Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 170845
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
345 AM CDT Wed Apr 17 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.

LSZ140-141-171615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast 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. Rain showers. Waves 7 to 12 feet subsiding
to 6 to 9 feet late in the afternoon. Waves occasionally to
15 feet.
.TONIGHT...North wind 10 to 15 knots with gusts to around
25 knots becoming west 5 to 10 knots early in the morning. Chance
of rain showers in the evening, then slight chance of rain
showers after midnight. Waves 4 to 7 feet subsiding to 3 to
5 feet after midnight. Waves occasionally to 9 feet. A small
craft advisory may be needed.
.THURSDAY...Southwest wind 15 to 20 knots with gusts to around
25 knots. Slight chance of rain showers in the afternoon. Waves
1 to 3 feet subsiding to 1 to 2 feet late in the morning, then
building to 3 to 5 feet in the afternoon. A small craft advisory
may be needed.
.THURSDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain showers through the night. Slight
chance of snow showers after midnight. Waves 3 to 5 feet
subsiding to 1 to 3 feet early in the morning. A small craft
advisory may be needed.

$$

LSZ143-171615-
Silver Bay Harbor to Two Harbors MN-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...Northeast wind up to 30 knots with gales to around
40 knots becoming north 10 to 15 knots with gusts to around
25 knots late in the afternoon. Rain showers until late
afternoon, then rain showers likely late in the afternoon. Waves
7 to 12 feet subsiding to 6 to 9 feet late in the afternoon.
Waves occasionally to 15 feet.
.TONIGHT...West wind 5 to 10 knots becoming southwest early in
the morning. Chance of rain showers in the evening. Waves 4 to
7 feet subsiding to 2 to 4 feet after midnight. Waves
occasionally to 9 feet. A small craft advisory may be needed.
.THURSDAY...Southwest wind 15 to 20 knots with gusts to around
25 knots. Slight chance of rain showers in the afternoon. Waves
1 to 3 feet building to 2 to 4 feet in the afternoon.
.THURSDAY NIGHT...West wind 15 to 20 knots. Slight chance of rain
showers through the night. Slight chance of snow showers after
midnight. Waves 1 to 3 feet.

$$

LSZ142-171615-
Taconite Harbor to Silver Bay Harbor MN-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast wind up to 30 knots with gales to around
40 knots becoming north 10 to 15 knots with gusts to around
25 knots late in the afternoon. Rain showers. Waves 7 to 12 feet
subsiding to 6 to 9 feet late in the afternoon. Waves
occasionally to 15 feet.
.TONIGHT...Northwest wind 5 to 10 knots becoming west after
midnight. Chance of rain showers in the evening. Waves 4 to
6 feet subsiding to 2 to 4 feet after midnight. Waves
occasionally to 8 feet. A small craft advisory may be needed.
.THURSDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Slight chance of rain showers
in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in
the afternoon.
.THURSDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain showers through the night. Slight
chance of snow showers after midnight. Waves 1 to 3 feet
subsiding to 1 to 2 feet in the late evening and overnight.

$$

LSZ144-145-171615-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...Northeast wind up to 30 knots with gales to around
40 knots becoming north 10 to 15 knots with gusts to around
20 knots late in the afternoon. Rain showers until late
afternoon, then chance of rain showers late in the afternoon.
Waves 8 to 11 feet subsiding to 5 to 8 feet late in the
afternoon. Waves occasionally to 14 feet.
.TONIGHT...West wind 5 to 10 knots becoming southwest early in
the morning. Slight chance of rain showers in the evening. Waves
4 to 6 feet subsiding to 2 to 4 feet after midnight. Waves
occasionally to 8 feet. A small craft advisory may be needed.
.THURSDAY...Southwest wind 15 to 20 knots with gusts to around
25 knots. Slight chance of rain showers in the afternoon. Waves
1 to 2 feet building to 2 to 4 feet in the afternoon. A small
craft advisory may be needed.
.THURSDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
until early morning. Slight chance of rain showers through the
night. Slight chance of snow showers after midnight. Waves 2 to
4 feet. A small craft advisory may be needed.

$$

LSZ146-171615-
Port Wing to Sand Island WI-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...Northeast wind 20 to 25 knots with gusts to around
30 knots becoming north 15 to 20 knots with gusts to around
25 knots late in the afternoon. Slight chance of thunderstorms
early in the morning. Rain showers until late afternoon, then
rain showers likely late in the afternoon. Waves 7 to 10 feet.
Waves occasionally to 13 feet.
.TONIGHT...Northwest wind 10 knots becoming west in the late
evening and overnight. Chance of rain showers in the evening.
Waves 4 to 6 feet subsiding to 2 to 4 feet after midnight. Waves
occasionally to 8 feet. A small craft advisory may be needed.
.THURSDAY...Southwest wind 10 knots rising to 15 to 20 knots with
gusts to around 25 knots in the late morning and afternoon.
Slight chance of rain showers in the afternoon. Waves 1 to 2 feet
building to 3 to 5 feet in the afternoon. A small craft advisory
may be needed.
.THURSDAY NIGHT...West wind 15 to 20 knots with gusts to around
25 knots easing to 5 to 15 knots with gusts to around 20 knots
late in the evening, then rising to 15 to 20 knots with gusts to
around 25 knots after midnight. Slight chance of rain showers
through the night. Slight chance of snow showers after midnight.
Waves 2 to 4 feet. A small craft advisory may be needed.

$$

LSZ147-171615-
Sand Island to Bayfield WI-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...Northeast wind 20 to 25 knots with gusts to around
30 knots becoming north 15 to 20 knots with gusts to around
25 knots late in the afternoon. Slight chance of thunderstorms
early in the morning. Rain showers through the day. Waves 6 to
9 feet. Waves occasionally to 12 feet.
.TONIGHT...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 to 10 knots in the late evening and
overnight. Chance of rain showers in the evening. Waves 4 to
6 feet subsiding to 1 to 3 feet after midnight. Waves
occasionally to 8 feet. A small craft advisory may be needed.
.THURSDAY...Southwest wind 15 to 20 knots with gusts to around
25 knots. Slight chance of rain showers in the afternoon. Waves
1 to 2 feet building to 2 to 4 feet in the afternoon. A small
craft advisory may be needed.
.THURSDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
early in the evening. Slight chance of rain showers through the
night. Slight chance of snow showers after midnight. Waves 2 to
4 feet. A small craft advisory may be needed.

$$

LSZ121-171615-
Chequamegon Bay-Bayfield to Oak Point WI-
345 AM CDT Wed Apr 17 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS
MORNING...

.TODAY...Northeast wind 15 to 20 knots with gusts to around
25 knots becoming north 10 to 15 knots with gusts to around
20 knots late in the afternoon. Slight chance of thunderstorms
early in the morning. Rain showers until late afternoon, then
rain showers likely late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Northwest wind 5 to 10 knots becoming west in the late
evening and overnight. Chance of rain showers in the evening.
Waves 1 foot or less.
.THURSDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
in the late morning and afternoon. Slight chance of rain showers
in the afternoon. Waves 1 foot or less.
.THURSDAY NIGHT...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. Slight chance of rain showers
through the night. Slight chance of snow showers after midnight.
Waves 1 foot or less.

$$

LSZ148-171615-
Oak Point to Saxon Harbor WI-
345 AM CDT Wed Apr 17 2024

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast wind 15 to 20 knots with gusts to around
25 knots becoming north 10 to 15 knots with gusts to around
20 knots late in the afternoon. Slight chance of thunderstorms
early in the morning. Rain showers through the day. Waves 4 to
7 feet subsiding to 3 to 5 feet late in the afternoon. Waves
occasionally to 9 feet.
.TONIGHT...Northwest wind 5 to 10 knots becoming west after
midnight. Chance of rain showers in the evening. Waves 3 to
5 feet subsiding to 1 to 3 feet after midnight. A small craft
advisory may be needed.
.THURSDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
in the afternoon. Slight chance of rain showers in the afternoon.
Waves 1 to 2 feet.
.THURSDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain showers through the night. Slight
chance of snow showers after midnight. Waves 1 to 2 feet.

$$

LSZ150-171615-
Outer Apostle Islands Beyond 5 NM from Mainland-
345 AM CDT Wed Apr 17 2024

...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...Northeast wind 20 to 25 knots. Gusts up to 35 knots
decreasing to 30 knots late in the afternoon. Rain showers likely
and slight chance of thunderstorms early in the morning, then
rain showers in the late morning and afternoon. Waves 7 to
10 feet. Waves occasionally to 14 feet.
.TONIGHT...Northwest wind 10 to 15 knots with gusts to around
20 knots becoming west 5 to 10 knots after midnight. Chance of
rain showers in the evening. Waves 4 to 7 feet subsiding to 2 to
4 feet after midnight. Waves occasionally to 9 feet. A small
craft advisory may be needed.
.THURSDAY...Southwest wind 10 knots becoming west 15 to 20 knots
with gusts to around 25 knots in the late morning and afternoon.
Slight chance of rain showers in the afternoon. Waves 1 to 3 feet
building to 3 to 5 feet in the afternoon. A small craft advisory
may be needed.
.THURSDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots in the late evening and early morning,
then increasing to 25 knots early in the morning. Slight chance
of rain showers through the night. Slight chance of snow showers
after midnight. Waves 3 to 5 feet. A small craft advisory may be
needed.

$$

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

Britt


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