Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 170026
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
726 PM CDT Mon Jun 16 2025

For waters within five nautical miles of shore on Lake Superior.

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.

LSZ140-141-171015-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...Northeast wind 10 to 15 knots with gusts to
around 20 knots becoming west 5 to 10 knots with gusts to around
20 knots toward daybreak. Patchy dense fog in the evening. Areas
of dense fog after midnight, then patchy dense fog toward
daybreak. Thunderstorms likely in the evening. Rain showers
through the night. Chance of thunderstorms after midnight. Waves
1 to 3 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Patchy dense fog in the morning. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots becoming northwest after
midnight. Partly cloudy. Waves 1 to 2 feet.
.WEDNESDAY...West wind 5 knots becoming south in the afternoon.
Slight chance of rain showers in the afternoon. Waves 1 foot or
less.

$$

LSZ142-143-171015-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...Northeast wind 10 to 15 knots becoming west
with gusts to around 20 knots after midnight. Patchy dense fog
early in the evening. Areas of dense fog in the late evening and
early morning, then patchy dense fog toward daybreak. Rain
showers with thunderstorms likely in the evening. Chance of rain
showers and slight chance of thunderstorms after midnight. Waves
1 to 3 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
easing to 5 to 10 knots with gusts to around 20 knots in the late
morning and afternoon. Patchy dense fog in the morning. Waves
1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.WEDNESDAY...West wind 5 knots becoming south in the afternoon.
Slight chance of rain showers in the afternoon. Waves 1 foot or
less.

$$

LSZ144-145-171015-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...Northeast wind 15 to 20 knots becoming west
10 to 15 knots with gusts to around 20 knots after midnight. Rain
showers with thunderstorms likely early in the evening.
Thunderstorms likely late in the evening. Chance of rain showers
in the late evening and early morning. Patchy dense fog through
the night. Waves 1 to 3 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
easing to 5 to 10 knots in the late morning and afternoon. Patchy
dense fog in the morning. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.WEDNESDAY...Northwest wind 5 knots becoming northeast in the
afternoon. Slight chance of rain showers in the afternoon. Waves
1 foot or less.

$$

LSZ146-171015-
Port Wing to Sand Island WI-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...East wind 10 to 15 knots becoming southeast
late in the evening, then becoming southwest with gusts to around
20 knots after midnight becoming west 15 to 20 knots toward
daybreak. Patchy dense fog through the night. Showers and
thunderstorms likely in the evening. Chance of rain showers and
slight chance of thunderstorms after midnight. Waves 1 to 2 feet
building to 1 to 3 feet toward daybreak.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming southwest 5 to 10 knots in the afternoon. Patchy dense
fog in the morning. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves
1 to 2 feet.
.WEDNESDAY...West wind 5 knots becoming northwest late in the
morning, then becoming northeast in the afternoon. Slight chance
of rain showers in the afternoon. Waves 1 foot or less.

$$

LSZ147-171015-
Sand Island to Bayfield WI-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...East wind 5 to 10 knots becoming southeast
10 to 15 knots late in the evening, then becoming southwest 15 to
20 knots after midnight. Patchy dense fog through the night. Rain
showers with thunderstorms likely in the evening. Chance of
showers and thunderstorms after midnight. Waves 1 to 2 feet
building to 1 to 3 feet toward daybreak.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
easing to 10 knots late in the afternoon. Patchy dense fog in the
morning. Waves 1 to 3 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves
1 to 2 feet.
.WEDNESDAY...West wind 5 knots becoming northwest late in the
morning, then becoming east in the afternoon. Slight chance of
rain showers in the afternoon. Waves 1 foot or less.

$$

LSZ150-171015-
Outer Apostle Islands Beyond 5 NM from Mainland-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...East wind 10 to 15 knots becoming southeast
with gusts to around 20 knots late in the evening, then becoming
southwest 15 to 20 knots after midnight. Widespread dense fog in
the evening, then areas of dense fog after midnight. Showers and
thunderstorms likely in the evening, then chance of showers and
thunderstorms after midnight. Waves 1 to 3 feet building to 2 to
4 feet toward daybreak.
.TUESDAY...West wind 15 to 20 knots. Patchy dense fog in the
morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
afternoon.
.TUESDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves
1 to 2 feet.
.WEDNESDAY...West wind 5 knots becoming northwest late in the
morning, then becoming east in the afternoon. Slight chance of
rain showers in the afternoon. Waves 1 foot or less.

$$

LSZ121-171015-
Chequamegon Bay-Bayfield to Oak Point WI-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...East wind 5 to 10 knots becoming south late in
the evening, then becoming southwest with gusts to around
20 knots after midnight rising to 10 to 15 knots with gusts to
around 20 knots toward daybreak. Rain showers likely in the
evening. Chance of thunderstorms through the night. Chance of
rain showers after midnight. Patchy dense fog in the late evening
and early morning. Waves 1 foot or less.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
easing to 5 to 10 knots in the late morning and afternoon. Mostly
sunny. Waves 1 foot or less.
.TUESDAY NIGHT...West wind 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.WEDNESDAY...West wind 5 knots becoming northeast in the late
morning and afternoon. Slight chance of rain showers in the
afternoon. Waves 1 foot or less.

$$

LSZ148-171015-
Oak Point to Saxon Harbor WI-
726 PM CDT Mon Jun 16 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT TUESDAY...

.REST OF TONIGHT...East wind 10 to 15 knots becoming southwest
with gusts to around 20 knots after midnight. Rain showers in the
evening. Chance of thunderstorms through the night. Chance of
rain showers after midnight. Patchy dense fog in the late evening
and overnight. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots. Gusts up to 20 knots early
in the morning. Patchy dense fog in the morning. Waves 1 to
2 feet.
.TUESDAY NIGHT...Southwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 knots becoming north in the late
morning and early afternoon, then becoming northeast late in the
afternoon. Slight chance of rain showers in the afternoon. Waves
1 foot or less.

$$

Graphical marine forecasts are available online at:
weather.gov/greatlakes

KML