Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 222143 AAA
NSHDLH

Nearshore Marine Forecast...UPDATED
National Weather Service Duluth MN
443 PM CDT Mon Apr 22 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.

LSZ140-141-230415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 5 to 10 knots with gusts to around
25 knots becoming west 10 to 15 knots after midnight. Rain likely
in the evening, then chance of rain after midnight. Waves 1 to 3
feet.
.TUESDAY...Northwest wind 15 to 20 knots with gusts to around
25 knots becoming northeast 20 to 25 knots with gusts to around
30 knots in the late morning and afternoon. Chance of rain and
snow in the morning, then slight chance of snow in the afternoon.
Waves 1 to 3 feet building to 3 to 5 feet in the late morning and
afternoon. Waves occasionally to 7 feet. A small craft advisory
may be needed.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Clear. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the
morning. A small craft advisory may be needed.
.WEDNESDAY...East wind 5 to 10 knots becoming southeast 10 to
15 knots with gusts to around 20 knots in the late morning and
afternoon. Sunny. Waves 1 to 2 feet.

$$

LSZ142-143-230415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
25 knots easing to 5 to 10 knots after midnight. Chance of rain
in the evening, then slight chance of rain after midnight. Waves
1 to 2 feet.
.TUESDAY...West wind 5 to 10 knots becoming northeast 15 to
20 knots with gusts to around 25 knots in the late morning and
early afternoon, then easing to 10 to 15 knots with gusts to
around 20 knots late in the afternoon. Rain likely in the
morning, then chance of rain and snow in the afternoon. Waves
1 to 2 feet building to 3 to 5 feet in the afternoon. A small
craft advisory may be needed.
.TUESDAY NIGHT...East wind 5 to 10 knots. Mostly clear. Waves
2 to 4 feet. A small craft advisory may be needed.
.WEDNESDAY...East wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Sunny. Waves 1 to 3 feet.

$$

LSZ144-145-230415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Chance of rain in the evening, then slight chance of rain after
midnight. Waves 1 to 2 feet.
.TUESDAY...West wind 5 to 10 knots becoming northwest 10 to
15 knots with gusts to around 20 knots late in the morning, then
becoming northeast 15 to 20 knots with gusts to around 30 knots
in the afternoon. Rain likely through the day. Chance of snow in
the afternoon. Waves 1 to 2 feet building to 3 to 5 feet in the
afternoon. Waves occasionally to 7 feet. A small craft advisory
may be needed.
.TUESDAY NIGHT...East wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Mostly clear. Waves 3 to 5 feet. A small
craft advisory may be needed.
.WEDNESDAY...East wind 15 to 20 knots. Sunny. Waves 1 to 3 feet.

$$

LSZ146-230415-
Port Wing to Sand Island WI-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Chance of rain in the evening, then slight chance of rain after
midnight. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots becoming northeast 15 to
20 knots with gusts to around 30 knots in the afternoon. Rain
likely in the morning, then chance of snow and slight chance of
rain in the afternoon. Waves 1 to 2 feet building to 4 to 6 feet
in the afternoon. Waves occasionally to 8 feet. A small craft
advisory may be needed.
.TUESDAY NIGHT...East wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Mostly clear. Waves 3 to 5 feet. A small
craft advisory may be needed.
.WEDNESDAY...East wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Sunny. Waves 1 to 3 feet.

$$

LSZ147-230415-
Sand Island to Bayfield WI-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Chance of rain in the evening, then slight chance of rain after
midnight. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming northeast 15 to 20 knots with gusts to around 30 knots
in the afternoon. Rain likely in the morning, then chance of snow
and rain in the afternoon. Waves 1 to 2 feet building to 4 to
6 feet in the afternoon. Waves occasionally to 8 feet. A small
craft advisory may be needed.
.TUESDAY NIGHT...East wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Mostly clear. Waves 3 to 5 feet. A small
craft advisory may be needed.
.WEDNESDAY...East wind 10 to 15 knots. Sunny. Waves 1 to 3 feet.

$$

LSZ121-230415-
Chequamegon Bay-Bayfield to Oak Point WI-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
25 knots easing to 5 to 10 knots after midnight. Chance of rain
in the evening, then slight chance of rain after midnight. Waves
1 to 2 feet.
.TUESDAY...West wind 10 knots becoming north with gusts to around
25 knots late in the morning, then becoming northeast 20 to
25 knots with gusts to around 30 knots in the afternoon. Rain
likely through the day. Chance of snow in the afternoon. Waves
1 to 2 feet building to 6 to 9 feet in the afternoon. Waves
occasionally to 12 feet. A small craft advisory may be needed.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots. Gusts up to
25 knots. Mostly clear. Waves 5 to 8 feet subsiding to 4 to
6 feet early in the morning. Waves occasionally to 11 feet. A
small craft advisory may be needed.
.WEDNESDAY...East wind 5 to 10 knots. Sunny. Waves 3 to 5 feet
subsiding to 1 to 2 feet in the late morning and afternoon. A
small craft advisory may be needed.

$$

LSZ148-230415-
Oak Point to Saxon Harbor WI-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots easing to 10 knots late
in the night. Gusts up to 25 knots. Chance of rain in the
evening, then slight chance of rain after midnight. Waves 1 to
2 feet.
.TUESDAY...West wind 10 knots becoming north 15 to 20 knots with
gusts to around 25 knots late in the morning, then becoming
northeast 20 to 25 knots with gusts to around 30 knots in the
afternoon. Rain likely in the morning, then chance of snow and
slight chance of rain in the afternoon. Waves 1 to 2 feet
building to 6 to 9 feet in the afternoon. Waves occasionally to
12 feet. A small craft advisory may be needed.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots. Gusts up to
25 knots. Mostly clear. Waves 5 to 8 feet subsiding to 4 to
6 feet early in the morning. Waves occasionally to 11 feet. A
small craft advisory may be needed.
.WEDNESDAY...East wind 5 to 10 knots. Sunny. Waves 3 to 5 feet
subsiding to 1 to 3 feet late in the afternoon. A small craft
advisory may be needed.

$$

LSZ150-230415-
Outer Apostle Islands Beyond 5 NM from Mainland-
443 PM CDT Mon Apr 22 2024

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

.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots after midnight. Chance of rain in the
evening, then slight chance of rain after midnight. Waves 1 to
3 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming north 20 to 25 knots with gusts to around 30 knots in
the late morning and early afternoon, then becoming northeast
15 to 20 knots with gusts to around 30 knots late in the
afternoon. Rain likely in the morning, then chance of snow and
slight chance of rain in the afternoon. Waves 1 to 2 feet
building to 6 to 9 feet. Waves occasionally to 12 feet. A small
craft advisory may be needed.
.TUESDAY NIGHT...Northeast wind 15 to 20 knots. Gusts up to
25 knots. Mostly clear. Waves 5 to 8 feet subsiding to 4 to
6 feet early in the morning. Waves occasionally to 11 feet. A
small craft advisory may be needed.
.WEDNESDAY...East wind 10 to 15 knots. Sunny. Waves 3 to 5 feet
subsiding to 1 to 3 feet late in the afternoon. A small craft
advisory may be needed.

$$

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

Wolfe


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