614
FZUS53 KDLH 120747
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
247 AM CDT Sun Oct 12 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.

LSZ140-121615-
Grand Portage to Grand Marais MN-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 15 to 20 knots with gusts to around
25 knots. Partly sunny. Waves 3 to 5 feet. Waves occasionally to
7 feet.
.TONIGHT...Southeast wind 15 to 20 knots with gusts to around
30 knots becoming south with gusts to around 30 knots early in
the morning. Chance of rain showers in the evening, then rain
showers after midnight. Waves 4 to 7 feet. Waves occasionally to
9 feet.
.MONDAY...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots late in the morning, then increasing to
25 knots in the afternoon. Slight chance of rain showers in the
morning. Waves 4 to 7 feet subsiding to 2 to 4 feet in the
afternoon. Waves occasionally to 9 feet.
.MONDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Partly cloudy. Waves 1 to 3 feet.

$$

LSZ141-121615-
Grand Marais to Taconite Harbor MN-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 10 to 15 knots with gusts to around
25 knots becoming east with gusts to around 25 knots late in the
afternoon. Mostly cloudy. Waves 2 to 4 feet.
.TONIGHT...Southeast wind 15 to 20 knots becoming south 5 to
10 knots after midnight, then becoming southwest early in the
morning. Rain showers. Waves 3 to 5 feet. Waves occasionally to
7 feet.
.MONDAY...West wind 10 to 15 knots with gusts to around 20 knots.
Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the
afternoon.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots in the evening. Partly cloudy. Waves 1 to 2 feet.

$$

LSZ142-121615-
Taconite Harbor to Silver Bay Harbor MN-
247 AM CDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
MONDAY MORNING...

.TODAY...Southeast wind 10 to 15 knots becoming east late in the
afternoon. Gusts up to 20 knots. Slight chance of rain showers
late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southeast wind 10 to 15 knots with gusts to around
20 knots becoming southwest 5 to 10 knots with gusts to around
25 knots early in the morning. Rain showers. Waves 1 to 3 feet.
.MONDAY...West wind 5 to 10 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Sunny.
Waves 1 to 2 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ143-121615-
Silver Bay Harbor to Two Harbors MN-
247 AM CDT Sun Oct 12 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
MONDAY MORNING...

.TODAY...Southeast wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain showers late in the afternoon.
Waves 1 to 2 feet.
.TONIGHT...Southeast wind 10 to 15 knots with gusts to around
20 knots becoming southwest with gusts to around 25 knots after
midnight. Rain showers. Waves 1 to 2 feet building to 2 to 4 feet
in the late evening and overnight.
.MONDAY...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Sunny.
Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots easing to 5 knots
early in the morning. Partly cloudy. Waves 1 foot or less.

$$

LSZ144-121615-
Two Harbors to Duluth MN-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 15 to 20 knots with gusts to around
25 knots. Slight chance of rain showers early in the afternoon.
Chance of rain showers late in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southeast wind 15 to 20 knots with gusts to around
25 knots becoming southwest 10 to 15 knots with gusts to around
30 knots after midnight. Rain showers likely in the evening, then
chance of rain showers after midnight. Waves 2 to 4 feet.
.MONDAY...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Sunny.
Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ145-121615-
Duluth MN to Port Wing WI-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots late in the afternoon. Slight chance of
rain showers in the afternoon. Waves 1 to 3 feet.
.TONIGHT...South wind 15 to 20 knots with gusts to around
30 knots becoming southwest 10 to 15 knots with gusts to around
30 knots after midnight. Rain showers likely through the night.
Waves 1 to 3 feet building to 2 to 4 feet in the late evening and
overnight.
.MONDAY...West wind 10 to 15 knots with gusts to around 20 knots.
Sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
Waves 1 to 2 feet.

$$

LSZ146-121615-
Port Wing to Sand Island WI-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 10 to 15 knots with gusts to around
25 knots. Slight chance of rain showers late in the afternoon.
Waves 1 to 2 feet.
.TONIGHT...South wind 10 to 15 knots becoming southwest after
midnight. Gusts up to 25 knots. Rain showers likely. Waves 1 to
2 feet building to 1 to 3 feet early in the morning.
.MONDAY...West wind 10 to 15 knots with gusts to around 20 knots.
Sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots with gusts to around
20 knots becoming 10 knots early in the morning. Partly cloudy.
Waves 1 to 2 feet.

$$

LSZ147-121615-
Sand Island to Bayfield WI-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 10 to 15 knots with gusts to around
25 knots. Partly sunny. Waves 1 to 2 feet.
.TONIGHT...Southeast wind 10 to 15 knots with gusts to around
25 knots becoming southwest with gusts to around 30 knots after
midnight. Rain showers likely in the evening, then rain showers
after midnight. Waves 1 to 2 feet.
.MONDAY...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Sunny.
Waves 1 to 3 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots. Partly cloudy. Waves 1 to 2 feet.

$$

LSZ150-121615-
Outer Apostle Islands Beyond 5 NM from Mainland-
247 AM CDT Sun Oct 12 2025

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

.TODAY...Southeast wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the afternoon. Partly sunny. Waves 1 to
3 feet building to 2 to 4 feet late in the afternoon.
.TONIGHT...Southeast wind 15 to 20 knots with gusts to around
30 knots becoming southwest 10 to 15 knots with gusts to around
30 knots after midnight. Rain showers likely in the evening, then
rain showers after midnight. Waves 3 to 5 feet.
.MONDAY...West wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots late in the afternoon. Slight chance of
rain showers in the morning. Waves 2 to 4 feet.
.MONDAY NIGHT...West wind 10 to 15 knots with gusts to around
20 knots becoming northwest 5 to 10 knots with gusts to around
20 knots in the late evening and overnight. Partly cloudy. Waves
1 to 3 feet.

$$

LSZ121-121615-
Chequamegon Bay-Bayfield to Oak Point WI-
247 AM CDT Sun Oct 12 2025

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

.TODAY...South wind 10 to 15 knots with gusts to around 25 knots.
Mostly cloudy. Waves 1 to 2 feet.
.TONIGHT...South wind 10 to 15 knots with gusts to around
30 knots becoming southwest with gusts to around 30 knots after
midnight. Rain showers likely in the evening, then rain showers
after midnight. Waves 1 to 2 feet.
.MONDAY...West wind 5 to 10 knots with gusts to around 20 knots.
Sunny. Waves 1 foot or less.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ148-121615-
Oak Point to Saxon Harbor WI-
247 AM CDT Sun Oct 12 2025

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

.TODAY...South wind 10 to 15 knots. Gusts up to 25 knots
increasing to 30 knots late in the afternoon. Partly sunny. Waves
1 to 2 feet building to 1 to 3 feet late in the afternoon.
.TONIGHT...South wind 15 to 20 knots with gales to around
35 knots becoming southwest with gales to around 35 knots after
midnight. Rain showers likely in the evening, then rain showers
after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet early
in the morning. A gale warning may be needed.
.MONDAY...Southwest wind 10 knots becoming west in the late
morning and early afternoon, then easing to 10 knots late in the
afternoon. Gusts up to 20 knots. Slight chance of rain showers in
the morning. Waves 1 to 2 feet.
.MONDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

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

NLy