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FZUS53 KDLH 182308
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
608 PM CDT Fri Sep 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.

LSZ140-191000-
Grand Portage to Grand Marais MN-
608 PM CDT Fri Sep 18 2026

.REST OF TONIGHT...East wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Mostly cloudy. Waves 1 to 3 feet.
.SATURDAY...East wind 5 knots. Partly sunny. Waves 1 to 2 feet.
.SATURDAY NIGHT...Northeast wind 5 knots becoming north late in
the evening, then rising to 15 to 20 knots with gusts to around
25 knots after midnight. Mostly cloudy. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 15 to 20 knots with gusts to around
30 knots becoming east 10 to 15 knots with gusts to around
20 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet
building to 2 to 4 feet in the late morning and afternoon.

$$

LSZ141-191000-
Grand Marais to Taconite Harbor MN-
608 PM CDT Fri Sep 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.REST OF TONIGHT...Northeast wind 10 to 15 knots with gusts to
around 20 knots easing to 5 knots toward daybreak. Mostly cloudy.
Waves 1 to 3 feet.
.SATURDAY...East wind 5 knots. Partly sunny. Waves 1 to 2 feet.
.SATURDAY NIGHT...North wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 foot or less.
.SUNDAY...Northeast wind 10 to 15 knots with gusts to around
25 knots becoming east with gusts to around 25 knots in the
afternoon. Mostly sunny. Waves 1 to 3 feet building to 2 to
4 feet in the afternoon. A small craft advisory may be needed.

$$

LSZ142-191000-
Taconite Harbor to Silver Bay Harbor MN-
608 PM CDT Fri Sep 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.REST OF TONIGHT...Northeast wind 5 to 10 knots. Gusts up to
20 knots in the evening. Mostly cloudy. Waves 1 to 3 feet.
.SATURDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves
1 to 2 feet.
.SATURDAY NIGHT...Variable winds 10 knots or less becoming north
5 to 10 knots in the late evening and overnight. Mostly cloudy.
Waves 1 foot or less.
.SUNDAY...Northeast wind 10 to 15 knots with gusts to around
25 knots becoming east with gusts to around 25 knots in the
afternoon. Mostly sunny. Waves 1 foot or less building to 3 to
5 feet in the late morning and afternoon. A small craft advisory
may be needed.

$$

LSZ143-191000-
Silver Bay Harbor to Two Harbors MN-
608 PM CDT Fri Sep 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.REST OF TONIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Mostly cloudy. Waves 1 to 3 feet
subsiding to 1 to 2 feet toward daybreak.
.SATURDAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots in
the late morning and afternoon. Partly sunny. Waves 1 to 2 feet.
.SATURDAY NIGHT...Northeast wind 5 to 10 knots. Gusts up to
20 knots early in the morning. Mostly cloudy. Waves 1 foot or
less.
.SUNDAY...Northeast wind 15 to 20 knots with gusts to around
30 knots becoming east with gusts to around 30 knots late in the
afternoon. Partly sunny. Waves 1 to 2 feet building to 4 to
6 feet in the late morning and afternoon. Waves occasionally to
7 feet. A small craft advisory may be needed.

$$

LSZ144-191000-
Two Harbors to Duluth MN-
608 PM CDT Fri Sep 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.REST OF TONIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots after midnight. Slight
chance of rain showers and drizzle early in the evening. Slight
chance of drizzle after midnight. Patchy fog after midnight.
Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight.
.SATURDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Patchy fog in the morning.
Waves 1 to 2 feet.
.SATURDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots early in the morning. Mostly cloudy. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Partly
sunny. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small
craft advisory may be needed.

$$

LSZ145-191000-
Duluth MN to Port Wing WI-
608 PM CDT Fri Sep 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.REST OF TONIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots after midnight. Chance of
rain showers early in the evening. Slight chance of drizzle until
early morning. Patchy fog after midnight. Waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight.
.SATURDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Patchy fog in the morning.
Waves 1 to 2 feet.
.SATURDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots early in the morning. Mostly cloudy. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Partly
sunny. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small
craft advisory may be needed.

$$

LSZ146-191000-
Port Wing to Sand Island WI-
608 PM CDT Fri Sep 18 2026

.REST OF TONIGHT...Northeast wind 10 to 15 knots becoming east
5 knots after midnight. Slight chance of drizzle until early
morning. Waves 1 to 3 feet.
.SATURDAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots in
the afternoon. Partly sunny. Waves 1 to 2 feet.
.SATURDAY NIGHT...Northeast wind 10 to 15 knots with gusts to
around 20 knots. Mostly cloudy. Waves 1 foot or less.
.SUNDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Partly
sunny. Waves 1 to 3 feet building to 4 to 6 feet in the late
morning and afternoon. Waves occasionally to 8 feet. A small
craft advisory may be needed.

$$

LSZ147-191000-
Sand Island to Bayfield WI-
608 PM CDT Fri Sep 18 2026

.REST OF TONIGHT...East wind 5 to 10 knots. Slight chance of
drizzle late in the evening. Waves 1 to 3 feet.
.SATURDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot
or less.
.SATURDAY NIGHT...Northeast wind 5 knots rising to 10 to 15 knots
with gusts to around 20 knots. Mostly cloudy. Waves 1 foot or
less.
.SUNDAY...Northeast wind 15 to 20 knots with gusts to around
30 knots. Partly sunny. Waves 4 to 6 feet. Waves occasionally to
8 feet. A small craft advisory may be needed.

$$

LSZ150-191000-
Outer Apostle Islands Beyond 5 NM from Mainland-
608 PM CDT Fri Sep 18 2026

.REST OF TONIGHT...East wind 10 to 15 knots easing to 5 knots
after midnight. Mostly cloudy. Waves 1 to 3 feet.
.SATURDAY...East wind 5 to 10 knots becoming northeast late in
the afternoon. Partly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Northeast wind 10 to 15 knots with gusts to
around 25 knots. Mostly cloudy. Waves 1 to 2 feet.
.SUNDAY...Northeast wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the afternoon. Partly sunny. Waves 2 to
4 feet building to 4 to 7 feet in the late morning and afternoon.
Waves occasionally to 9 feet. A gale warning may be needed.

$$

LSZ121-191000-
Chequamegon Bay-Bayfield to Oak Point WI-
608 PM CDT Fri Sep 18 2026

.REST OF TONIGHT...East wind 5 knots. Slight chance of drizzle
late in the evening. Slight chance of drizzle toward daybreak.
Patchy fog after midnight. Waves 1 to 3 feet.
.SATURDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves
1 foot or less.
.SATURDAY NIGHT...Northeast wind 5 knots rising to 5 to 10 knots
after midnight. Mostly cloudy. Waves 1 foot or less.
.SUNDAY...Northeast wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the afternoon. Partly sunny. Waves 1 to
3 feet building to 4 to 7 feet in the late morning and afternoon.
Waves occasionally to 9 feet. A gale warning may be needed.

$$

LSZ148-191000-
Oak Point to Saxon Harbor WI-
608 PM CDT Fri Sep 18 2026

.REST OF TONIGHT...East wind 5 knots. Mostly cloudy. Waves 1 to
3 feet.
.SATURDAY...East wind 5 knots becoming northeast in the
afternoon. Partly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Northeast wind 5 to 10 knots. Gusts up to
20 knots early in the morning. Mostly cloudy. Waves 1 foot or
less.
.SUNDAY...Northeast wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the afternoon. Partly sunny. Waves 1 to
3 feet building to 4 to 7 feet in the late morning and afternoon.
Waves occasionally to 9 feet. A gale warning may be needed.

$$

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

WFO DLH