291
FZUS53 KDLH 021849
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
149 PM CDT Tue Sep 2 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.

LSZ140-141-030415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots becoming northwest 15 to 20 knots with gusts to around
30 knots after midnight. Rain showers likely and chance of
thunderstorms in the evening, then chance of rain showers and
slight chance of thunderstorms after midnight. Slight chance of
waterspouts after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Northwest wind 15 to 20 knots with gusts to around
30 knots. Slight chance of waterspouts through the day. Chance of
sprinkles in the morning. Chance of rain showers in the
afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 25 knots. Slight chance of waterspouts through the night.
Chance of rain showers in the evening. Slight chance of rain
showers after midnight. Waves 1 to 3 feet.
.THURSDAY...West wind 10 to 15 knots. Gusts up to 25 knots
decreasing to 20 knots in the late morning and afternoon. Chance
of waterspouts in the morning. Chance of rain showers through the
day. Waves 1 to 2 feet.

$$

LSZ142-143-030415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...West wind 5 to 10 knots with gusts to around 20 knots
becoming northwest 10 to 15 knots with gusts to around 25 knots
after midnight. Rain showers likely and chance of thunderstorms
in the evening, then chance of rain showers after midnight.
Chance of sprinkles late in the night. Slight chance of
waterspouts after midnight. Waves 1 to 2 feet.
.WEDNESDAY...Northwest wind 10 to 15 knots with gusts to around
25 knots. Slight chance of waterspouts in the morning, then
chance of waterspouts in the afternoon. Chance of sprinkles in
the morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots in the late evening and
overnight. Chance of rain showers in the evening. Slight chance
of waterspouts through the night. Waves 1 to 2 feet.
.THURSDAY...West wind 5 to 10 knots with gusts to around
20 knots. Chance of sprinkles in the morning, then chance of rain
showers in the afternoon. Waves 1 foot or less.

$$

LSZ144-145-030415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...West wind 5 to 10 knots with gusts to around 20 knots
becoming northwest 15 to 20 knots with gusts to around 25 knots
after midnight. Rain showers likely and chance of thunderstorms
in the evening, then chance of rain showers after midnight.
Chance of sprinkles late in the night. Slight chance of
waterspouts after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots. Slight chance of waterspouts in the morning, then
chance of waterspouts in the afternoon. Chance of sprinkles in
the morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Slight chance of waterspouts. . Waves 1 to
3 feet.
.THURSDAY...West wind 10 to 15 knots easing to 5 to 10 knots in
the afternoon. Gusts up to 20 knots. Chance of rain showers in
the afternoon. Waves 1 to 2 feet.

$$

LSZ146-030415-
Port Wing to Sand Island WI-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots becoming northwest 15 to 20 knots with gusts to around
25 knots after midnight. Rain showers likely and chance of
thunderstorms in the evening, then chance of rain showers and
slight chance of thunderstorms after midnight. Chance of
sprinkles late in the night. Slight chance of waterspouts after
midnight. Waves 1 to 2 feet building to 1 to 3 feet late in the
night.
.WEDNESDAY...Northwest wind 10 to 15 knots with gusts to around
25 knots. Slight chance of waterspouts in the morning, then
chance of waterspouts in the afternoon. Chance of sprinkles in
the morning, then chance of rain showers and slight chance of
thunderstorms in the afternoon. Waves 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots after midnight, then increasing
to 25 knots early in the morning. Chance of rain showers in the
evening. Slight chance of waterspouts through the night. Waves
2 to 4 feet subsiding to 1 to 3 feet after midnight.
.THURSDAY...West wind 10 to 15 knots with gusts to around
25 knots easing to 5 to 10 knots with gusts to around 20 knots
late in the afternoon. Slight chance of waterspouts in the
morning. Chance of rain showers in the afternoon. Waves 1 to
2 feet.

$$

LSZ147-030415-
Sand Island to Bayfield WI-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots becoming northwest 15 to 20 knots with gusts to around
25 knots after midnight. Rain showers likely and chance of
thunderstorms in the evening, then chance of rain showers and
slight chance of thunderstorms after midnight. Slight chance of
waterspouts after midnight. Waves 1 to 3 feet building to 2 to
4 feet late in the night.
.WEDNESDAY...Northwest wind 15 to 20 knots easing to 5 to
15 knots early in the afternoon, then rising to 15 to 20 knots
late in the afternoon. Gusts up to 25 knots. Slight chance of
waterspouts in the morning, then chance of waterspouts in the
afternoon. Chance of sprinkles in the morning, then chance of
rain showers in the afternoon. Waves 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
25 knots decreasing to 20 knots after midnight, then increasing
to 25 knots early in the morning. Chance of rain showers in the
evening. Chance of waterspouts through the night. Waves 2 to
4 feet subsiding to 1 to 3 feet early in the morning.
.THURSDAY...West wind 10 to 15 knots with gusts to around
25 knots easing to 10 knots with gusts to around 20 knots late in
the afternoon. Slight chance of waterspouts in the morning.
Chance of sprinkles in the morning, then chance of rain showers
in the afternoon. Waves 1 to 3 feet.

$$

LSZ150-030415-
Outer Apostle Islands Beyond 5 NM from Mainland-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots becoming northwest 15 to 20 knots with gusts to around
30 knots after midnight. Rain showers likely and chance of
thunderstorms in the evening, then chance of rain showers and
slight chance of thunderstorms after midnight. Slight chance of
waterspouts after midnight. Waves 1 to 3 feet building to 3 to
5 feet after midnight.
.WEDNESDAY...Northwest wind 15 to 20 knots. Gusts up to 25 knots
increasing to 30 knots late in the afternoon. Chance of rain
showers through the day. Chance of waterspouts in the afternoon.
Waves 3 to 5 feet. Waves occasionally to 7 feet.
.WEDNESDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 30 knots easing to 10 to 15 knots with gusts to around
25 knots after midnight. Chance of waterspouts through the night.
Slight chance of thunderstorms in the evening. Chance of rain
showers through the night. Waves 3 to 5 feet. Waves occasionally
to 7 feet.
.THURSDAY...West wind 10 to 15 knots with gusts to around
25 knots becoming west 10 to 15 knots with gusts to around
20 knots late in the afternoon. Chance of waterspouts in the
morning. Slight chance of waterspouts in the afternoon. Chance of
rain showers through the day. Waves 2 to 4 feet subsiding to 1 to
3 feet late in the afternoon.

$$

LSZ121-030415-
Chequamegon Bay-Bayfield to Oak Point WI-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...Southwest wind 5 to 10 knots becoming northwest 10 to
15 knots with gusts to around 20 knots after midnight. Rain
showers likely and chance of thunderstorms in the evening, then
chance of rain showers and slight chance of thunderstorms after
midnight. Slight chance of waterspouts after midnight. Waves
1 foot or less.
.WEDNESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the morning, then decreasing to
20 knots in the afternoon. Slight chance of waterspouts in the
morning, then chance of waterspouts in the afternoon. Slight
chance of rain showers in the morning, then chance of rain
showers and slight chance of thunderstorms in the afternoon.
Waves 1 foot or less.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots with gusts to
around 20 knots. Chance of rain showers in the evening. Chance of
waterspouts in the evening, then slight chance of waterspouts
after midnight. Waves 1 foot or less.
.THURSDAY...West wind 10 to 15 knots with gusts to around
20 knots easing to 5 to 10 knots with gusts to around 20 knots in
the late morning and afternoon. Slight chance of waterspouts in
the morning. Chance of sprinkles in the morning, then chance of
rain showers in the afternoon. Waves 1 foot or less.

$$

LSZ148-030415-
Oak Point to Saxon Harbor WI-
149 PM CDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CDT TONIGHT
THROUGH LATE WEDNESDAY NIGHT...

.TONIGHT...Southwest wind 10 knots becoming west with gusts to
around 20 knots in the late evening and early morning, then
becoming northwest 15 to 20 knots with gusts to around 25 knots
late in the night. Rain showers likely and chance of
thunderstorms in the evening, then chance of rain showers and
slight chance of thunderstorms after midnight. Chance of
waterspouts after midnight. Waves 1 to 2 feet building to 1 to
3 feet late in the night.
.WEDNESDAY...Northwest wind 15 to 20 knots with gusts to around
25 knots. Chance of waterspouts through the day. Slight chance of
rain showers in the morning. Chance of rain showers and slight
chance of thunderstorms in the afternoon. Waves 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest wind 15 to 20 knots with gusts to
around 25 knots. Chance of waterspouts through the night. Chance
of rain showers and slight chance of thunderstorms in the
evening. Chance of sprinkles after midnight. Waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning.
.THURSDAY...West wind 10 to 15 knots with gusts to around
25 knots easing to 10 knots with gusts to around 20 knots late in
the afternoon. Slight chance of waterspouts in the morning.
Chance of sprinkles in the morning, then chance of rain showers
in the afternoon. Waves 1 to 2 feet.

$$

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

JDS