afternoon. Waves 1 to 2 feet.
.TUESDAY NIGHT...North wind less than 10 knots backing northwest
after midnight. Partly cloudy with a slight chance of showers in
the evening, then clear after midnight. Waves calm to 1 foot.

$$

LSZ240-241-172000-
Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
501 AM EDT Mon Aug 17 2026 /401 AM CDT Mon Aug 17 2026/

.EARLY THIS MORNING...Southwest wind less than 10 knots. Clear.
Waves calm to 1 foot.
.TODAY...West wind 5 to 15 knots backing southwest less than
10 knots late. Sunny. A slight chance of showers late. Waves calm
to 1 foot.
.TONIGHT...Southwest wind 5 to 15 knots veering west 10 to
15 knots late. Partly cloudy then becoming mostly cloudy by
midnight then becoming partly cloudy. A chance of showers and a
slight chance of thunderstorms through midnight, then a slight
chance of showers late. Waves building to 1 to 2 feet.
.TUESDAY...Northwest wind 10 to 15 knots backing west 5 to
15 knots in the afternoon. Partly cloudy. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind less than 10 knots. Clear. Waves calm
to 1 foot.

$$

LSZ242-243-172000-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...Southwest wind less than 10 knots. Mostly
clear. Waves 1 to 2 feet.
.TODAY...Southwest wind 10 to 15 knots. Sunny. Waves building to
1 to 2 feet.
.TONIGHT...Southwest wind less than 10 knots veering west 10 to
15 knots late. Gusts up to 22 knots. Partly cloudy through late
evening then becoming mostly cloudy. A chance of showers and a
slight chance of thunderstorms through midnight, then a slight
chance of showers late. Waves building to 2 to 3 feet.
.TUESDAY...Northwest wind 10 to 15 knots backing west in the
afternoon. Gusts up to 24 knots. Mostly sunny. Waves subsiding to
1 to 2 feet.
.TUESDAY NIGHT...West wind 10 to 15 knots veering northwest less
than 10 knots after midnight. Gusts up to 23 knots. Clear. Waves
1 to 2 feet.

$$

LSZ244-245-172000-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...West wind less than 10 knots. Mostly clear.
Waves 1 to 2 feet.
.TODAY...West wind 5 to 15 knots backing southwest late. Sunny.
Waves building to 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots veering west late.
Partly cloudy then becoming mostly cloudy by midnight then
becoming partly cloudy. A chance of showers through midnight,
then a slight chance of showers late. Waves 1 to 2 feet.
.TUESDAY...Northwest wind 10 to 15 knots backing west in the
afternoon. Gusts up to 23 knots. Mostly sunny. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 10 to 15 knots veering northwest less
than 10 knots after midnight. Mostly clear. Waves 1 to 2 feet.

$$

LSZ246-172000-
Point Isabelle to Lower Entrance of Portage Canal MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...West wind less than 10 knots. Mostly clear.
Waves calm to 1 foot.
.TODAY...West wind less than 10 knots with gusts up to 18 knots.
Sunny. Waves calm to 1 foot.
.TONIGHT...Southwest wind less than 10 knots veering west 10 to
15 knots late. Mostly clear with a chance of showers through late
evening, then mostly cloudy with a slight chance of showers by
midnight. Waves calm to 1 foot.
.TUESDAY...West wind 10 to 15 knots. Mostly sunny. A slight
chance of showers in the morning. Waves calm to 1 foot.
.TUESDAY NIGHT...West wind less than 10 knots. Gusts up to
18 knots. Mostly clear. Waves calm to 1 foot.

$$

LSZ247-172000-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...Southwest wind less than 10 knots. Mostly
clear. Waves calm to 1 foot.
.TODAY...Southwest wind less than 10 knots veering west by late
morning. Sunny. Waves calm to 1 foot.
.TONIGHT...Southwest wind 5 to 15 knots veering west 10 to
15 knots late. Gusts up to 22 knots. Mostly clear then becoming
mostly cloudy by midnight then becoming partly cloudy. A slight
chance of showers. Waves building to 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots with gusts up to 23 knots.
Partly cloudy. A slight chance of showers in the morning. Waves
1 to 2 feet.
.TUESDAY NIGHT...West wind less than 10 knots with gusts up to
18 knots. Mostly clear. Waves 1 to 2 feet.

$$

LSZ248-172000-
Huron Islands to Marquette MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...West wind less than 10 knots. Clear. Waves
calm to 1 foot.
.TODAY...West wind less than 10 knots veering northwest by late
morning, then veering southeast late. Sunny. Waves calm to
1 foot.
.TONIGHT...South wind less than 10 knots veering west 10 to
15 knots late. Gusts up to 23 knots. Clear through late evening
then becoming mostly cloudy. A slight chance of showers. Waves
building to 1 to 2 feet.
.TUESDAY...Northwest wind 10 to 20 knots. Partly cloudy with a
slight chance of showers and thunderstorms. Waves building to
2 to 3 feet, then subsiding to 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 15 knots. Clear. Waves 1 to
2 feet.

$$

LSZ249-172000-
Marquette to Munising MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...West wind less than 10 knots. Clear. Waves
1 to 2 feet.
.TODAY...Northwest wind less than 10 knots veering east late.
Mostly sunny. Waves 1 to 2 feet.
.TONIGHT...South wind less than 10 knots veering southwest late.
Clear through late evening, then partly cloudy with a chance of
showers by midnight. Mostly cloudy with a chance of showers and a
slight chance of thunderstorms late. Waves calm to 1 foot.
.TUESDAY...Northwest wind 10 to 15 knots becoming 10 to 20 knots
in the afternoon. Mostly sunny 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 NIGHT...West wind 5 to 15 knots. Clear. Waves 1 to
2 feet.

$$

LSZ250-172000-
Munising to Grand Marais MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...West wind less than 10 knots. Clear. Waves
1 to 2 feet.
.TODAY...West wind less than 10 knots through early afternoon
becoming variable. Mostly sunny. Waves 1 to 2 feet.
.TONIGHT...South wind 5 to 15 knots veering southwest 10 to
15 knots late. Clear then becoming partly cloudy by midnight then
becoming mostly cloudy. A chance of showers by midnight. A chance
of showers and a slight chance of thunderstorms late. Waves
building to 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots veering northwest 5 to
15 knots in the afternoon. Partly cloudy. A chance of showers and
a slight chance of thunderstorms in the morning, then a slight
chance of showers and thunderstorms in the afternoon. Waves
building to 2 to 3 feet, then subsiding to 1 to 2 feet.
.TUESDAY NIGHT...West wind less than 10 knots. Mostly clear.
Waves 1 to 2 feet.

$$

LSZ251-172000-
Grand Marais to Whitefish Point MI-
501 AM EDT Mon Aug 17 2026

.EARLY THIS MORNING...West wind less than 10 knots. Clear. Waves
2 to 3 feet subsiding to 1 to 2 feet.
.TODAY...West wind less than 10 knots. Mostly sunny. Waves 1 to
2 feet.
.TONIGHT...South wind 5 to 15 knots veering southwest 10 to
15 knots late. Mostly clear through midnight then becoming mostly
cloudy. A slight chance of showers by midnight. A chance of
showers late. Waves building to 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots. Partly cloudy. A chance of
showers in the morning, then a chance of showers and a slight
chance of thunderstorms in the afternoon. Waves building to 2 to
3 feet.
.TUESDAY NIGHT...West wind less than 10 knots. Mostly clear.
Waves subsiding to 1 to 2 feet.

$$

WFO MQT