603
FZUS53 KDLH 251455
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
955 AM CDT Wed Jun 25 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.

LSZ140-141-252215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Southeast wind 5 knots becoming east late.
Chance of rain showers late. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Chance of rain showers
in the evening, then slight chance of rain showers after
midnight. Waves 1 foot or less.
.THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the afternoon. Slight chance of
rain showers in the morning, then chance of rain showers in the
afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
25 knots. Chance of rain showers. Waves 1 to 3 feet.

$$

LSZ142-143-252215-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Chance of rain
showers in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Chance of rain showers in the evening, then
slight chance of rain showers after midnight. Waves 1 to 3 feet.
.THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers in the morning, then chance of rain
showers in the afternoon. Waves 1 to 3 feet building to 2 to
4 feet in the late morning and afternoon.
.THURSDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Chance of rain showers. Waves 2 to 4 feet subsiding to 1 to
3 feet early in the morning.

$$

LSZ144-145-252215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Gusts up to
20 knots late. Chance of rain showers late in the morning, then
rain showers likely in the afternoon. Waves 1 to 2 feet.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
early in the evening then 20 knots after midnight. Chance of rain
showers in the evening, then slight chance of rain showers after
midnight. Waves 1 to 2 feet building to 1 to 3 feet early in the
morning.
.THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Chance
of rain showers. Waves 2 to 4 feet. A small craft advisory may be
needed.
.THURSDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Chance of rain showers through the night. Waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning. A small craft
advisory may be needed.

$$

LSZ146-252215-
Port Wing to Sand Island WI-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Chance of rain
showers in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Rain showers likely in
the evening, then chance of rain showers after midnight. Waves
1 to 3 feet.
.THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Chance of rain showers
in the morning, then rain showers likely in the afternoon. Waves
1 to 3 feet building to 2 to 4 feet in the late morning and
afternoon.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots until early morning. Rain showers likely in the evening,
then slight chance of rain showers after midnight. Waves 2 to
4 feet subsiding to 1 to 3 feet early in the morning.

$$

LSZ147-252215-
Sand Island to Bayfield WI-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 knots. Chance of rain showers
in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Rain showers likely in
the evening, then chance of rain showers after midnight. Waves
1 to 2 feet.
.THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Chance of rain showers. Waves
1 to 3 feet building to 2 to 4 feet in the afternoon.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots until early morning. Rain showers likely. Waves 2 to
4 feet subsiding to 1 to 3 feet early in the morning.

$$

LSZ150-252215-
Outer Apostle Islands Beyond 5 NM from Mainland-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Chance of rain
showers in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Chance of rain showers. Waves 1 to 3 feet.
.THURSDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots. Chance of rain showers. Waves 1 to 3 feet building to
2 to 4 feet in the late morning and afternoon.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots in the late evening and
overnight. Rain showers likely. Waves 2 to 4 feet.

$$

LSZ121-252215-
Chequamegon Bay-Bayfield to Oak Point WI-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Chance of rain
showers in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Rain showers likely in
the evening, then chance of rain showers after midnight. Waves
1 to 2 feet.
.THURSDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots. Chance of rain showers in the morning, then rain
showers likely in the afternoon. Waves 1 to 2 feet.
.THURSDAY NIGHT...Northeast wind 5 to 10 knots. Gusts up to
20 knots early in the evening. Rain showers likely in the
evening, then slight chance of rain showers after midnight. Waves
1 to 2 feet.

$$

LSZ148-252215-
Oak Point to Saxon Harbor WI-
955 AM CDT Wed Jun 25 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Chance of rain
showers in the afternoon. Waves 1 foot or less.
.TONIGHT...Northeast wind 10 to 15 knots. Rain showers likely in
the evening, then chance of rain showers after midnight. Waves
1 to 2 feet.
.THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
in the afternoon. Chance of rain showers in the morning, then
rain showers likely in the afternoon. Waves 1 to 3 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Rain showers likely. Waves 1 to 3 feet.

$$

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

Unruh