904
FZUS53 KDLH 020859
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
359 AM 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.

LSZ140-141-021615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
359 AM CDT Tue Sep 2 2025

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

.TODAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Slight chance of rain showers in the morning.
Slight chance of thunderstorms late in the morning, then chance
of showers and thunderstorms in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots with gusts to around 20 knots
becoming northwest 15 to 20 knots with gusts to around 25 knots
early in the morning. 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...North wind 15 to 20 knots with gusts to around
25 knots. Slight chance of waterspouts. Chance of rain showers.
Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to
30 knots decreasing to 20 knots. Slight chance of waterspouts.
Chance of rain showers. Waves 1 to 3 feet.

$$

LSZ142-143-021615-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
359 AM CDT Tue Sep 2 2025

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

.TODAY...Southwest wind 10 to 15 knots. Slight chance of
thunderstorms in the morning. Chance of rain showers through the
day. Chance of thunderstorms in the afternoon. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots becoming northwest 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 to 2 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. Slight chance of rain
showers in the morning, then chance of rain showers in the
afternoon. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
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 2 feet.

$$

LSZ144-145-021615-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
359 AM CDT Tue Sep 2 2025

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

.TODAY...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms in the morning. Chance of rain showers through the
day. Chance of thunderstorms in the afternoon. Waves 1 foot or
less.
.TONIGHT...West wind 10 to 15 knots with gusts to around 20 knots
becoming northwest 15 to 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 to 3 feet.
.WEDNESDAY...Northwest wind 15 to 20 knots. Slight chance of
waterspouts in the morning. Chance of waterspouts in the
afternoon. Chance of rain showers through the day. Slight chance
of thunderstorms in the afternoon. Waves 1 to 3 feet.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots in the late evening and
overnight. 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.

$$

LSZ146-021615-
Port Wing to Sand Island WI-
359 AM CDT Tue Sep 2 2025

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

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

$$

LSZ147-021615-
Sand Island to Bayfield WI-
359 AM CDT Tue Sep 2 2025

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

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

$$

LSZ150-021615-
Outer Apostle Islands Beyond 5 NM from Mainland-
359 AM CDT Tue Sep 2 2025

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

.TODAY...Southwest wind 5 to 10 knots. Slight chance of rain
showers in the morning. Chance of showers and thunderstorms in
the afternoon. Waves 1 to 2 feet.
.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 3 to
5 feet after midnight. A small craft advisory may be needed.
.WEDNESDAY...Northwest wind 15 to 20 knots with gusts to around
25 knots. 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. Gusts up to
25 knots decreasing to 20 knots after midnight. Chance of
waterspouts. Chance of rain showers. Waves 3 to 5 feet. Waves
occasionally to 7 feet.

$$

LSZ121-021615-
Chequamegon Bay-Bayfield to Oak Point WI-
359 AM CDT Tue Sep 2 2025

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

.TODAY...Southwest wind 5 to 10 knots. Slight chance of sprinkles
early in the morning, then slight chance of rain showers late in
the morning. Chance of showers and thunderstorms in the
afternoon. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots becoming west 10 to
15 knots with gusts to around 20 knots after midnight. Rain
showers 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 with gusts to around
20 knots. Slight chance of waterspouts in the morning. Chance of
waterspouts in the afternoon. Chance of rain showers through the
day. Slight chance of thunderstorms in the afternoon. Waves
1 foot or less.
.WEDNESDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to
20 knots in the evening. Chance of waterspouts in the evening.
Slight chance of waterspouts after midnight. Chance of rain
showers through the night. Waves 1 foot or less.

$$

LSZ148-021615-
Oak Point to Saxon Harbor WI-
359 AM CDT Tue Sep 2 2025

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

.TODAY...Southwest wind 5 to 10 knots. Slight chance of sprinkles
early in the morning. Slight chance of rain showers late in the
morning, then chance of showers and thunderstorms in the
afternoon. Waves 1 foot or less.
.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 early in the morning. 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 early in the morning.
.WEDNESDAY...Northwest wind 15 to 20 knots. Gusts up to 25 knots
late in the afternoon. Chance of waterspouts through the day.
Chance of rain showers through the day. 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 easing to 10 knots early in the morning. Chance
of waterspouts. Chance of rain showers. Waves 2 to 4 feet
subsiding to 1 to 3 feet early in the morning.

$$

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

Huyck