Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 181507
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1007 AM CDT Thu Apr 18 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.

LSZ140-141-182215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TODAY...Southwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 30 knots. Mostly sunny. Waves 1 to 3 feet
building to 3 to 5 feet in the afternoon.
.TONIGHT...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late evening and overnight. Slight
chance of rain showers in the evening. Waves 3 to 5 feet.
.FRIDAY...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 30 knots. Slight chance of rain showers and snow
showers in the afternoon. Waves 3 to 5 feet. Waves occasionally
to 7 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots with gusts to around
30 knots. Slight chance of rain showers and snow showers in the
evening. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the
morning. Waves occasionally to 7 feet.

$$

LSZ142-143-182215-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TODAY...Southwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 25 knots in the afternoon. Mostly sunny.
Waves 1 to 3 feet building to 2 to 4 feet in the afternoon.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain showers in the evening. Waves
1 to 3 feet subsiding to 1 to 2 feet in the late evening and
overnight.
.FRIDAY...West wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots late in the afternoon. Slight chance of
rain showers and snow showers in the afternoon. Waves 2 to
4 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 25 knots in the late evening and overnight. Slight
chance of rain showers in the evening. Slight chance of snow
showers through the night. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight.

$$

LSZ144-145-182215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING...

.REST OF TODAY...Southwest wind 15 to 20 knots. Gusts up to 25
knots. Mostly sunny. Waves 1 to 2 feet building to 1 to 3 feet in
the afternoon.
.TONIGHT...West wind 15 to 20 knots. Gusts up to 25 knots. Mostly
cloudy in the evening then becoming partly cloudy. Waves 2 to 4
feet.
.FRIDAY...West wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Slight
chance of rain showers and snow showers in the afternoon. Waves
3 to 5 feet. Waves occasionally to 7 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 25 knots in the late evening and overnight. Slight
chance of rain showers in the evening. Slight chance of snow
showers through the night. Waves 3 to 5 feet. Waves occasionally
to 7 feet.

$$

LSZ146-182215-
Port Wing to Sand Island WI-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TODAY...Southwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 25 knots in the afternoon. Mostly sunny.
Waves 1 to 3 feet building to 2 to 4 feet in the afternoon.
.TONIGHT...West wind 15 to 20 knots. Gusts up to 25 knots early
in the evening then 25 knots early in the morning. Partly cloudy.
Waves 3 to 5 feet.
.FRIDAY...West wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Slight
chance of rain showers and snow showers in the afternoon. Waves
4 to 6 feet. Waves occasionally to 8 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 25 knots in the late evening and overnight. Slight
chance of rain showers and snow showers in the evening. Waves
4 to 6 feet. Waves occasionally to 8 feet.

$$

LSZ147-182215-
Sand Island to Bayfield WI-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TODAY...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 30 knots in the afternoon. Mostly sunny. Waves 1 to
2 feet building to 2 to 4 feet in the afternoon.
.TONIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots late in the evening, then increasing to
25 knots after midnight. Partly cloudy. Waves 3 to 5 feet.
.FRIDAY...West wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Slight
chance of rain showers and snow showers in the afternoon. Waves
4 to 6 feet. Waves occasionally to 8 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 25 knots in the late evening and overnight. Slight
chance of rain showers in the evening. Waves 4 to 6 feet. Waves
occasionally to 8 feet.

$$

LSZ121-182215-
Chequamegon Bay-Bayfield to Oak Point WI-
1007 AM CDT Thu Apr 18 2024

.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Partly sunny. Waves 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots easing to 10 knots late in
the evening, then rising to 10 to 15 knots after midnight. Gusts
up to 20 knots. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 foot or less.
.FRIDAY...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers and snow showers in the afternoon. Waves
1 to 2 feet.
.FRIDAY NIGHT...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late evening and overnight. Mostly
cloudy. Waves 1 to 2 feet.

$$

LSZ148-182215-
Oak Point to Saxon Harbor WI-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TODAY...Southwest wind 10 knots rising to 10 to 15 knots
with gusts to around 25 knots in the afternoon. Partly sunny.
Waves 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 to 3 feet.
.FRIDAY...West wind 15 to 20 knots with gusts to around 25 knots.
Slight chance of rain showers and snow showers in the afternoon.
Waves 2 to 4 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
early in the evening then 25 knots after midnight. Slight chance
of rain showers in the evening. Slight chance of snow showers
through the night. Waves 2 to 4 feet subsiding to 1 to 3 feet
late in the evening, then building to 2 to 4 feet after midnight.

$$

LSZ150-182215-
Outer Apostle Islands Beyond 5 NM from Mainland-
1007 AM CDT Thu Apr 18 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING...

.REST OF TODAY...Southwest wind 15 to 20 knots. Gusts up to
20 knots increasing to 30 knots in the afternoon. Mostly sunny.
Waves 1 to 3 feet building to 2 to 4 feet in the afternoon.
.TONIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots late in the evening, then increasing to
25 knots after midnight. Partly cloudy. Waves 3 to 5 feet. Waves
occasionally to 7 feet.
.FRIDAY...West wind 20 to 25 knots. Gusts up to 25 knots
increasing to 30 knots in the late morning and afternoon. Slight
chance of rain showers and snow showers in the afternoon. Waves
4 to 7 feet. Waves occasionally to 9 feet.
.FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 30 knots
decreasing to 25 knots in the late evening and overnight. Slight
chance of rain showers and snow showers in the evening. Waves
4 to 7 feet. Waves occasionally to 9 feet.

$$

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

JDS


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