457
FZUS53 KDLH 250004
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
704 PM CDT Sun Aug 24 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.

LSZ140-141-250415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 10 to 15 knots with gusts to around
20 knots. Chance of sprinkles early in the evening. Waves 1 to
2 feet.
.MONDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots in
the morning. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...Northwest wind 5 to 10 knots becoming southwest 10 to
15 knots with gusts to around 20 knots in the afternoon. Sunny.
Waves 1 to 2 feet.

$$

LSZ142-143-250415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots
until early morning. Chance of sprinkles early in the evening.
Waves 1 to 2 feet.
.MONDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or
less.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...Northwest wind 5 to 10 knots becoming southwest in the
afternoon. Sunny. Waves 1 foot or less.

$$

LSZ144-145-250415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Chance of sprinkles early in the evening.
Waves 1 to 3 feet.
.MONDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...West wind 5 knots becoming southwest late in the
afternoon. Sunny. Waves 1 foot or less.

$$

LSZ146-250415-
Port Wing to Sand Island WI-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 10 to 15 knots with gusts to around
20 knots. Chance of sprinkles early in the evening. Waves 1 to
3 feet.
.MONDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 to 10 knots late in the afternoon.
Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...Northwest wind 5 knots becoming southwest in the
afternoon. Sunny. Waves 1 foot or less.

$$

LSZ147-250415-
Sand Island to Bayfield WI-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 10 to 15 knots with gusts to around
20 knots. Chance of sprinkles early in the evening. Waves 2 to
4 feet subsiding to 1 to 3 feet late in the night.
.MONDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 to 10 knots late in the afternoon.
Sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...Northwest wind 5 to 10 knots becoming southwest late
in the afternoon. Sunny. Waves 1 foot or less.

$$

LSZ150-250415-
Outer Apostle Islands Beyond 5 NM from Mainland-
704 PM CDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING...

.TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots
late in the evening. Chance of sprinkles early in the evening.
Waves 2 to 4 feet.
.MONDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 to 10 knots late in the afternoon.
Sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet in the
afternoon.
.MONDAY NIGHT...Northwest wind 5 to 10 knots becoming north after
midnight. Mostly clear. Waves 1 to 2 feet.
.TUESDAY...Northwest wind 5 to 10 knots becoming southwest late
in the afternoon. Sunny. Waves 1 to 2 feet.

$$

LSZ121-250415-
Chequamegon Bay-Bayfield to Oak Point WI-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 5 to 10 knots. Chance of rain showers
early in the evening, then chance of sprinkles late in the
evening. Waves 1 to 2 feet.
.MONDAY...Northwest wind 10 to 15 knots. Sunny. Waves 1 foot or
less.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...Northwest wind 5 knots. Sunny. Waves 1 foot or less.

$$

LSZ148-250415-
Oak Point to Saxon Harbor WI-
704 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain showers early in the evening,
then chance of sprinkles late in the evening. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.MONDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots in
the morning. Sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.
.TUESDAY...Northwest wind 5 to 10 knots becoming west late in the
afternoon. Sunny. Waves 1 foot or less.

$$

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

Rothstein