735
FZUS53 KDLH 050807
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
307 AM CDT Sun Oct 5 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.

LSZ140-051615-
Grand Portage to Grand Marais MN-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...South wind 20 to 25 knots. Gusts up to 30 knots
increasing to 40 knots. Slight chance of rain showers late in the
afternoon. Waves 5 to 8 feet. Waves occasionally to 11 feet.
.TONIGHT...Southwest wind 20 to 25 knots with gales to around
40 knots becoming west with gales to around 40 knots in the late
evening and early morning, then becoming northwest 10 to 15 knots
with gusts to around 25 knots early in the morning. Slight chance
of rain showers in the evening. Waves 6 to 9 feet subsiding to
2 to 4 feet early in the morning. Waves occasionally to 11 feet.
.MONDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming southwest with gusts to around 20 knots in the
afternoon. Mostly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Mostly clear. Waves 1 to 3 feet.

$$

LSZ141-051615-
Grand Marais to Taconite Harbor MN-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...South wind 15 to 20 knots. Gusts up to 25 knots
increasing to 35 knots. Chance of showers late in the afternoon.
Waves 4 to 6 feet. Waves occasionally to 7 feet.
.TONIGHT...Southwest wind 15 to 20 knots with gales to around
35 knots becoming northwest with gales to around 35 knots in the
late evening and overnight. Slight chance of rain showers in the
evening. Waves 4 to 6 feet subsiding to 1 to 3 feet early in the
morning. Waves occasionally to 8 feet.
.MONDAY...Northwest wind 5 to 10 knots with gusts to around
20 knots becoming southwest 10 to 15 knots in the afternoon.
Sunny in the morning then becoming partly sunny. Waves 1 to
2 feet.
.MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Mostly clear. Waves 1 to 2 feet.

$$

LSZ142-051615-
Taconite Harbor to Silver Bay Harbor MN-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...South wind 15 to 20 knots. Gusts up to 25 knots
increasing to 35 knots. Slight chance of showers early in the
afternoon. Chance of showers late in the afternoon. Waves 3 to
5 feet. Waves occasionally to 7 feet.
.TONIGHT...Southwest wind 15 to 20 knots with gales to around
35 knots becoming west with gusts to around 30 knots in the late
evening and early morning, then becoming northwest 5 to 10 knots
with gusts to around 20 knots early in the morning. Slight chance
of rain showers in the evening. Waves 3 to 5 feet subsiding to
1 to 3 feet after midnight. Waves occasionally to 7 feet.
.MONDAY...Northwest wind 5 to 10 knots becoming southwest in the
afternoon. Sunny in the morning then becoming partly sunny. Waves
1 foot or less.
.MONDAY NIGHT...West wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Mostly clear. Waves 1 foot or less.

$$

LSZ143-051615-
Silver Bay Harbor to Two Harbors MN-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots
increasing to 35 knots. Slight chance of showers early in the
afternoon. Chance of showers late in the afternoon. Waves 4 to
6 feet. Waves occasionally to 7 feet.
.TONIGHT...West wind 15 to 20 knots with gales to around 35 knots
becoming northwest 10 to 15 knots with gusts to around 25 knots
after midnight. Slight chance of rain showers in the evening.
Waves 4 to 6 feet subsiding to 1 to 2 feet after midnight. Waves
occasionally to 7 feet.
.MONDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or
less.
.MONDAY NIGHT...West wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Mostly clear. Waves 1 foot or less.

$$

LSZ144-051615-
Two Harbors to Duluth MN-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...Southwest wind 20 to 25 knots. Gusts up to 25 knots
increasing to 35 knots. Chance of showers in the afternoon. Waves
4 to 6 feet. Waves occasionally to 7 feet.
.TONIGHT...West wind 20 to 25 knots with gales to around 35 knots
becoming northwest 15 to 20 knots with gusts to around 25 knots
after midnight. Partly cloudy. Waves 4 to 6 feet subsiding to
1 to 3 feet after midnight. Waves occasionally to 7 feet.
.MONDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or
less.
.MONDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

LSZ145-051615-
Duluth MN to Port Wing WI-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...South wind 20 to 25 knots. Gusts up to 25 knots
increasing to 35 knots. Chance of showers in the afternoon. Waves
3 to 5 feet.
.TONIGHT...West wind 20 to 25 knots with gales to around 35 knots
becoming northwest 15 to 20 knots with gusts to around 25 knots
after midnight. Mostly cloudy in the evening then clearing. Waves
4 to 6 feet subsiding to 1 to 2 feet early in the morning. Waves
occasionally to 7 feet.
.MONDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or
less.
.MONDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves 1 to
2 feet.

$$

LSZ146-051615-
Port Wing to Sand Island WI-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...South wind 20 to 25 knots. Gusts up to 25 knots
increasing to 35 knots. Slight chance of showers early in the
afternoon. Chance of showers late in the afternoon. Waves 1 to
3 feet building to 3 to 5 feet in the late morning and afternoon.
.TONIGHT...West wind 20 to 25 knots with gales to around 35 knots
becoming northwest 10 to 15 knots with gusts to around 25 knots
after midnight. Chance of rain showers in the evening. Waves 4 to
6 feet subsiding to 1 to 3 feet early in the morning. Waves
occasionally to 7 feet.
.MONDAY...Northwest wind 5 to 10 knots becoming west in the
afternoon. Mostly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...West wind 5 to 10 knots. Gusts up to 20 knots in
the late evening and overnight. Mostly clear. Waves 1 to 2 feet.

$$

LSZ147-051615-
Sand Island to Bayfield WI-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...South wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Chance
of showers late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest wind 15 to 20 knots with gusts to around
30 knots becoming west with gusts to around 30 knots in the late
evening and overnight. Chance of rain showers in the evening.
Waves 3 to 5 feet subsiding to 1 to 3 feet early in the morning.
Waves occasionally to 7 feet.
.MONDAY...Northwest wind 5 to 10 knots becoming west in the
afternoon. Mostly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...West wind 5 to 10 knots. Gusts up to 20 knots in
the late evening and overnight. Mostly clear. Waves 1 to 2 feet.

$$

LSZ150-051615-
Outer Apostle Islands Beyond 5 NM from Mainland-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...
...GALE WARNING IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH
THIS EVENING...

.TODAY...South wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots late in the afternoon. Chance of showers
late in the afternoon. Waves 3 to 5 feet. Waves occasionally to
7 feet.
.TONIGHT...Southwest wind 15 to 20 knots with gales to around
35 knots becoming northwest with gusts to around 25 knots early
in the morning. Slight chance of rain showers in the evening.
Waves 4 to 6 feet. Waves occasionally to 7 feet.
.MONDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 to 10 knots in the afternoon. Mostly
sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Mostly clear. Waves 1 to 3 feet.

$$

LSZ121-051615-
Chequamegon Bay-Bayfield to Oak Point WI-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...South wind 20 to 25 knots with gusts to around 30 knots.
Chance of showers late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest wind 15 to 20 knots with gusts to around
30 knots becoming west with gusts to around 30 knots in the late
evening and overnight. Chance of rain showers in the evening.
Waves 1 to 3 feet.
.MONDAY...Northwest wind 5 to 10 knots becoming west late in the
afternoon. Mostly sunny. Waves 1 foot or less.
.MONDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

LSZ148-051615-
Oak Point to Saxon Harbor WI-
307 AM CDT Sun Oct 5 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...South wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the afternoon. Chance of showers late
in the afternoon. Waves 2 to 4 feet.
.TONIGHT...Southwest wind 15 to 20 knots with gusts to around
30 knots becoming northwest 10 to 15 knots with gusts to around
20 knots early in the morning. Chance of rain showers in the
evening. Waves 2 to 4 feet subsiding to 1 to 2 feet early in the
morning.
.MONDAY...Northwest wind 5 to 10 knots becoming west late in the
afternoon. Mostly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

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

JDS