614
FZUS53 KDLH 170806
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
306 AM CDT Fri Oct 17 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.

LSZ140-171615-
Grand Portage to Grand Marais MN-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...South wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Rain showers likely
early in the morning, then chance of rain showers late in the
morning. Slight chance of rain showers in the afternoon. Waves
1 to 3 feet.
.TONIGHT...Southwest wind 15 to 20 knots. Gusts up to 25 knots
decreasing to 20 knots after midnight. Slight chance of rain
showers in the evening. Waves 2 to 4 feet.
.SATURDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 to
3 feet subsiding to 1 to 2 feet in the late morning and
afternoon.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the late evening and overnight. Slight chance of rain
showers. Waves 1 to 2 feet.

$$

LSZ141-171615-
Grand Marais to Taconite Harbor MN-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...East wind 5 to 10 knots becoming south 10 to 15 knots
with gusts to around 25 knots in the afternoon. Rain showers
likely early in the morning, then chance of rain showers in the
late morning and early afternoon. Slight chance of rain showers
late in the afternoon. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Slight chance of rain showers in the evening. Waves 1 to 3 feet.
.SATURDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots after midnight. Slight chance of rain showers. Waves
1 foot or less.

$$

LSZ142-171615-
Taconite Harbor to Silver Bay Harbor MN-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...East wind 5 knots becoming southeast late in the
morning, then becoming south 10 to 15 knots with gusts to around
25 knots in the afternoon. Chance of rain showers in the morning,
then slight chance of rain showers in the afternoon. Waves 1 to
2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Mostly cloudy in the evening then becoming partly cloudy. Waves
1 to 2 feet.
.SATURDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 foot
or less.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots in the late evening and early morning. Mostly cloudy.
Waves 1 foot or less.

$$

LSZ143-171615-
Silver Bay Harbor to Two Harbors MN-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...East wind 5 knots becoming southeast with gusts to
around 20 knots late in the morning, then becoming southwest
10 to 15 knots with gusts to around 25 knots in the afternoon.
Chance of rain showers in the morning, then slight chance of rain
showers early in the afternoon. Waves 1 to 2 feet building to
1 to 3 feet late in the afternoon.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 3 feet.
.SATURDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 foot
or less.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Gusts up to
20 knots in the late evening and early morning. Slight chance of
rain showers in the evening. Waves 1 foot or less.

$$

LSZ144-171615-
Two Harbors to Duluth MN-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...Southeast wind 5 to 10 knots with gusts to around
20 knots becoming south 10 to 15 knots with gusts to around
25 knots in the late morning and early afternoon, then becoming
southwest 15 to 20 knots with gusts to around 25 knots late in
the afternoon. Chance of rain showers in the morning, then slight
chance of rain showers early in the afternoon. Waves 1 to 2 feet
building to 2 to 4 feet in the afternoon.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet after
midnight.
.SATURDAY...West wind 5 to 10 knots rising to 10 to 15 knots late
in the afternoon. Partly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Slight chance of rain showers. Waves 1 foot or
less.

$$

LSZ145-171615-
Duluth MN to Port Wing WI-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...South wind 10 to 15 knots with gusts to around 20 knots
becoming southwest 15 to 20 knots with gusts to around 25 knots
in the afternoon. Chance of rain showers in the morning, then
slight chance of rain showers early in the afternoon. Waves 1 to
3 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet after
midnight.
.SATURDAY...West wind 5 to 10 knots becoming 10 knots late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Slight chance of rain showers through the night.
Waves 1 to 2 feet.

$$

LSZ146-171615-
Port Wing to Sand Island WI-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...South wind 5 to 10 knots with gusts to around 20 knots
becoming southwest 10 to 15 knots with gusts to around 25 knots
in the afternoon. Chance of rain showers in the morning, then
slight chance of rain showers early in the afternoon. Waves 1 to
3 feet.
.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
25 knots easing to 5 to 10 knots with gusts to around 20 knots
after midnight. Partly cloudy. Waves 1 to 3 feet subsiding to
1 to 2 feet after midnight.
.SATURDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.
.SATURDAY NIGHT...Northwest wind 10 knots rising to 10 to
15 knots with gusts to around 20 knots late in the evening, then
easing to 5 to 10 knots with gusts to around 20 knots after
midnight. Slight chance of rain showers through the night. Waves
1 to 2 feet.

$$

LSZ147-171615-
Sand Island to Bayfield WI-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...South wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the afternoon. Chance of rain
showers in the morning, then slight chance of rain showers in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
until early morning. Partly cloudy. Waves 1 to 3 feet.
.SATURDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 to
2 feet.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the late evening and overnight. Slight chance of rain
showers through the night. Waves 1 to 2 feet.

$$

LSZ150-171615-
Outer Apostle Islands Beyond 5 NM from Mainland-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...South wind 10 to 15 knots with gusts to around 20 knots.
Chance of rain showers in the morning, then slight chance of rain
showers in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots after midnight. Partly cloudy. Waves 1 to
3 feet.
.SATURDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 to
2 feet.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the late evening and overnight. Slight chance of rain
showers through the night. Waves 1 to 2 feet.

$$

LSZ121-171615-
Chequamegon Bay-Bayfield to Oak Point WI-
306 AM CDT Fri Oct 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH THIS EVENING...

.TODAY...South wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of rain showers early in the morning, then chance of rain
showers late in the morning. Slight chance of rain showers in the
afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 2 feet.
.SATURDAY...Southwest wind 5 to 10 knots becoming west in the
afternoon. Mostly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Northwest wind 5 to 10 knots. Slight chance of
rain showers. Waves 1 foot or less.

$$

LSZ148-171615-
Oak Point to Saxon Harbor WI-
306 AM CDT Fri Oct 17 2025

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

.TODAY...South wind 10 to 15 knots with gusts to around 25 knots.
Slight chance of rain showers early in the morning, then chance
of rain showers late in the morning. Slight chance of rain
showers in the afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Partly cloudy. Waves 1 to 2 feet.
.SATURDAY...Southwest wind 5 to 10 knots becoming west in the
afternoon. Mostly sunny. Waves 1 foot or less.
.SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the late evening and overnight. Chance of rain
showers. Waves 1 to 2 feet.

$$

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

LE