Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 171154
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
654 AM CDT Tue Jun 17 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.

LSZ140-141-171615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 5 to 10 knots. Gusts up to 20 knots in the
morning. Mostly sunny. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots easing to 5 knots after
midnight. Slight chance of rain showers in the evening. Waves
1 to 2 feet.
.WEDNESDAY...West wind 5 knots becoming southwest in the late
morning and afternoon. Partly sunny. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming
northwest after midnight. Slight chance of rain showers in the
evening, then chance of rain showers and slight chance of
thunderstorms after midnight. Waves 1 foot or less.

$$

LSZ142-143-171615-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 to
2 feet.
.TONIGHT...West wind 5 to 10 knots becoming northwest after
midnight. Slight chance of rain showers in the evening. Patchy
fog after midnight. Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots becoming southwest in the
afternoon. Patchy fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...West wind 5 knots. Slight chance of rain
showers in the evening, then chance of rain showers and slight
chance of thunderstorms after midnight. Waves 1 foot or less.

$$

LSZ144-171615-
Two Harbors to Duluth MN-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 5 to 10 knots. Slight chance of rain showers
late in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots. Slight chance of rain showers
in the evening. Patchy fog after midnight. Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots. Patchy fog in the morning. Waves
1 foot or less.
.WEDNESDAY NIGHT...West wind 5 knots. Chance of rain showers
after midnight. Waves 1 foot or less.

$$

LSZ145-171615-
Duluth MN to Port Wing WI-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 10 to 15 knots. Slight chance of rain showers
late in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots. Slight chance of rain showers
in the evening. Patchy fog after midnight. Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots. Patchy fog in the morning. Waves
1 foot or less.
.WEDNESDAY NIGHT...West wind 5 knots. Slight chance of rain
showers after midnight. Waves 1 foot or less.

$$

LSZ146-171615-
Port Wing to Sand Island WI-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming southwest 5 to 10 knots in the afternoon. Mostly sunny.
Waves 1 to 3 feet.
.TONIGHT...West wind 5 to 10 knots. Slight chance of rain showers
in the evening. Patchy fog after midnight. Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots becoming southwest. Patchy fog in
the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 knots becoming west early in
the morning. Chance of rain showers and slight chance of
thunderstorms after midnight. Waves 1 foot or less.

$$

LSZ147-171615-
Sand Island to Bayfield WI-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Mostly sunny. Waves 1 to 3 feet.
.TONIGHT...West wind 5 to 10 knots. Patchy fog after midnight.
Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots becoming northeast early in the
afternoon, then becoming southeast late in the afternoon. Patchy
fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...South wind 5 knots becoming west early in the
morning. Chance of rain showers and slight chance of
thunderstorms after midnight. Waves 1 foot or less.

$$

LSZ150-171615-
Outer Apostle Islands Beyond 5 NM from Mainland-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Partly sunny. Waves 1 to 3 feet subsiding to 1 to 2 feet
in the afternoon.
.TONIGHT...West wind 5 to 10 knots. Patchy fog after midnight.
Waves 1 to 2 feet.
.WEDNESDAY...West wind 5 knots becoming northwest early in the
afternoon, then becoming southeast late in the afternoon. Patchy
fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...South wind 5 knots becoming west after
midnight. Chance of rain showers and slight chance of
thunderstorms after midnight. Waves 1 foot or less.

$$

LSZ121-171615-
Chequamegon Bay-Bayfield to Oak Point WI-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 5 to 10 knots. Gusts up to 20 knots early in
the morning. Mostly sunny. Waves 1 foot or less.
.TONIGHT...West wind 5 knots. Slight chance of rain showers in
the evening. Patchy fog after midnight. Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots becoming northeast in the late
morning and afternoon. Patchy fog in the morning. Waves 1 foot or
less.
.WEDNESDAY NIGHT...West wind 5 knots. Slight chance of showers
and thunderstorms after midnight. Waves 1 foot or less.

$$

LSZ148-171615-
Oak Point to Saxon Harbor WI-
654 AM CDT Tue Jun 17 2025

.TODAY...West wind 5 to 10 knots. Gusts up to 20 knots early in
the morning. Mostly sunny. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 knots. Patchy fog after midnight.
Waves 1 foot or less.
.WEDNESDAY...Southwest wind 5 knots becoming north late in the
morning, then becoming northeast in the afternoon. Patchy fog in
the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast wind 5 knots becoming west early in
the morning. Slight chance of showers and thunderstorms after
midnight. Waves 1 foot or less.

$$

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

Wolfe