484
FZUS53 KDLH 291925
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
225 PM CDT Mon Sep 29 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.

LSZ140-300415-
Grand Portage to Grand Marais MN-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots
after midnight. Mostly clear. Waves 1 to 3 feet.
.TUESDAY...Northeast wind 15 to 20 knots with gusts to around
25 knots. Mostly sunny. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots becoming east 5 to 10 knots early in the morning.
Mostly cloudy. Waves 2 to 4 feet.
.WEDNESDAY...East wind 5 to 10 knots. Mostly cloudy. Waves 1 to
3 feet.

$$

LSZ141-300415-
Grand Marais to Taconite Harbor MN-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots
after midnight. Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...East wind 15 to 20 knots with gusts to around
25 knots. Mostly sunny. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots becoming east 5 to 10 knots early in the morning.
Mostly cloudy. Waves 2 to 4 feet.
.WEDNESDAY...East wind 5 to 10 knots. Mostly cloudy. Waves 1 to
3 feet.

$$

LSZ142-300415-
Taconite Harbor to Silver Bay Harbor MN-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...Northeast wind 10 to 15 knots with gusts to around
25 knots. Partly sunny. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
25 knots. Mostly cloudy. Waves 2 to 4 feet.
.WEDNESDAY...East wind 5 knots. Partly sunny. Waves 1 to 3 feet.

$$

LSZ143-300415-
Silver Bay Harbor to Two Harbors MN-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...Northeast wind 15 to 20 knots with gusts to around
25 knots. Partly sunny. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Mostly cloudy. Waves 2 to 4 feet.
.WEDNESDAY...East wind 5 to 10 knots. Mostly cloudy in the
morning then becoming mostly sunny. Waves 1 to 2 feet.

$$

LSZ144-300415-
Two Harbors to Duluth MN-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 2 feet.
.TUESDAY...Northeast wind 15 to 20 knots with gusts to around
25 knots. Partly sunny. Waves 3 to 5 feet.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet early
in the morning.
.WEDNESDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.

$$

LSZ145-300415-
Duluth MN to Port Wing WI-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
late in the night. Partly cloudy. Waves 1 to 2 feet.
.TUESDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots in
the afternoon. Partly sunny. Waves 1 to 3 feet building to 2 to
4 feet in the late morning and afternoon.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet early in the
morning.
.WEDNESDAY...East wind 5 to 10 knots. Mostly cloudy in the
morning then becoming mostly sunny. Waves 1 to 2 feet.

$$

LSZ146-300415-
Port Wing to Sand Island WI-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
late in the night. Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Partly sunny. Waves 2 to
4 feet.
.TUESDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Mostly cloudy. Waves 2 to 4 feet
subsiding to 1 to 2 feet early in the morning.
.WEDNESDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.

$$

LSZ147-300415-
Sand Island to Bayfield WI-
225 PM CDT Mon Sep 29 2025

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
late in the night. Partly cloudy. Waves 1 to 3 feet.
.TUESDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots. Partly sunny. Waves 2 to 4 feet. A small craft advisory
may be needed.
.TUESDAY NIGHT...Northeast wind 10 to 15 knots with gusts to
around 20 knots becoming east 5 to 10 knots after midnight.
Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet early
in the morning. A small craft advisory may be needed.
.WEDNESDAY...East wind 5 knots. Partly sunny. Waves 1 to 2 feet.

$$

LSZ150-300415-
Outer Apostle Islands Beyond 5 NM from Mainland-
225 PM CDT Mon Sep 29 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY EVENING...

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Partly cloudy. Waves 1 to 2 feet building to 1 to
3 feet late in the night.
.TUESDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Partly sunny. Waves 3 to
5 feet.
.TUESDAY NIGHT...East wind 15 to 20 knots with gusts to around
25 knots becoming southeast 5 to 10 knots after midnight. Mostly
cloudy. Waves 3 to 5 feet.
.WEDNESDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.

$$

LSZ121-300415-
Chequamegon Bay-Bayfield to Oak Point WI-
225 PM CDT Mon Sep 29 2025

.TONIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves
1 to 2 feet.
.TUESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 to
3 feet building to 2 to 4 feet.
.TUESDAY NIGHT...Northeast wind 5 to 10 knots becoming southeast
after midnight. Mostly cloudy. Waves 2 to 4 feet subsiding to
1 foot or less.
.WEDNESDAY...Southeast wind 5 knots. Partly sunny. Waves 1 foot
or less.

$$

LSZ148-300415-
Oak Point to Saxon Harbor WI-
225 PM CDT Mon Sep 29 2025

.TONIGHT...Northeast wind 5 to 10 knots. Partly cloudy. Waves
1 to 2 feet.
.TUESDAY...Northeast wind 10 to 15 knots. Partly sunny. Waves
1 to 3 feet building to 2 to 4 feet in the afternoon.
.TUESDAY NIGHT...Northeast wind 5 to 10 knots becoming southeast
after midnight. Mostly cloudy. Waves 2 to 4 feet subsiding to
1 to 2 feet after midnight.
.WEDNESDAY...Southeast wind 5 to 10 knots. Partly sunny. Waves
1 foot or less.

$$

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

Britt