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FZUS53 KDLH 041131
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
531 AM CST Thu Dec 4 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.

LSZ140-041700-
Grand Portage to Grand Marais MN-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON CST TODAY THROUGH THIS
EVENING...

.TODAY...West wind 15 to 20 knots with gusts to around 25 knots
becoming southwest up to 30 knots with gales to around 35 knots
in the afternoon. Freezing spray in the afternoon. Chance of snow
late in the afternoon. Waves 1 to 2 feet building to 6 to 9 feet.
Waves occasionally to 12 feet.
.TONIGHT...Southwest wind up to 30 knots with gales to around
40 knots becoming west 15 to 20 knots early in the morning.
Freezing spray through the night. Snow likely in the evening.
Chance of snow after midnight. Waves 8 to 11 feet subsiding to
4 to 7 feet early in the morning. Waves occasionally to 14 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots early in
the morning then 20 knots late in the afternoon. Slight chance of
snow in the morning, then chance of snow in the afternoon. Waves
3 to 5 feet subsiding to 1 to 2 feet in the afternoon. A small
craft advisory may be needed.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 25 knots after midnight. Mostly cloudy.
Waves 1 to 2 feet.

$$

LSZ141-041700-
Grand Marais to Taconite Harbor MN-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON CST TODAY THROUGH THIS
EVENING...

.TODAY...West wind 5 to 10 knots becoming southwest 20 to
25 knots with gales to around 35 knots in the late morning and
afternoon. Freezing spray late in the afternoon. Chance of snow
late in the afternoon. Waves 1 to 2 feet building to 4 to 7 feet
in the afternoon. Waves occasionally to 9 feet.
.TONIGHT...Southwest wind up to 30 knots with gales to around
35 knots becoming west 15 to 20 knots with gusts to around
25 knots after midnight. Freezing spray in the evening. Chance of
snow in the evening, then slight chance of snow after midnight.
Waves 5 to 8 feet subsiding to 3 to 5 feet early in the morning.
Waves occasionally to 10 feet.
.FRIDAY...West wind 5 to 10 knots. Slight chance of snow in the
morning, then chance of snow in the afternoon. Waves 1 to 3 feet
subsiding to 1 to 2 feet in the late morning and afternoon.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots increasing to 25 knots early in the morning. Mostly
cloudy. Waves 1 foot or less.

$$

LSZ142-041700-
Taconite Harbor to Silver Bay Harbor MN-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON CST TODAY THROUGH THIS
EVENING...

.TODAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming southwest 20 to 25 knots with gusts to around 30 knots
in the afternoon. Freezing spray late in the afternoon. Chance of
snow late in the afternoon. Waves 1 to 2 feet building to 4 to
6 feet in the afternoon. Waves occasionally to 8 feet.
.TONIGHT...Southwest wind 20 to 25 knots with gales to around
35 knots becoming west 10 to 15 knots with gusts to around
20 knots early in the morning. Freezing spray in the evening.
Snow likely in the evening, then slight chance of snow after
midnight. Waves 4 to 6 feet subsiding to 2 to 4 feet early in the
morning. Waves occasionally to 8 feet.
.FRIDAY...West wind 5 to 10 knots. Chance of snow. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 5 to 10 knots with gusts to around
20 knots. Slight chance of snow in the evening. Waves 1 foot or
less.

$$

LSZ143-041700-
Silver Bay Harbor to Two Harbors MN-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON CST TODAY THROUGH THIS
EVENING...

.TODAY...Southwest wind 15 to 20 knots with gusts to around
30 knots rising to 20 to 25 knots with gusts to around 30 knots
late in the afternoon. Freezing spray late in the afternoon.
Slight chance of snow late in the afternoon. Waves 1 to 3 feet
building to 4 to 6 feet in the afternoon. Waves occasionally to
8 feet.
.TONIGHT...Southwest wind 20 to 25 knots with gales to around
35 knots becoming west 10 to 15 knots with gusts to around
20 knots early in the morning. Freezing spray in the evening.
Snow likely in the evening, then slight chance of snow after
midnight. Waves 4 to 6 feet subsiding to 2 to 4 feet early in the
morning. Waves occasionally to 8 feet.
.FRIDAY...West wind 5 to 10 knots. Chance of snow. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 5 to 10 knots with gusts to around
20 knots. Slight chance of snow in the evening. Waves 1 foot or
less.

$$

LSZ144-041700-
Two Harbors to Duluth MN-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON CST TODAY THROUGH THIS
EVENING...

.TODAY...Southwest wind 20 to 25 knots with gusts to around
30 knots. Slight chance of snow late in the afternoon. Waves 1 to
3 feet building to 3 to 5 feet in the afternoon. Waves
occasionally to 7 feet.
.TONIGHT...Southwest wind 20 to 25 knots with gales to around
35 knots easing to 10 to 15 knots with gusts to around 20 knots
early in the morning. Chance of snow through the night. Waves
4 to 6 feet subsiding to 1 to 3 feet early in the morning. Waves
occasionally to 8 feet.
.FRIDAY...West wind 5 to 10 knots. Chance of snow. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Slight chance of snow in the evening. Waves
1 foot or less.

$$

LSZ145-041700-
Duluth MN to Port Wing WI-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TODAY...Southwest wind 20 to 25 knots with gusts to around
30 knots. Slight chance of snow late in the afternoon. Waves 1 to
2 feet building to 2 to 4 feet in the afternoon.
.TONIGHT...Southwest wind up to 30 knots easing to 15 to 20 knots
after midnight. Gusts up to 35 knots decreasing to 25 knots.
Chance of snow through the night. Waves 4 to 6 feet subsiding to
2 to 4 feet early in the morning. Waves occasionally to 7 feet. A
gale warning may be needed.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
late in the afternoon. Chance of snow. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Slight chance of snow in the evening. Waves 1 to
2 feet.

$$

LSZ146-041700-
Port Wing to Sand Island WI-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TODAY...Southwest wind 20 to 25 knots with gusts to around
30 knots. Slight chance of snow late in the afternoon. Waves 1 to
2 feet building to 2 to 4 feet in the late morning and afternoon.
.TONIGHT...Southwest wind up to 30 knots with gales to around
35 knots easing to 15 to 20 knots with gusts to around 25 knots
early in the morning. Freezing spray in the evening. Snow likely
in the evening, then chance of snow after midnight. Waves 4 to
6 feet. Waves occasionally to 8 feet. A gale warning may be
needed.
.FRIDAY...West wind 5 to 10 knots. Gusts up to 20 knots early in
the morning then 20 knots in the afternoon. Chance of snow. Waves
1 to 3 feet.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 25 knots. Slight chance of snow in the evening. Waves 1 to
2 feet.

$$

LSZ147-041700-
Sand Island to Bayfield WI-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TODAY...Southwest wind 15 to 20 knots with gusts to around
30 knots rising to 20 to 25 knots with gusts to around 30 knots
late in the afternoon. Slight chance of snow late in the
afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the
afternoon.
.TONIGHT...Southwest wind up to 30 knots with gales to around
35 knots becoming west 15 to 20 knots with gusts to around
25 knots early in the morning. Snow likely in the evening, then
chance of snow after midnight. Waves 3 to 5 feet. Waves
occasionally to 7 feet. A gale warning may be needed.
.FRIDAY...West wind 5 to 10 knots. Gusts up to 20 knots early in
the morning then 20 knots late in the afternoon. Chance of snow.
Waves 1 to 3 feet.
.FRIDAY NIGHT...West wind 10 knots becoming northwest in the late
evening and overnight. Gusts up to 25 knots. Chance of snow in
the evening. Waves 1 to 2 feet.

$$

LSZ150-041700-
Outer Apostle Islands Beyond 5 NM from Mainland-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON CST TODAY...
...GALE WARNING IN EFFECT FROM NOON CST TODAY THROUGH THIS
EVENING...

.TODAY...Southwest wind 15 to 20 knots with gusts to around
25 knots rising to 20 to 25 knots with gales to around 35 knots
in the afternoon. Slight chance of snow late in the afternoon.
Waves 4 to 6 feet. Waves occasionally to 7 feet.
.TONIGHT...Southwest wind up to 30 knots with gales to around
40 knots becoming west 15 to 20 knots with gusts to around
30 knots early in the morning. Freezing spray in the evening.
Snow likely in the evening, then chance of snow after midnight.
Waves 4 to 7 feet. Waves occasionally to 9 feet.
.FRIDAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming southwest early in the afternoon, then becoming west
with gusts to around 20 knots late in the afternoon. Chance of
snow. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late
morning and afternoon.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots increasing to 25 knots in the late evening and
overnight. Chance of snow in the evening. Waves 1 to 3 feet.

$$

LSZ121-041700-
Chequamegon Bay-Bayfield to Oak Point WI-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TODAY...Southwest wind 20 to 25 knots with gusts to around
30 knots. Slight chance of snow late in the afternoon. Waves 1 to
2 feet.
.TONIGHT...Southwest wind up to 30 knots with gales to around
35 knots easing to 15 to 20 knots with gusts to around 30 knots
after midnight. Chance of snow through the night. Waves 1 to
3 feet. A gale warning may be needed.
.FRIDAY...Southwest wind 5 to 10 knots. Chance of snow in the
morning, then snow likely in the afternoon. Waves 1 foot or less.
.FRIDAY NIGHT...West wind 10 to 15 knots becoming northwest after
midnight. Gusts up to 20 knots. Chance of snow in the evening.
Waves 1 foot or less.

$$

LSZ148-041700-
Oak Point to Saxon Harbor WI-
531 AM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING...

.TODAY...Southwest wind 20 to 25 knots with gales to around
35 knots. Slight chance of snow late in the afternoon. Waves 1 to
2 feet building to 2 to 4 feet late in the afternoon.
.TONIGHT...Southwest wind up to 30 knots with gales to around
35 knots easing to 15 to 20 knots with gusts to around 25 knots
early in the morning. Chance of snow through the night. Waves
2 to 4 feet subsiding to 1 to 3 feet early in the morning. A gale
warning may be needed.
.FRIDAY...Southwest wind 10 to 15 knots with gusts to around
20 knots easing to 10 knots with gusts to around 20 knots late in
the afternoon. Chance of snow in the morning, then snow likely in
the afternoon. Waves 1 to 2 feet.
.FRIDAY NIGHT...West wind 10 to 15 knots becoming northwest after
midnight. Gusts up to 20 knots. Chance of snow in the evening,
then slight chance of snow after midnight. Waves 1 to 2 feet.

$$

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

WFO DLH