182
FZUS53 KDLH 150523
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1222 AM CDT Sun Mar 15 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.

LSZ140-151600-
Grand Portage to Grand Marais MN-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH THIS EVENING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...
...STORM WARNING IN EFFECT FROM THIS EVENING THROUGH MONDAY
AFTERNOON...

.TODAY...Northeast wind up to 30 knots. Gusts up to 30 knots
increasing to 45 knots. Slight chance of snow early in the
morning, then chance of snow late in the morning. Snow likely in
the afternoon. Heavy freezing spray in the late morning and
afternoon. Waves 3 to 5 feet building to 7 to 10 feet in the late
morning and afternoon. Waves occasionally to 13 feet.
.TONIGHT...North gales to 40 knots with storm force gusts to
around 50 knots. Heavy freezing spray through the night. Chance
of snow in the evening. Slight chance of snow after midnight.
Waves 7 to 10 feet. Waves occasionally to 13 feet.
.MONDAY...North gales to 40 knots with storm force gusts to
around 50 knots easing to up to 30 knots with gales to around
45 knots late in the afternoon. Slight chance of snow in the
morning. Heavy freezing spray through the day. Waves 7 to
10 feet. Waves occasionally to 13 feet.
.MONDAY NIGHT...North wind up to 30 knots with gales to around
40 knots easing to 15 to 20 knots with gusts to around 25 knots
early in the morning. Mostly clear. Waves 4 to 7 feet subsiding
to 3 to 5 feet after midnight. Waves occasionally to 9 feet. A
gale warning may be needed.

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

$$

LSZ141-151600-
Grand Marais to Taconite Harbor MN-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH LATE MONDAY NIGHT...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...

.TODAY...Northeast wind up to 30 knots. Gusts up to 30 knots
increasing to 35 knots in the late morning and afternoon. Chance
of snow in the morning. Snow likely in the afternoon. Freezing
spray in the late morning and afternoon. Waves 5 to 8 feet. Waves
occasionally to 11 feet.
.TONIGHT...North wind up to 30 knots. Gales up to 40 knots
increasing to 50 knots. Heavy freezing spray through the night.
Chance of snow in the evening. Slight chance of snow after
midnight. Waves 4 to 7 feet. Waves occasionally to 9 feet. A
storm warning may be needed.
.MONDAY...North wind up to 30 knots. Gales up to 45 knots
decreasing to 35 knots. Heavy freezing spray in the morning.
Waves 4 to 6 feet. Waves occasionally to 8 feet.
.MONDAY NIGHT...North wind 20 to 25 knots with gales to around
35 knots becoming northwest 10 to 15 knots with gusts to around
25 knots after midnight. Mostly clear. Waves 3 to 5 feet
subsiding to 1 to 2 feet after midnight.

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

$$

LSZ142-151600-
Taconite Harbor to Silver Bay Harbor MN-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...

.TODAY...Northeast wind up to 30 knots. Gusts up to 30 knots
increasing to 35 knots in the late morning and afternoon.
Freezing spray in the morning. Freezing spray late in the
afternoon. Chance of snow in the morning, then snow early in the
afternoon. Snow likely late in the afternoon. Waves 4 to 7 feet
building to 7 to 10 feet in the late morning and afternoon. Waves
occasionally to 13 feet.
.TONIGHT...North wind up to 30 knots. Gusts up to 35 knots
increasing to 45 knots. Freezing spray through the night. Chance
of snow in the evening. Slight chance of snow after midnight.
Waves 6 to 9 feet subsiding to 4 to 7 feet after midnight. Waves
occasionally to 12 feet.
.MONDAY...North wind up to 30 knots. Gales up to 45 knots
decreasing to 30 knots. Heavy freezing spray in the morning.
Waves 4 to 6 feet. Waves occasionally to 8 feet.
.MONDAY NIGHT...North wind 15 to 20 knots with gusts to around
30 knots becoming northwest 5 to 10 knots early in the morning.
Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight.

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

$$

LSZ143-151600-
Silver Bay Harbor to Two Harbors MN-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY MORNING...

.TODAY...Northeast wind up to 30 knots with gales to around
35 knots. Freezing spray through the day. Snow likely early in
the morning. Snow in the late morning and afternoon. Waves 8 to
11 feet. Waves occasionally to 15 feet.
.TONIGHT...North wind up to 30 knots. Gusts up to 35 knots
increasing to 40 knots after midnight. Freezing spray through the
night. Snow likely in the evening. Slight chance of snow after
midnight. Waves 7 to 10 feet subsiding to 5 to 8 feet after
midnight. Waves occasionally to 13 feet.
.MONDAY...North wind up to 30 knots with gales to around 40 knots
easing to 15 to 20 knots with gusts to around 30 knots late in
the afternoon. Heavy freezing spray in the morning. Waves 4 to
6 feet. Waves occasionally to 8 feet.
.MONDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
late evening and overnight.

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

$$

LSZ144-151600-
Two Harbors to Duluth MN-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY MORNING...

.TODAY...Northeast wind up to 30 knots with gales to around
35 knots. Snow through the day. Freezing spray in the late
morning and afternoon. Waves 8 to 11 feet. Waves occasionally to
15 feet.
.TONIGHT...North wind up to 30 knots. Gusts up to 35 knots
increasing to 40 knots in the late evening and overnight.
Freezing spray through the night. Snow likely in the evening.
Slight chance of snow after midnight. Waves 7 to 10 feet
subsiding to 5 to 8 feet after midnight. Waves occasionally to
13 feet.
.MONDAY...North wind up to 30 knots. Gales up to 40 knots
decreasing to 30 knots. Heavy freezing spray in the morning.
Waves 4 to 6 feet. Waves occasionally to 8 feet.
.MONDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to
15 knots after midnight. Mostly clear. Waves 2 to 4 feet
subsiding to 1 to 2 feet after midnight. A small craft advisory
may be needed.

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

$$

LSZ145-151600-
Duluth MN to Port Wing WI-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY MORNING...

.TODAY...Northeast wind up to 30 knots with gales to around
35 knots rising to gales to 35 knots with gales to around
40 knots in the late morning and afternoon. Snow through the day.
Freezing spray in the late morning and afternoon. Waves 8 to
13 feet. Waves occasionally to 17 feet.
.TONIGHT...North gales to 35 knots with gales to around 40 knots.
Heavy freezing spray through the night. Chance of snow in the
evening. Slight chance of snow after midnight. Waves 7 to
12 feet. Waves occasionally to 16 feet.
.MONDAY...North gales to 35 knots with gales to around 40 knots
easing to up to 30 knots with gales to around 35 knots in the
late morning and afternoon. Heavy freezing spray. Waves 7 to
10 feet subsiding to 5 to 8 feet in the afternoon. Waves
occasionally to 13 feet.
.MONDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to
15 knots with gusts to around 20 knots after midnight. Partly
cloudy. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves
occasionally to 8 feet. A small craft advisory may be needed.

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

$$

LSZ146-151600-
Port Wing to Sand Island WI-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY MORNING...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY MORNING...

.TODAY...Northeast wind up to 30 knots with gales to around
35 knots rising to gales to 35 knots with gales to around
40 knots in the late morning and afternoon. Freezing spray. Snow.
Waves 6 to 9 feet building to 8 to 13 feet in the late morning
and afternoon. Waves occasionally to 17 feet.
.TONIGHT...North gales to 35 knots with gales to around 40 knots.
Heavy freezing spray through the night. Snow likely in the
evening. Chance of snow after midnight. Waves 7 to 12 feet. Waves
occasionally to 16 feet.
.MONDAY...North gales to 35 knots with gales to around 40 knots
easing to 20 to 25 knots with gusts to around 30 knots. Heavy
freezing spray. Slight chance of snow. Waves 7 to 12 feet
subsiding to 7 to 10 feet in the afternoon. Waves occasionally to
16 feet.
.MONDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to
15 knots with gusts to around 20 knots after midnight. Heavy
freezing spray in the evening. Waves 5 to 8 feet subsiding to
3 to 5 feet after midnight. Waves occasionally to 10 feet. A
small craft advisory may be needed.

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

$$

LSZ147-151600-
Sand Island to Bayfield WI-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...

.TODAY...Northeast wind up to 30 knots with gales to around
40 knots rising to gales to 35 knots with gales to around
40 knots in the afternoon. Snow through the day. Freezing spray
in the late morning and afternoon. Waves 4 to 7 feet building to
8 to 13 feet. Waves occasionally to 17 feet.
.TONIGHT...North gales to 35 knots with gales to around 40 knots.
Heavy freezing spray through the night. Snow likely in the
evening. Chance of snow after midnight. Waves 8 to 13 feet. Waves
occasionally to 17 feet.
.MONDAY...North gales to 35 knots with gales to around 40 knots
easing to up to 30 knots with gales to around 35 knots in the
late morning and afternoon. Heavy freezing spray through the day.
Slight chance of snow through the day. Waves 8 to 13 feet
subsiding to 7 to 10 feet in the afternoon. Waves occasionally to
16 feet.
.MONDAY NIGHT...North wind 20 to 25 knots with gusts to around
30 knots easing to 10 to 15 knots with gusts to around 20 knots
after midnight. Heavy freezing spray in the evening. Waves 5 to
8 feet subsiding to 3 to 5 feet after midnight. Waves
occasionally to 11 feet. A small craft advisory may be needed.

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

$$

LSZ150-151600-
Outer Apostle Islands Beyond 5 NM from Mainland-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...

.TODAY...Northeast wind up to 30 knots with gales to around
40 knots rising to gales to 35 knots with gales to around
40 knots in the afternoon. Blowing snow until late afternoon.
Freezing spray in the late morning and afternoon. Snow until late
afternoon. Snow likely late in the afternoon. Waves 5 to 8 feet
building to 11 to 16 feet. Waves occasionally to 21 feet.
.TONIGHT...North gales to 40 knots with gales to around 45 knots.
Heavy freezing spray and blowing snow through the night. Snow
likely in the evening. Chance of snow after midnight. Waves 12 to
17 feet. Waves occasionally to 22 feet.
.MONDAY...North gales to 35 knots with gales to around 45 knots
easing to up to 30 knots with gales to around 40 knots in the
late morning and afternoon. Blowing snow in the morning. Heavy
freezing spray through the day. Chance of snow in the morning.
Slight chance of snow in the afternoon. Waves 11 to 16 feet
subsiding to 9 to 14 feet in the afternoon. Waves occasionally to
21 feet.
.MONDAY NIGHT...North wind 20 to 25 knots with gusts to around
30 knots easing to 10 to 15 knots with gusts to around 20 knots
early in the morning. Heavy freezing spray in the evening. Waves
8 to 11 feet subsiding to 3 to 5 feet. Waves occasionally to
14 feet. A small craft advisory may be needed.

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

$$

LSZ148-151600-
Oak Point to Saxon Harbor WI-
1222 AM CDT Sun Mar 15 2026

...GALE WARNING IN EFFECT FROM 4 AM CDT EARLY THIS MORNING
THROUGH MONDAY AFTERNOON...
...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 7 AM CDT THIS
MORNING THROUGH MONDAY AFTERNOON...

.TODAY...Northeast wind up to 30 knots with gales to around
40 knots rising to gales to 35 knots with gales to around
45 knots in the afternoon. Freezing spray through the day.
Blowing snow in the late morning and early afternoon. Snow
through the day. Waves 4 to 7 feet building to 10 to 15 feet.
Waves occasionally to 19 feet.
.TONIGHT...North gales to 40 knots. Storm force gusts up to
50 knots decreasing to 45 knots after midnight. Heavy freezing
spray through the night. Blowing snow after midnight. Snow in the
evening. Snow likely after midnight. Waves 11 to 16 feet. Waves
occasionally to 21 feet. A storm warning may be needed.
.MONDAY...North gales to 40 knots with gales to around 45 knots
easing to up to 30 knots with gales to around 35 knots in the
afternoon. Heavy freezing spray through the day. Chance of snow
through the day. Waves 11 to 16 feet subsiding to 7 to 12 feet.
Waves occasionally to 21 feet.
.MONDAY NIGHT...North wind 20 to 25 knots with gusts to around
30 knots becoming northwest 10 to 15 knots with gusts to around
20 knots early in the morning. Heavy freezing spray in the
evening. Waves 7 to 10 feet subsiding to 4 to 7 feet after
midnight. Waves occasionally to 13 feet. A small craft advisory
may be needed.

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

$$

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

WFO DLH