Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 230915
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
415 AM CDT Thu May 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.

LSZ140-141-231615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
415 AM CDT Thu May 23 2024

.TODAY...West wind 10 to 15 knots. Gusts up to 20 knots. Sunny.
Waves 1 to 3 feet.
.TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 25 knots in the late evening and
overnight. Partly cloudy. Waves 1 to 2 feet building to 1 to
3 feet early in the morning.
.FRIDAY...East wind 20 to 25 knots. Gusts up to 30 knots
increasing to 35 knots in the late morning and afternoon. Rain
showers likely and slight chance of thunderstorms in the
afternoon. Waves 6 to 9 feet. Waves occasionally to 11 feet. A
gale warning may be needed.
.FRIDAY NIGHT...East wind 20 to 25 knots with gales to around
35 knots becoming west 15 to 20 knots with gusts to around
30 knots early in the morning. Rain showers likely in the
evening. Slight chance of thunderstorms through the night. Chance
of rain showers after midnight. Waves 6 to 9 feet subsiding to
4 to 6 feet early in the morning. Waves occasionally to 11 feet.
A gale warning may be needed.

$$

LSZ142-143-231615-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots with gusts to around 20 knots
becoming south late in the afternoon. Sunny. Waves 1 to 2 feet.
.TONIGHT...Northeast wind 15 to 20 knots with gusts to around
30 knots. Partly cloudy in the evening then becoming mostly
cloudy. Waves 1 to 3 feet building to 3 to 5 feet early in the
morning. A small craft advisory may be needed.
.FRIDAY...Northeast wind 20 to 25 knots. Gusts up to 35 knots
decreasing to 30 knots late in the afternoon. Slight chance of
rain showers in the morning, then rain showers and slight chance
of thunderstorms in the afternoon. Waves 7 to 10 feet. Waves
occasionally to 14 feet. A gale warning may be needed.
.FRIDAY NIGHT...Northeast wind 20 to 25 knots with gales to
around 35 knots becoming northwest 15 to 20 knots with gusts to
around 25 knots after midnight, then becoming west 10 to 15 knots
with gusts to around 20 knots early in the morning. Rain showers
and slight chance of thunderstorms in the evening, then chance of
rain showers after midnight. Waves 7 to 10 feet subsiding to 4 to
6 feet. Waves occasionally to 14 feet. A gale warning may be
needed.

$$

LSZ144-145-231615-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots becoming east late in the
afternoon. Slight chance of rain showers late in the afternoon.
Waves 1 foot or less.
.TONIGHT...Northeast wind 20 to 25 knots with gusts to around
30 knots. Slight chance of rain showers. Waves 1 to 2 feet
building to 3 to 5 feet. Waves occasionally to 7 feet. A small
craft advisory may be needed.
.FRIDAY...Northeast wind 20 to 25 knots. Gusts up to 35 knots
decreasing to 30 knots late in the afternoon. Slight chance of
rain showers in the morning. Slight chance of thunderstorms
through the day. Rain showers in the afternoon. Waves 7 to
10 feet. Waves occasionally to 13 feet. A gale warning may be
needed.
.FRIDAY NIGHT...Northeast wind 20 to 25 knots with gusts to
around 30 knots becoming north with gusts to around 30 knots late
in the evening, then becoming west 10 to 15 knots with gusts to
around 20 knots after midnight. Rain showers and slight chance of
thunderstorms in the evening, then rain showers likely after
midnight. Waves 7 to 10 feet subsiding to 2 to 4 feet. Waves
occasionally to 13 feet. A small craft advisory may be needed.

$$

LSZ146-231615-
Port Wing to Sand Island WI-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots becoming south early in the
afternoon, then becoming east late in the afternoon. Sunny. Waves
1 to 2 feet.
.TONIGHT...East wind 15 to 20 knots with gusts to around
25 knots. Partly cloudy in the evening then becoming mostly
cloudy. Waves 1 to 2 feet building to 3 to 5 feet early in the
morning. A small craft advisory may be needed.
.FRIDAY...Northeast wind 20 to 25 knots. Gusts up to 30 knots
decreasing to 25 knots late in the afternoon. Chance of rain
showers in the morning, then rain showers and slight chance of
thunderstorms in the afternoon. Waves 7 to 10 feet. Waves
occasionally to 13 feet. A small craft advisory may be needed.
.FRIDAY NIGHT...Northeast wind 20 to 25 knots with gusts to
around 30 knots becoming southwest 15 to 20 knots after midnight.
Rain showers and slight chance of thunderstorms in the evening,
then rain showers likely after midnight. Waves 7 to 10 feet
subsiding to 2 to 4 feet. Waves occasionally to 12 feet. A small
craft advisory may be needed.

$$

LSZ147-231615-
Sand Island to Bayfield WI-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots becoming southeast late in the
afternoon. Sunny. Waves 1 to 2 feet.
.TONIGHT...East wind 5 to 10 knots rising to 15 to 20 knots with
gusts to around 25 knots after midnight. Partly cloudy in the
evening then becoming mostly cloudy. Waves 1 to 2 feet building
to 3 to 5 feet early in the morning. A small craft advisory may
be needed.
.FRIDAY...East wind 20 to 25 knots. Gusts up to 30 knots
decreasing to 25 knots late in the afternoon. Chance of rain
showers in the morning, then rain showers and slight chance of
thunderstorms in the afternoon. Waves 6 to 9 feet. Waves
occasionally to 11 feet. A small craft advisory may be needed.
.FRIDAY NIGHT...East wind 20 to 25 knots with gusts to around
30 knots becoming southeast 15 to 20 knots with gusts to around
25 knots late in the evening, then becoming southwest 10 to
15 knots with gusts to around 20 knots after midnight. Rain
showers and chance of thunderstorms in the evening, then rain
showers likely after midnight. 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.

$$

LSZ150-231615-
Outer Apostle Islands Beyond 5 NM from Mainland-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots becoming southeast late in the
afternoon. Sunny. Waves 1 to 3 feet.
.TONIGHT...East wind 5 to 10 knots rising to 20 to 25 knots with
gusts to around 30 knots after midnight. Partly cloudy. Waves
1 foot or less building to 3 to 5 feet. Waves occasionally to
7 feet. A small craft advisory may be needed.
.FRIDAY...East wind 20 to 25 knots with gusts to around 30 knots.
Slight chance of rain showers in the morning, then rain showers
likely and slight chance of thunderstorms in the afternoon. Waves
7 to 10 feet. Waves occasionally to 13 feet. A small craft
advisory may be needed.
.FRIDAY NIGHT...East wind 20 to 25 knots with gusts to around
30 knots becoming southeast late in the evening, then becoming
southwest 15 to 20 knots with gusts to around 25 knots after
midnight. Chance of thunderstorms in the evening. Rain showers
likely through the night. Waves 7 to 10 feet subsiding to 3 to
5 feet. Waves occasionally to 13 feet. A small craft advisory may
be needed.

$$

LSZ121-231615-
Chequamegon Bay-Bayfield to Oak Point WI-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots rising to 15 to 20 knots
with gusts to around 25 knots after midnight. Partly cloudy.
Waves 1 foot or less building to 3 to 5 feet. Waves occasionally
to 7 feet. A small craft advisory may be needed.
.FRIDAY...East wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots late in the afternoon. Chance of rain
showers through the day. Chance of thunderstorms in the
afternoon. Waves 4 to 6 feet subsiding to 1 to 3 feet late in the
afternoon. Waves occasionally to 8 feet. A small craft advisory
may be needed.
.FRIDAY NIGHT...East wind 15 to 20 knots with gusts to around
25 knots becoming southwest 10 to 15 knots with gusts to around
20 knots in the late evening and overnight. Chance of
thunderstorms in the evening. Rain showers likely through the
night. Waves 4 to 7 feet subsiding to 1 to 3 feet in the late
evening and overnight. Waves occasionally to 9 feet. A small
craft advisory may be needed.

$$

LSZ148-231615-
Oak Point to Saxon Harbor WI-
415 AM CDT Thu May 23 2024

.TODAY...West wind 5 to 10 knots becoming northwest late in the
morning, then becoming east in the afternoon. Sunny. Waves 1 foot
or less.
.TONIGHT...East wind 5 to 10 knots rising to 15 to 20 knots with
gusts to around 25 knots after midnight. Partly cloudy. Waves
1 foot or less building to 3 to 5 feet. Waves occasionally to
7 feet. A small craft advisory may be needed.
.FRIDAY...East wind 15 to 20 knots. Gusts up to 25 knots until
late afternoon. Chance of rain showers through the day. Chance of
thunderstorms in the afternoon. Waves 4 to 7 feet. Waves
occasionally to 9 feet. A small craft advisory may be needed.
.FRIDAY NIGHT...Southeast wind 15 to 20 knots with gusts to
around 25 knots becoming southwest 10 to 15 knots with gusts to
around 20 knots in the late evening and overnight. Chance of
thunderstorms in the evening. Rain showers likely through the
night. Waves 4 to 7 feet subsiding to 1 to 2 feet. Waves
occasionally to 9 feet. A small craft advisory may be needed.

$$

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

KML