740
FZUS53 KDLH 050543
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1142 PM 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.

LSZ140-051100-
Grand Portage to Grand Marais MN-
1142 PM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...West wind 20 to 25 knots with gales to around
35 knots easing to 10 to 15 knots with gusts to around 20 knots
toward daybreak. Freezing spray late in the evening. Snow likely
late in the evening. Chance of flurries after midnight. Waves
7 to 12 feet subsiding to 5 to 8 feet toward daybreak. Waves
occasionally to 15 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots late in
the afternoon. Chance of flurries in the afternoon. Waves 3 to
5 feet subsiding to 1 to 2 feet in the afternoon. Waves
occasionally to 7 feet. A small craft advisory may be needed.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 25 knots in the late evening and
overnight. Chance of flurries. Waves 1 to 2 feet.
.SATURDAY...Northwest wind 15 to 20 knots with gusts to around
25 knots easing to 5 to 10 knots in the afternoon. Sunny. Waves
1 to 2 feet.

$$

LSZ141-051100-
Grand Marais to Taconite Harbor MN-
1142 PM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...West wind 10 to 15 knots. Gusts up to
30 knots. Freezing spray late in the evening. Chance of snow late
in the evening. Chance of flurries after midnight. Waves 6 to
9 feet subsiding to 3 to 5 feet toward daybreak. Waves
occasionally to 12 feet.
.FRIDAY...West wind 10 to 15 knots. Chance of flurries 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 in the late evening and
overnight. Chance of flurries. Waves 1 to 2 feet.
.SATURDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Sunny. Waves 1 to 2 feet.

$$

LSZ142-051100-
Taconite Harbor to Silver Bay Harbor MN-
1142 PM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...West wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 20 knots. Freezing spray late in the evening.
Chance of snow late in the evening. Chance of flurries after
midnight. Waves 4 to 7 feet subsiding to 2 to 4 feet toward
daybreak. Waves occasionally to 9 feet.
.FRIDAY...West wind 5 to 10 knots. Chance of flurries in the
afternoon. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots increasing to 25 knots in the late evening and early
morning, then decreasing to 20 knots early in the morning. Chance
of flurries. Waves 1 foot or less.
.SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Mostly sunny. Waves 1 foot or less.

$$

LSZ143-051100-
Silver Bay Harbor to Two Harbors MN-
1142 PM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
30 knots decreasing to 20 knots. Freezing spray late in the
evening. Chance of snow late in the evening, then chance of
flurries after midnight. Waves 4 to 7 feet subsiding to 2 to
4 feet toward daybreak. Waves occasionally to 9 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots late in
the afternoon. Chance of flurries in the afternoon. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Chance of flurries. Waves 1 to 2 feet.
.SATURDAY...Northwest wind 5 to 10 knots. Mostly sunny. Waves
1 foot or less.

$$

LSZ144-051100-
Two Harbors to Duluth MN-
1142 PM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
30 knots decreasing to 20 knots. Chance of snow late in the
evening, then chance of flurries after midnight. Waves 4 to
6 feet subsiding to 1 to 3 feet toward daybreak. Waves
occasionally to 7 feet.
.FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots late in
the afternoon. Chance of flurries through the day. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Chance of flurries. Waves 1 to 2 feet.
.SATURDAY...Northwest wind 5 to 10 knots. Mostly sunny. Waves
1 foot or less.

$$

LSZ145-051100-
Duluth MN to Port Wing WI-
1142 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST FRIDAY...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
30 knots decreasing to 20 knots toward daybreak. Chance of snow
late in the evening, then chance of flurries after midnight.
Waves 3 to 5 feet subsiding to 1 to 3 feet toward daybreak. Waves
occasionally to 7 feet.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
late in the afternoon. Chance of flurries in the morning, then
slight chance of snow in the afternoon. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Mostly cloudy.
Waves 1 to 3 feet.
.SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Partly sunny. Waves 1 to 2 feet.

$$

LSZ146-051100-
Port Wing to Sand Island WI-
1142 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST FRIDAY...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
30 knots late in the evening. Freezing spray late in the evening.
Chance of snow late in the evening, then chance of flurries
toward daybreak. Waves 4 to 7 feet subsiding to 3 to 5 feet
toward daybreak. Waves occasionally to 9 feet.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
late in the afternoon. Chance of flurries in the morning, then
slight 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 5 to 15 knots rising to 15 to
20 knots in the late evening and early morning, then easing to
5 to 15 knots early in the morning. Chance of flurries in the
evening. Waves 1 to 3 feet.
.SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Partly sunny. Waves 1 to 3 feet.

$$

LSZ147-051100-
Sand Island to Bayfield WI-
1142 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST FRIDAY...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
30 knots late in the evening. Freezing spray late in the evening.
Chance of snow late in the evening. Chance of flurries toward
daybreak. Waves 4 to 7 feet. Waves occasionally to 9 feet.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning then 20 knots late in the afternoon. Chance
of flurries 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 15 to 20 knots. Chance of flurries
in the evening. Waves 1 to 3 feet.
.SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in
the morning. Partly sunny. Waves 1 to 3 feet.

$$

LSZ150-051100-
Outer Apostle Islands Beyond 5 NM from Mainland-
1142 PM CST Thu Dec 4 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...Southwest wind 20 to 25 knots. Gusts up to
35 knots decreasing to 25 knots toward daybreak. Freezing spray
late in the evening. Chance of snow late in the evening, then
chance of flurries toward daybreak. Waves 6 to 9 feet subsiding
to 4 to 6 feet toward daybreak. Waves occasionally to 11 feet.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning then 20 knots late in the afternoon. Chance
of flurries in the morning, then slight chance of snow in the
afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late
morning and afternoon.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 25 knots. Chance of flurries in the evening. Waves 2 to
4 feet. A small craft advisory may be needed.
.SATURDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
in the morning. Partly sunny. Waves 2 to 4 feet subsiding to 1 to
2 feet late in the afternoon. A small craft advisory may be
needed.

$$

LSZ121-051100-
Chequamegon Bay-Bayfield to Oak Point WI-
1142 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST FRIDAY...

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Gusts up to
30 knots decreasing to 20 knots toward daybreak. Slight chance of
snow late in the evening, then chance of snow after midnight.
Chance of flurries toward daybreak. Waves 1 to 3 feet.
.FRIDAY...Southwest wind 5 to 10 knots. Chance of flurries in the
morning, then chance of snow in the afternoon. Waves 1 foot or
less.
.FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Chance of flurries in the evening. Waves 1 foot
or less.
.SATURDAY...Northwest wind 5 to 10 knots. Partly sunny. Waves
1 foot or less.

$$

LSZ148-051100-
Oak Point to Saxon Harbor WI-
1142 PM CST Thu Dec 4 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CST FRIDAY...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
35 knots decreasing to 25 knots. Slight chance of snow late in
the evening, then chance of snow after midnight. Chance of
flurries toward daybreak. Waves 2 to 4 feet subsiding to 1 to
3 feet toward daybreak.
.FRIDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Chance of snow in the afternoon. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
25 knots after midnight. Chance of flurries through the night.
Waves 1 to 2 feet building to 1 to 3 feet in the late evening and
overnight.
.SATURDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 knots late in the afternoon. Chance of
flurries in the morning. Waves 1 to 3 feet.

$$

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

WFO DLH