National Weather Service Marine Forecast FZUS53 KDLH
FZUS53 KDLH 241123
NSHDLH
Nearshore Marine Forecast
National Weather Service Duluth MN
522 AM CST Wed Dec 24 2025
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.
LSZ140-241700
Grand Portage to Grand Marais MN
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 to 10 knots becoming west in the afternoon.
Slight chance of snow early in the morning, then chance of
flurries late in the morning. Waves 1 to 2 feet.
TONIGHT
North wind 10 to 15 knots. Gusts up to 20 knots.
Partly cloudy. Waves 1 to 2 feet.
THURSDAY
Northeast wind 15 to 20 knots with gusts to around
25 knots becoming east with gusts to around 25 knots late in the
afternoon. Chance of 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.
THURSDAY NIGHT
Southeast wind 15 to 20 knots. Gusts up to
25 knots. Snow. Waves 4 to 6 feet. Waves occasionally to 8 feet.
A small craft advisory may be needed.
LSZ141-241700
Grand Marais to Taconite Harbor MN
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 to 10 knots becoming west in the afternoon.
Slight chance of snow early in the morning, then chance of
flurries late in the morning. Waves 1 foot or less.
TONIGHT
North wind 5 to 10 knots. Mostly clear. Waves 1 foot
or less.
THURSDAY
East wind 15 to 20 knots with gusts to around
25 knots. Chance of flurries through the day. 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.
THURSDAY NIGHT
Southeast wind 15 to 20 knots. Gusts up to
25 knots decreasing to 20 knots early in the morning. Slight
chance of light sleet in the evening. Snow through the night.
Waves 4 to 6 feet. Waves occasionally to 7 feet. A small craft
advisory may be needed.
LSZ142-241700
Taconite Harbor to Silver Bay Harbor MN
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming west in the afternoon.
Chance of flurries early in the morning. Waves 1 foot or less.
TONIGHT
North wind 5 to 10 knots becoming northeast early in
the morning. Mostly clear. Waves 1 foot or less.
THURSDAY
East wind 15 to 20 knots with gusts to around
25 knots. Chance of flurries through the day. Waves 1 to 3 feet
building to 3 to 5 feet in the afternoon. Waves occasionally to
7 feet. A small craft advisory may be needed.
THURSDAY NIGHT
Southeast wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Snow likely and slight chance of light sleet in the evening, then
snow and slight chance of light freezing rain after midnight.
Waves 3 to 5 feet. Waves occasionally to 7 feet. A small craft
advisory may be needed.
LSZ143-241700
Silver Bay Harbor to Two Harbors MN
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming west late in the afternoon.
Chance of flurries early in the morning. Waves 1 foot or less.
TONIGHT
North wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 20 knots after midnight. Mostly
clear. Waves 1 to 2 feet.
THURSDAY
East wind 15 to 20 knots. Gusts up to 25 knots in the
late morning and afternoon. Chance of flurries through the day.
Slight chance of light freezing drizzle in the afternoon. Waves
1 to 3 feet building to 3 to 5 feet in the late morning and
afternoon. A small craft advisory may be needed.
THURSDAY NIGHT
Southeast wind 10 to 15 knots with gusts to
around 20 knots easing to 5 knots early in the morning. Snow
likely in the evening. Slight chance of light sleet through the
night. Snow after midnight. Waves 3 to 5 feet subsiding to 1 to
3 feet early in the morning. A small craft advisory may be
needed.
LSZ144-241700
Two Harbors to Duluth MN
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming west late in the afternoon.
Chance of flurries early in the morning. Waves 1 foot or less.
TONIGHT
North wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 20 knots after midnight. Partly
cloudy. Waves 1 to 2 feet.
THURSDAY
East wind 15 to 20 knots with gusts to around
25 knots. Chance of light freezing drizzle and flurries in the
afternoon. Waves 3 to 5 feet. A small craft advisory may be
needed.
THURSDAY NIGHT
East wind 15 to 20 knots becoming southeast
5 to 10 knots after midnight. Snow, light freezing drizzle
likely, chance of light sleet and light freezing rain likely in
the evening, then snow, slight chance of light freezing rain and
light sleet after midnight. Waves 2 to 4 feet subsiding to 1 to
2 feet after midnight. A small craft advisory may be needed.
LSZ145-241700
Duluth MN to Port Wing WI
522 AM CST Wed Dec 24 2025
TODAY
Southeast wind 5 knots becoming west late in the
afternoon. Chance of flurries early in the morning. Waves 1 foot
or less.
TONIGHT
Northwest wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 20 knots in the late evening and
overnight. Partly cloudy. Waves 1 to 3 feet.
THURSDAY
East wind 15 to 20 knots with gusts to around
25 knots. Chance of flurries and light freezing drizzle in the
afternoon. Waves 2 to 4 feet. A small craft advisory may be
needed.
THURSDAY NIGHT
Southeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Snow, light freezing drizzle likely and
chance of light sleet in the evening, then snow, slight chance of
light freezing rain and light sleet after midnight. Waves 2 to
4 feet subsiding to 1 to 3 feet in the late evening and
overnight.
LSZ146-241700
Port Wing to Sand Island WI
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming west late in the afternoon.
Chance of flurries and slight chance of light sleet early in the
morning. Waves 1 foot or less.
TONIGHT
Northwest wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 20 knots early in the morning.
Partly cloudy. Waves 1 to 3 feet.
THURSDAY
East wind 15 to 20 knots with gusts to around
25 knots. Chance of flurries and light freezing drizzle in the
afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late
morning and afternoon.
THURSDAY NIGHT
Southeast wind 10 to 15 knots. Gusts up to
20 knots early in the evening. Snow likely in the evening. Slight
chance of light sleet through the night. Snow after midnight.
Waves 1 to 3 feet.
LSZ147-241700
Sand Island to Bayfield WI
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming west in the afternoon.
Chance of flurries and slight chance of light sleet early in the
morning. Waves 1 foot or less.
TONIGHT
Northwest wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 20 knots early in the morning.
Partly cloudy. Waves 1 to 2 feet.
THURSDAY
East wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots early in the afternoon, then decreasing to
20 knots late in the afternoon. Chance of flurries in the
afternoon. Waves 1 to 3 feet.
THURSDAY NIGHT
Southeast wind 10 to 15 knots with gusts to
around 20 knots easing to 5 knots early in the morning. Snow
likely in the evening, then snow after midnight. Waves 1 to
3 feet.
LSZ150-241700
Outer Apostle Islands Beyond 5 NM from Mainland
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 to 10 knots becoming southwest in the
afternoon. Chance of flurries, slight chance of light freezing
rain and light sleet early in the morning. Waves 1 foot or less.
TONIGHT
Northwest wind 5 to 10 knots becoming northeast 10 to
15 knots with gusts to around 20 knots early in the morning.
Partly cloudy in the evening then becoming mostly cloudy. Waves
1 to 2 feet building to 2 to 4 feet after midnight. A small craft
advisory may be needed.
THURSDAY
East wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Chance
of flurries in the afternoon. Waves 3 to 5 feet. A small craft
advisory may be needed.
THURSDAY NIGHT
Southeast wind 10 to 15 knots. Gusts up to
25 knots. Snow likely in the evening, then snow after midnight.
Waves 2 to 4 feet subsiding to 1 to 2 feet early in the morning.
A small craft advisory may be needed.
LSZ121-241700
Chequamegon Bay-Bayfield to Oak Point WI
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming southwest in the late
morning and afternoon. Chance of flurries, slight chance of light
freezing rain and light sleet early in the morning. Waves 1 foot
or less.
TONIGHT
Northwest wind 5 knots becoming north late in the
evening, then becoming northeast 10 to 15 knots with gusts to
around 20 knots after midnight. Partly cloudy in the evening then
becoming mostly cloudy. Waves 1 foot or less.
THURSDAY
East wind 10 to 15 knots. Gusts up to 20 knots until
late afternoon. Chance of flurries and slight chance of light
freezing drizzle in the afternoon. Waves 1 foot or less.
THURSDAY NIGHT
Southeast wind 5 to 10 knots. Chance of snow in
the evening. Slight chance of light sleet through the night. Snow
likely after midnight. Waves 1 foot or less.
LSZ148-241700
Oak Point to Saxon Harbor WI
522 AM CST Wed Dec 24 2025
TODAY
South wind 5 knots becoming southwest in the afternoon.
Chance of flurries, light sleet and slight chance of light
freezing rain early in the morning. Waves 1 foot or less.
TONIGHT
West wind 5 knots becoming north late in the evening,
then becoming northeast 10 to 15 knots with gusts to around
20 knots after midnight. Partly cloudy in the evening then
becoming mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet
early in the morning.
THURSDAY
East wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Chance
of flurries and slight chance of light freezing drizzle in the
afternoon. Waves 2 to 4 feet.
THURSDAY NIGHT
Southeast wind 10 to 15 knots becoming south
5 to 10 knots early in the morning. Chance of snow in the
evening, then snow likely and slight chance of rain after
midnight. Waves 1 to 3 feet.
Graphical marine forecasts are available online at: weather.gov/greatlakes
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