404
FZUS53 KDLH 162037
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
337 PM CDT Thu Oct 16 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.

LSZ140-170415-
Grand Portage to Grand Marais MN-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
LATE FRIDAY NIGHT...

.TONIGHT...Southeast wind 10 to 15 knots with gusts to around
20 knots becoming south with gusts to around 20 knots late in the
night. Rain showers likely. Waves 1 to 3 feet.
.FRIDAY...South wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Chance of rain showers.
Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest wind 15 to 20 knots. Gusts up to
25 knots decreasing to 20 knots early in the morning. Chance of
rain showers in the evening. Waves 4 to 6 feet. Waves
occasionally to 7 feet.
.SATURDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the
late morning and afternoon. Mostly sunny. Waves 2 to 4 feet
subsiding to 1 to 3 feet in the late morning and afternoon.

$$

LSZ141-170415-
Grand Marais to Taconite Harbor MN-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...East wind 5 to 10 knots. Chance of rain showers early
in the evening, then rain showers likely in the late evening and
overnight. Waves 1 to 3 feet.
.FRIDAY...East wind 5 to 10 knots becoming south 10 to 15 knots
with gusts to around 20 knots late in the afternoon. Chance of
rain showers. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening increasing to 25 knots, then
decreasing to 20 knots after midnight. Slight chance of rain
showers in the evening. Waves 2 to 4 feet subsiding to 1 to
2 feet early in the morning.
.SATURDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.

$$

LSZ142-170415-
Taconite Harbor to Silver Bay Harbor MN-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...East wind 5 knots. Chance of rain showers early in the
evening, then rain showers likely and slight chance of
thunderstorms in the late evening and early morning. Chance of
rain showers late in the night. Waves 1 to 2 feet.
.FRIDAY...East wind 5 to 10 knots becoming south 10 to 15 knots
with gusts to around 20 knots in the afternoon. Chance of rain
showers through the day. Waves 1 to 2 feet.
.FRIDAY NIGHT...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 foot
or less.

$$

LSZ143-170415-
Silver Bay Harbor to Two Harbors MN-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...East wind 5 knots. Chance of rain showers through the
night. Slight chance of thunderstorms in the late evening and
early morning. Waves 1 to 2 feet.
.FRIDAY...East wind 5 to 10 knots becoming southwest 10 to
15 knots with gusts to around 25 knots in the afternoon. Chance
of rain showers through the day. Waves 1 to 2 feet building to
1 to 3 feet late in the afternoon.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots. Slight chance of rain showers in the evening. Waves
2 to 4 feet subsiding to 1 to 3 feet in the late evening and
overnight.
.SATURDAY...West wind 5 to 10 knots. Mostly sunny in the morning
then becoming mostly cloudy. Waves 1 foot or less.

$$

LSZ144-170415-
Two Harbors to Duluth MN-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...East wind 5 to 10 knots. Chance of rain showers. Waves
1 to 2 feet.
.FRIDAY...Southeast wind 10 to 15 knots becoming southwest 15 to
20 knots with gusts to around 25 knots late in the afternoon.
Chance of rain showers through the day. Waves 1 to 2 feet
building to 1 to 3 feet late in the afternoon.
.FRIDAY NIGHT...Southwest wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Slight chance of rain showers in the evening. Waves 2 to 4 feet
subsiding to 1 to 2 feet after midnight.
.SATURDAY...West wind 5 to 10 knots becoming northwest 10 to
15 knots with gusts to around 20 knots late in the afternoon.
Partly sunny. Waves 1 foot or less.

$$

LSZ145-170415-
Duluth MN to Port Wing WI-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...Southeast wind 5 to 10 knots becoming south 10 to
15 knots late in the night. Chance of rain showers. Waves 1 to
2 feet.
.FRIDAY...South wind 15 to 20 knots with gusts to around 25 knots
becoming southwest with gusts to around 25 knots late in the
afternoon. Chance of rain showers through the day. Waves 1 to
2 feet building to 1 to 3 feet late in the afternoon.
.FRIDAY NIGHT...Southwest wind 15 to 20 knots. Gusts up to
25 knots. Slight chance of rain showers in the evening. Waves
2 to 4 feet subsiding to 1 to 3 feet after midnight.
.SATURDAY...West wind 10 to 15 knots with gusts to around
20 knots becoming northwest with gusts to around 20 knots late in
the afternoon. Partly sunny. Waves 1 to 2 feet.

$$

LSZ146-170415-
Port Wing to Sand Island WI-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...Southeast wind 5 to 10 knots becoming south late in
the night. Chance of rain showers through the night. Slight
chance of thunderstorms in the late evening and early morning.
Waves 1 foot or less.
.FRIDAY...South wind 10 to 15 knots with gusts to around 25 knots
becoming southwest with gusts to around 25 knots late in the
afternoon. Chance of rain showers. Waves 1 to 3 feet.
.FRIDAY NIGHT...Southwest wind 15 to 20 knots with gusts to
around 25 knots easing to 5 to 10 knots early in the morning.
Slight chance of rain showers in the evening. Waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight.
.SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the
afternoon. Partly sunny. Waves 1 to 2 feet.

$$

LSZ147-170415-
Sand Island to Bayfield WI-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...Southeast wind 5 to 10 knots becoming south late in
the night. Slight chance of thunderstorms until early morning.
Chance of rain showers through the night. Waves 1 foot or less.
.FRIDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the
late morning and afternoon. Chance of rain showers. Waves 1 to
2 feet.
.FRIDAY NIGHT...Southwest wind 15 to 20 knots easing to 5 to
10 knots with gusts to around 20 knots in the late evening and
overnight. Slight chance of rain showers in the evening. Waves
2 to 4 feet subsiding to 1 to 2 feet after midnight.
.SATURDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot
or less.

$$

LSZ150-170415-
Outer Apostle Islands Beyond 5 NM from Mainland-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...Southeast wind 5 to 10 knots becoming south 10 to
15 knots with gusts to around 20 knots late in the night. Rain
showers likely and slight chance of thunderstorms in the evening,
then chance of rain showers after midnight. Waves 1 to 2 feet.
.FRIDAY...South wind 10 to 15 knots with gusts to around
20 knots. Chance of rain showers through the day. Waves 1 to
3 feet.
.FRIDAY NIGHT...Southwest wind 15 to 20 knots. Chance of rain
showers in the evening. Waves 2 to 4 feet subsiding to 1 to
3 feet after midnight.
.SATURDAY...West wind 5 to 10 knots becoming 10 knots late in the
afternoon. Mostly sunny. Waves 1 to 2 feet.

$$

LSZ121-170415-
Chequamegon Bay-Bayfield to Oak Point WI-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...

.TONIGHT...South wind 10 to 15 knots. Slight chance of
thunderstorms until early morning. Chance of rain showers through
the night. Waves 1 foot or less.
.FRIDAY...South wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots in the afternoon. Chance of rain showers.
Waves 1 to 2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the evening. 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.

$$

LSZ148-170415-
Oak Point to Saxon Harbor WI-
337 PM CDT Thu Oct 16 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING
THROUGH FRIDAY EVENING...

.TONIGHT...South wind 5 to 10 knots with gusts to around 20 knots
rising to 10 to 15 knots with gusts to around 25 knots late in
the night. Chance of rain showers and slight chance of
thunderstorms until early morning, then slight chance of rain
showers late in the night. Waves 1 to 2 feet.
.FRIDAY...South wind 10 to 15 knots with gusts to around
25 knots. Chance of rain showers through the day. Waves 1 to
2 feet.
.FRIDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots. Slight chance of rain showers in the evening. Waves
1 to 2 feet.
.SATURDAY...Southwest wind 5 to 10 knots becoming northwest in
the afternoon. Mostly sunny. Waves 1 foot or less.

$$

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

Britt