585
FZUS53 KDLH 182223
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
423 PM CST Sun Jan 18 2026

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.

LSZ140-190500-
Grand Portage to Grand Marais MN-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...
...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH LATE
TONIGHT...

.TONIGHT...North wind 20 to 25 knots. Gusts up to 30 knots
increasing to 40 knots in the late evening and overnight. Snow
likely early in the evening, then chance of snow late in the
evening. Slight chance of snow after midnight. Waves 2 to 4 feet.
.MONDAY...Northwest wind 15 to 20 knots. Gusts up to 35 knots
decreasing to 30 knots in the afternoon. Slight chance of snow in
the afternoon. Waves 1 to 3 feet. A gale warning may be needed.
.MONDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 25 knots. Mostly cloudy. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Partly
sunny. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ141-190500-
Grand Marais to Taconite Harbor MN-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...
...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH LATE
TONIGHT...

.TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 35 knots
increasing to 40 knots in the late evening and overnight. Chance
of snow early in the evening, then slight chance of snow late in
the evening. Waves 1 to 3 feet building to 2 to 4 feet in the
late evening and overnight.
.MONDAY...Northwest wind 15 to 20 knots. Gales up to 40 knots
decreasing to 30 knots in the afternoon. Partly sunny. Waves 1 to
3 feet. A gale warning may be needed.
.MONDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots after midnight. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Partly sunny. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ142-190500-
Taconite Harbor to Silver Bay Harbor MN-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...
...GALE WARNING IN EFFECT FROM 9 PM CST THIS EVENING THROUGH LATE
TONIGHT...

.TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 35 knots
increasing to 40 knots in the late evening and early morning,
then decreasing to 35 knots late in the night. Chance of snow
early in the evening, then slight chance of snow late in the
evening. Waves 1 to 3 feet building to 2 to 4 feet in the late
evening and early morning, then subsiding to 1 to 3 feet late in
the night.
.MONDAY...Northwest wind 15 to 20 knots. Gales up to 40 knots
decreasing to 20 knots. Partly sunny. Waves 1 to 2 feet. A gale
warning may be needed.
.MONDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots in the late evening and
overnight. Partly cloudy in the evening then becoming mostly
cloudy. Waves 1 foot or less.
.TUESDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the
morning. Mostly sunny. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ143-190500-
Silver Bay Harbor to Two Harbors MN-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...
...GALE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 3 AM CST
MONDAY...

.TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 35 knots
increasing to 40 knots in the late evening and early morning,
then decreasing to 30 knots late in the night. Chance of snow
early in the evening, then slight chance of snow late in the
evening. Waves 1 to 3 feet building to 2 to 4 feet in the late
evening and early morning, then subsiding to 1 to 3 feet late in
the night.
.MONDAY...Northwest wind 15 to 20 knots. Gusts up to 35 knots
decreasing to 25 knots. Partly sunny. Waves 1 to 2 feet. A gale
warning may be needed.
.MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late evening and overnight. Partly
cloudy in the evening then becoming mostly cloudy. Waves 1 to
2 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Partly sunny. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ144-190500-
Two Harbors to Duluth MN-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING...
...GALE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 3 AM CST
MONDAY...

.TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 30 knots
increasing to 40 knots in the late evening and early morning,
then decreasing to 30 knots late in the night. Chance of snow
early in the evening, then slight chance of snow late in the
evening. Waves 1 to 3 feet.
.MONDAY...Northwest wind 10 to 15 knots. Gusts up to 30 knots
decreasing to 25 knots in the afternoon. Partly sunny. Waves 1 to
2 feet.
.MONDAY NIGHT...West wind 15 to 20 knots. Partly cloudy. Waves
1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots. Gusts up to 20 knots early
in the morning. Mostly sunny. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ145-190500-
Duluth MN to Port Wing WI-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 8 PM CST THIS
EVENING THROUGH MONDAY MORNING...

.TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the late evening and early morning,
then decreasing to 30 knots late in the night. Chance of snow
early in the evening. Slight chance of snow in the late evening
and overnight. Heavy freezing spray in the late evening and early
morning. Waves 4 to 6 feet. Waves occasionally to 7 feet.
.MONDAY...Northwest wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 25 knots in the afternoon. Partly sunny. Waves 2 to
4 feet.
.MONDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots after midnight. Mostly cloudy in the
evening then becoming partly cloudy. Waves 2 to 4 feet subsiding
to 1 to 3 feet after midnight.
.TUESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late morning and afternoon. Partly sunny. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ146-190500-
Port Wing to Sand Island WI-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 8 PM CST THIS
EVENING THROUGH MONDAY MORNING...

.TONIGHT...Northwest wind 20 to 25 knots with gusts to around
30 knots. Chance of snow through the night. Heavy freezing spray
in the late evening and overnight. Waves 3 to 5 feet building to
4 to 7 feet in the late evening and overnight. Waves occasionally
to 10 feet.
.MONDAY...Northwest wind 15 to 20 knots with gusts to around
25 knots. Slight chance of snow. Waves 4 to 6 feet. Waves
occasionally to 7 feet.
.MONDAY NIGHT...Northwest wind 15 to 20 knots becoming west 10 to
15 knots after midnight. Gusts up to 30 knots decreasing to
25 knots in the late evening and overnight. Mostly cloudy. Waves
2 to 4 feet subsiding to 1 to 3 feet early in the morning.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ147-190500-
Sand Island to Bayfield WI-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 8 PM CST THIS
EVENING THROUGH MONDAY MORNING...

.TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late evening and overnight. Snow
likely in the evening. Chance of snow after midnight. Heavy
freezing spray in the late evening and overnight. Waves 3 to
5 feet building to 5 to 8 feet in the late evening and overnight.
Waves occasionally to 10 feet.
.MONDAY...Northwest wind 20 to 25 knots. Gusts up to 30 knots
decreasing to 25 knots in the late morning and afternoon. Heavy
freezing spray in the morning. Chance of snow through the day.
Waves 4 to 6 feet. Waves occasionally to 8 feet.
.MONDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
30 knots decreasing to 25 knots after midnight. Mostly cloudy.
Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight.
.TUESDAY...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Mostly
cloudy. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ150-190500-
Outer Apostle Islands Beyond 5 NM from Mainland-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 8 PM CST THIS
EVENING THROUGH MONDAY MORNING...

.TONIGHT...Northwest wind up to 30 knots. Heavy freezing spray
through the night. Blowing snow after midnight. Snow likely until
early morning. Chance of snow late in the night. Waves 4 to
6 feet building to 6 to 9 feet in the late evening and overnight.
Waves occasionally to 12 feet.
.MONDAY...Northwest wind 20 to 25 knots. Gusts up to 30 knots in
the morning. Heavy freezing spray in the morning. Chance of snow
through the day. Waves 6 to 9 feet subsiding to 4 to 6 feet in
the afternoon. Waves occasionally to 11 feet.
.MONDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 25 knots. Mostly cloudy. Waves 4 to 6 feet subsiding to
2 to 4 feet after midnight. Waves occasionally to 7 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy. Waves 1 to 3 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ121-190500-
Chequamegon Bay-Bayfield to Oak Point WI-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.TONIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots in the late evening and overnight. Snow
likely until early morning, then chance of snow late in the
night. Waves 1 to 2 feet.
.MONDAY...Northwest wind 15 to 20 knots with gusts to around
30 knots becoming west 10 to 15 knots with gusts to around
25 knots in the afternoon. Chance of snow. Waves 1 to 2 feet.
.MONDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late evening and overnight. Mostly
cloudy. Waves 1 foot or less.
.TUESDAY...West wind 10 to 15 knots becoming southwest 5 to
10 knots in the late morning and afternoon. Gusts up to 20 knots.
Partly sunny. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ148-190500-
Oak Point to Saxon Harbor WI-
423 PM CST Sun Jan 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING...

.TONIGHT...Northwest wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late evening and overnight. Snow
likely early in the evening, then snow late in the evening. Snow
likely after midnight. Heavy freezing spray in the late evening
and overnight. Waves 1 to 3 feet building to 4 to 7 feet in the
late evening and overnight. Waves occasionally to 10 feet.
.MONDAY...Northwest wind 20 to 25 knots with gusts to around
30 knots becoming west 15 to 20 knots with gusts to around
25 knots late in the afternoon. Heavy freezing spray in the
morning. Chance of snow through the day. Waves 4 to 7 feet
subsiding to 2 to 4 feet in the afternoon. Waves occasionally to
9 feet.
.MONDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots in the late evening and overnight. Mostly
cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet after
midnight.
.TUESDAY...Southwest wind 10 to 15 knots with gusts to around
20 knots. Partly sunny. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

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

WFO DLH