Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 232045
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
345 PM CDT Sat Mar 23 2024

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.

LSZ140-141-240415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
LATE SUNDAY NIGHT...
...GALE WARNING IN EFFECT FROM LATE SUNDAY NIGHT THROUGH LATE
MONDAY NIGHT...

.TONIGHT...Southwest wind 10 to 15 knots becoming northeast 5 to
10 knots late in the night. Partly cloudy until early morning
then becoming mostly cloudy. Waves 1 to 2 feet.
.SUNDAY...East wind 20 to 25 knots with gusts to around 30 knots.
Slight chance of snow in the morning, then snow in the afternoon.
Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon.
.SUNDAY NIGHT...East wind up to 30 knots. Gusts up to 30 knots
increasing to 35 knots early in the morning. Snow. Waves 6 to
9 feet. Waves occasionally to 11 feet.
.MONDAY...East wind up to 30 knots with gales to around 40 knots
rising to gales to 35 knots with storm force gusts to around
50 knots in the late morning and afternoon. Snow through the day.
Slight chance of rain in the afternoon. Waves 7 to 10 feet
building to 9 to 14 feet in the late morning and afternoon. Waves
occasionally to 18 feet. A storm warning may be needed.

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

$$

LSZ142-143-240415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
LATE SUNDAY NIGHT...
...GALE WARNING IN EFFECT FROM LATE SUNDAY NIGHT THROUGH LATE
MONDAY NIGHT...

.TONIGHT...Southwest wind 5 to 10 knots becoming northeast late
in the evening, then becoming east after midnight. Partly cloudy
in the evening then becoming mostly cloudy. Waves 1 foot or less.
.SUNDAY...Southeast wind 10 to 15 knots with gusts to around
20 knots becoming east 20 to 25 knots with gales to around
35 knots in the afternoon. Chance of snow in the morning, then
snow in the afternoon. Waves 1 to 2 feet building to 4 to 6 feet.
Waves occasionally to 7 feet. A gale warning may be needed.
.SUNDAY NIGHT...East wind up to 30 knots. Gusts up to 35 knots
decreasing to 30 knots after midnight, then increasing to
35 knots early in the morning. Snow. Waves 6 to 9 feet. Waves
occasionally to 12 feet.
.MONDAY...East 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
late morning and afternoon. Snow through the day. Rain in the
afternoon. Waves 7 to 10 feet building to 10 to 15 feet in the
late morning and afternoon. Waves occasionally to 20 feet.

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

$$

LSZ144-145-240415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
LATE SUNDAY NIGHT...
...GALE WARNING IN EFFECT FROM LATE SUNDAY NIGHT THROUGH LATE
MONDAY NIGHT...

.TONIGHT...South wind 5 to 10 knots becoming southeast in the
late evening and overnight. Slight chance of snow late in the
night. Waves 1 foot or less.
.SUNDAY...Southeast wind 15 to 20 knots becoming east up to
30 knots with gales to around 35 knots in the afternoon. Chance
of snow in the morning, then snow in the afternoon. Waves 1 to
2 feet building to 4 to 6 feet. Waves occasionally to 8 feet. A
gale warning may be needed.
.SUNDAY NIGHT...East wind up to 30 knots with gales to around
35 knots. Snow. Waves 6 to 9 feet. Waves occasionally to 11 feet.
.MONDAY...East wind up to 30 knots with gales to around 40 knots
becoming northeast gales to 35 knots with gales to around
45 knots in the late morning and afternoon. Slight chance of rain
in the morning. Snow through the day. Rain in the afternoon.
Waves 9 to 14 feet. Waves occasionally to 19 feet.

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

$$

LSZ146-240415-
Port Wing to Sand Island WI-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...
...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY
EVENING...

.TONIGHT...South wind 5 to 10 knots becoming southeast in the
late evening and overnight. Partly cloudy early in the evening
then becoming mostly cloudy. Waves 1 foot or less.
.SUNDAY...Southeast wind 10 to 15 knots becoming east 20 to
25 knots with gusts to around 30 knots in the afternoon. Chance
of snow in the morning, then snow in the afternoon. Waves 1 to
3 feet building to 3 to 5 feet late in the afternoon.
.SUNDAY NIGHT...East wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots early in the morning. Snow. Waves 4 to
6 feet. Waves occasionally to 8 feet. A gale warning may be
needed.
.MONDAY...East wind up to 30 knots. Gusts up to 35 knots
increasing to 45 knots. Slight chance of rain in the morning.
Snow through the day. Rain in the afternoon. Waves 7 to 10 feet
building to 8 to 13 feet in the afternoon. Waves occasionally to
17 feet.

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

$$

LSZ147-240415-
Sand Island to Bayfield WI-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...
...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY
EVENING...

.TONIGHT...South wind 5 to 10 knots. Partly cloudy early in the
evening then becoming mostly cloudy. Waves 1 foot or less.
.SUNDAY...Southeast wind 10 to 15 knots becoming east 20 to
25 knots with gusts to around 30 knots in the afternoon. Chance
of snow in the morning, then snow in the afternoon. Waves 1 to
2 feet building to 2 to 4 feet late in the afternoon.
.SUNDAY NIGHT...East wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots early in the morning. Snow. Waves 3 to
5 feet. Waves occasionally to 7 feet. A gale warning may be
needed.
.MONDAY...East wind up to 30 knots. Gusts up to 35 knots
increasing to 45 knots in the afternoon. Slight chance of rain in
the morning. Snow through the day. Rain in the afternoon. Waves
6 to 9 feet building to 7 to 12 feet in the afternoon. Waves
occasionally to 15 feet.

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

$$

LSZ121-240415-
Chequamegon Bay-Bayfield to Oak Point WI-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY AFTERNOON...

.TONIGHT...Southeast wind 5 knots. Partly cloudy early in the
evening then becoming mostly cloudy. Waves 1 foot or less.
.SUNDAY...Southeast wind 5 to 10 knots becoming east 10 to
15 knots with gusts to around 25 knots in the afternoon. Chance
of snow in the morning, then snow in the afternoon. Waves 1 to
2 feet.
.SUNDAY NIGHT...East wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots early in the morning. Snow. Waves 1 to
3 feet.
.MONDAY...East wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the afternoon. Slight chance of rain in
the morning. Snow through the day. Rain in the afternoon. Waves
1 to 3 feet. A gale warning may be needed.

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

$$

LSZ148-240415-
Oak Point to Saxon Harbor WI-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
TUESDAY AFTERNOON...

.TONIGHT...Southeast wind 5 knots rising to 5 to 10 knots after
midnight. Partly cloudy early in the evening then becoming mostly
cloudy. Waves 1 foot or less.
.SUNDAY...Southeast wind 5 to 10 knots becoming east 15 to
20 knots with gusts to around 25 knots in the afternoon. Chance
of snow in the morning, then snow in the afternoon. Waves 1 to
3 feet.
.SUNDAY NIGHT...East wind 15 to 20 knots with gusts to around
25 knots. Snow through the night. Slight chance of rain after
midnight. Waves 2 to 4 feet.
.MONDAY...East wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the afternoon. Slight chance of rain in
the morning. Snow through the day. Rain in the afternoon. Waves
4 to 7 feet. Waves occasionally to 9 feet. A gale warning may be
needed.

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

$$

LSZ150-240415-
Outer Apostle Islands Beyond 5 NM from Mainland-
345 PM CDT Sat Mar 23 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH
MONDAY MORNING...
...GALE WARNING IN EFFECT FROM MONDAY MORNING THROUGH MONDAY
EVENING...

.TONIGHT...South wind 5 to 10 knots. Partly cloudy early in the
evening then becoming mostly cloudy. Waves 1 foot or less.
.SUNDAY...Southeast wind 10 to 15 knots becoming east 20 to
25 knots with gusts to around 30 knots in the afternoon. Slight
chance of snow in the morning, then snow in the afternoon. Waves
1 to 2 feet building to 2 to 4 feet late in the afternoon.
.SUNDAY NIGHT...East wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots early in the morning. Snow. Waves 4 to
7 feet. Waves occasionally to 9 feet. A gale warning may be
needed.
.MONDAY...East 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. Slight chance of rain in the morning. Snow through the
day. Rain in the afternoon. Waves 5 to 8 feet building to 9 to
14 feet. Waves occasionally to 19 feet.

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

$$

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

Levens


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