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FZUS53 KDLH 091338
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
738 AM CST Tue Dec 9 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.

LSZ140-091700-
Grand Portage to Grand Marais MN-
738 AM CST Tue Dec 9 2025

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY
MORNING...

.TODAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 knots early in the afternoon, then
becoming north late in the afternoon. Chance of light freezing
drizzle and snow early in the morning. Slight chance of snow late
in the afternoon. Waves 1 to 3 feet subsiding to 1 to 2 feet in
the late morning and afternoon.
.TONIGHT...Northeast wind 20 to 25 knots with gales to around
35 knots becoming north with gales to around 35 knots early in
the morning. Chance of snow in the evening, then slight chance of
snow after midnight. Waves 1 to 2 feet building to 3 to 5 feet in
the late evening and overnight. Waves occasionally to 7 feet.
.WEDNESDAY...North wind 15 to 20 knots. Gusts up to 35 knots
decreasing to 30 knots in the late morning and afternoon. Sunny.
Waves 3 to 5 feet subsiding to 1 to 3 feet in the afternoon.
.WEDNESDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
25 knots decreasing to 20 knots early in the morning. Partly
cloudy. Waves 1 to 3 feet.

$$

LSZ141-091700-
Grand Marais to Taconite Harbor MN-
738 AM CST Tue Dec 9 2025

...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY
MORNING...

.TODAY...Northwest wind 5 to 10 knots with gusts to around
25 knots becoming southeast late in the afternoon. Chance of
light freezing drizzle and snow early in the morning. Chance of
snow late in the afternoon. Waves 1 to 2 feet.
.TONIGHT...East wind 15 to 20 knots with gusts to around 30 knots
becoming north with gales to around 35 knots after midnight.
Chance of snow through the night. Waves 1 to 2 feet building to
2 to 4 feet in the late evening and overnight.
.WEDNESDAY...North wind 10 to 15 knots. Gusts up to 35 knots
decreasing to 25 knots in the late morning and afternoon. Sunny.
Waves 1 to 3 feet subsiding to 1 to 2 feet in the late morning
and afternoon.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 25 knots easing to 5 knots early in the morning. Partly
cloudy. Waves 1 foot or less.

$$

LSZ142-091700-
Taconite Harbor to Silver Bay Harbor MN-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...Northwest wind 5 to 10 knots with gusts to around
20 knots becoming southwest early in the afternoon, then becoming
southeast late in the afternoon. Chance of light freezing drizzle
and snow early in the morning. Chance of snow late in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...East wind 15 to 20 knots with gusts to around 30 knots
becoming north 20 to 25 knots with gales to around 35 knots after
midnight. Snow likely in the evening, then chance of snow after
midnight. Waves 1 foot or less building to 3 to 5 feet in the
late evening and overnight. A gale warning may be needed.
.WEDNESDAY...North wind 10 to 15 knots. Gusts up to 35 knots
decreasing to 25 knots in the late morning and afternoon. Sunny.
Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon. A
gale warning may be needed.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
25 knots. Partly cloudy. Waves 1 foot or less.

$$

LSZ143-091700-
Silver Bay Harbor to Two Harbors MN-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...Northwest wind 5 to 10 knots with gusts to around
20 knots becoming southeast late in the afternoon. Chance of
flurries and slight chance of light freezing drizzle early in the
morning. Chance of snow late in the afternoon. Waves 1 foot or
less.
.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
becoming northeast 20 to 25 knots in the late evening and early
morning, then becoming north 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 1 to 2 feet building to 3 to
5 feet in the late evening and overnight. Waves occasionally to
7 feet.
.WEDNESDAY...North wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Sunny.
Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots in the evening. Partly cloudy. Waves 1 to 2 feet.

$$

LSZ144-091700-
Two Harbors to Duluth MN-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...Northwest wind 5 to 10 knots becoming southeast late in
the afternoon. Chance of flurries and slight chance of light
freezing drizzle early in the morning. Slight chance of snow
early in the afternoon, then chance of snow late in the
afternoon. Waves 1 foot or less.
.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
becoming northeast 20 to 25 knots with gusts to around 30 knots
in the late evening and early morning, then becoming north 15 to
20 knots with gusts to around 25 knots early in the morning. Snow
in the evening, then snow likely after midnight. Waves 1 to
2 feet building to 4 to 6 feet in the late evening and overnight.
Waves occasionally to 7 feet.
.WEDNESDAY...North wind 15 to 20 knots with gusts to around
25 knots becoming northwest 5 to 10 knots with gusts to around
20 knots in the afternoon. Mostly sunny. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the afternoon.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots easing to 5 knots early in the morning. Partly
cloudy. Waves 1 to 2 feet.

$$

LSZ145-091700-
Duluth MN to Port Wing WI-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...Northwest wind 5 to 10 knots becoming southeast late in
the afternoon. Chance of flurries and slight chance of light
freezing drizzle early in the morning. Slight chance of snow
early in the afternoon, then chance of snow late in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
becoming northeast 20 to 25 knots in the late evening and early
morning, then becoming north early in the morning. Snow in the
evening, then snow likely after midnight. Waves 1 to 2 feet
building to 4 to 6 feet. Waves occasionally to 8 feet.
.WEDNESDAY...North wind 15 to 20 knots with gusts to around
25 knots becoming northwest 10 knots with gusts to around
20 knots early in the afternoon, then rising to 10 to 15 knots
late in the afternoon. Mostly sunny. Waves 3 to 5 feet subsiding
to 1 to 2 feet. Waves occasionally to 7 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Partly cloudy.
Waves 1 to 2 feet.

$$

LSZ146-091700-
Port Wing to Sand Island WI-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...West wind 5 to 10 knots becoming southeast late in the
afternoon. Chance of light freezing drizzle and flurries early in
the morning. Chance of snow late in the afternoon. Waves 1 to
2 feet.
.TONIGHT...East wind 15 to 20 knots with gusts to around 25 knots
becoming northeast 20 to 25 knots with gusts to around 30 knots
after midnight. Snow likely in the evening, then snow after
midnight. Waves 1 to 2 feet building to 4 to 6 feet. Waves
occasionally to 8 feet.
.WEDNESDAY...North wind 15 to 20 knots with gusts to around
25 knots becoming northwest 5 to 10 knots with gusts to around
20 knots in the afternoon. Slight chance of snow in the morning.
Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to
8 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 to 2 feet.

$$

LSZ147-091700-
Sand Island to Bayfield WI-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...West wind 5 to 10 knots becoming southeast late in the
afternoon. Chance of light freezing drizzle and snow early in the
morning. Chance of snow late in the afternoon. Waves 1 to 2 feet.
.TONIGHT...East wind 15 to 20 knots with gusts to around 25 knots
becoming northeast 20 to 25 knots with gusts to around 30 knots
after midnight. Snow likely in the evening, then snow after
midnight. Waves 1 foot or less building to 4 to 6 feet. Waves
occasionally to 8 feet.
.WEDNESDAY...North wind 15 to 20 knots with gusts to around
30 knots becoming northwest 5 to 10 knots with gusts to around
20 knots in the afternoon. Slight chance of snow in the morning.
Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to
8 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots in the evening. Partly cloudy in the evening then
becoming mostly cloudy. Waves 1 to 2 feet.

$$

LSZ150-091700-
Outer Apostle Islands Beyond 5 NM from Mainland-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...West wind 5 to 10 knots becoming south late in the
afternoon. Chance of light freezing drizzle and snow early in the
morning. Chance of snow late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...East wind 15 to 20 knots with gusts to around 25 knots
becoming northeast 20 to 25 knots with gusts to around 30 knots
after midnight. Snow likely. Waves 1 foot or less building to
6 to 9 feet. Waves occasionally to 11 feet.
.WEDNESDAY...North wind 20 to 25 knots with gusts to around
30 knots becoming northwest 10 to 15 knots with gusts to around
20 knots in the afternoon. Freezing spray in the morning. Slight
chance of snow in the morning. Waves 6 to 9 feet subsiding to
4 to 6 feet in the afternoon. Waves occasionally to 11 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the evening. Mostly cloudy. Waves 1 to 3 feet.

$$

LSZ121-091700-
Chequamegon Bay-Bayfield to Oak Point WI-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...Southwest wind 5 to 10 knots becoming southeast late in
the afternoon. Chance of light freezing drizzle and snow early in
the morning. Chance of snow late in the afternoon. Waves 1 foot
or less.
.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
becoming northeast 15 to 20 knots with gusts to around 30 knots
after midnight. Snow likely in the evening, then snow after
midnight. Waves 1 to 3 feet.
.WEDNESDAY...North wind 15 to 20 knots with gusts to around
30 knots becoming northwest 5 to 10 knots with gusts to around
20 knots in the afternoon. Chance of snow in the morning. Waves
1 to 3 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 foot or less.

$$

LSZ148-091700-
Oak Point to Saxon Harbor WI-
738 AM CST Tue Dec 9 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
WEDNESDAY MORNING...

.TODAY...Southwest wind 5 to 10 knots becoming southeast late in
the afternoon. Chance of light freezing drizzle and snow early in
the morning. Chance of snow late in the afternoon. Waves 1 to
2 feet.
.TONIGHT...East wind 5 to 10 knots rising to 20 to 25 knots with
gusts to around 30 knots in the late evening and early morning,
then becoming northeast with gusts to around 30 knots early in
the morning. Snow. Waves 1 to 3 feet building to 5 to 8 feet.
Waves occasionally to 10 feet.
.WEDNESDAY...North wind 20 to 25 knots with gusts to around
30 knots becoming northwest 10 to 15 knots with gusts to around
20 knots in the afternoon. Chance of snow in the morning. Waves
5 to 8 feet subsiding to 4 to 6 feet in the afternoon. Waves
occasionally to 11 feet.
.WEDNESDAY NIGHT...Northwest wind 5 to 10 knots. Mostly cloudy.
Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening
and overnight.

$$

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

WFO DLH