410
FZUS53 KDLH 280249
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
949 PM CDT Wed Aug 27 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.

LSZ140-141-281015-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
949 PM CDT Wed Aug 27 2025

.REST OF TONIGHT...North wind 10 to 15 knots becoming northeast
after midnight. Gusts up to 20 knots. Chance of rain showers and
slight chance of thunderstorms late in the evening. Waves 1 to
2 feet building to 2 to 4 feet after midnight.
.THURSDAY...Northeast wind 10 to 15 knots becoming east in the
afternoon. Gusts up to 20 knots. Sunny. Waves 1 to 3 feet.
.THURSDAY NIGHT...Southeast wind 5 to 10 knots becoming south
early in the morning. Mostly clear. Waves 1 to 2 feet.
.FRIDAY...South wind 10 to 15 knots. Sunny. Waves 1 to 2 feet.

$$

LSZ143-281015-
Silver Bay Harbor to Two Harbors MN-
949 PM CDT Wed Aug 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT THURSDAY THROUGH
THURSDAY AFTERNOON...

.REST OF TONIGHT...West wind 5 knots becoming north after
midnight, then becoming northeast 10 to 15 knots with gusts to
around 20 knots toward daybreak. Slight chance of rain showers
late in the evening. Waves 1 foot or less building to 1 to 3 feet
toward daybreak.
.THURSDAY...East wind 10 to 15 knots with gusts to around
25 knots. Partly sunny in the morning then clearing. Waves 2 to 4
feet.
.THURSDAY NIGHT...East wind 5 to 10 knots. Mostly clear. Waves
1 to 3 feet subsiding to 1 to 2 feet in the late evening and
overnight.
.FRIDAY...Southeast wind 5 knots. Mostly sunny. Waves 1 foot or
less.

$$

LSZ142-281015-
Taconite Harbor to Silver Bay Harbor MN-
949 PM CDT Wed Aug 27 2025

.REST OF TONIGHT...West wind 5 knots becoming northeast 10 to
15 knots with gusts to around 20 knots after midnight. Slight
chance of rain showers late in the evening. Waves 1 foot or less
building to 1 to 3 feet toward daybreak.
.THURSDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots becoming east 5 to 10 knots late in the afternoon.
Sunny. Waves 2 to 4 feet.
.THURSDAY NIGHT...East wind 5 to 10 knots. Mostly clear. Waves
1 to 3 feet.
.FRIDAY...Southeast wind 5 knots. Sunny. Waves 1 foot or less.

$$

LSZ144-145-281015-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
949 PM CDT Wed Aug 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT THURSDAY THROUGH
THURSDAY AFTERNOON...

.REST OF TONIGHT...North wind 5 to 10 knots becoming northeast
10 to 15 knots with gusts to around 20 knots toward daybreak.
Slight chance of rain showers late in the evening. Waves 1 foot
or less building to 1 to 3 feet toward daybreak.
.THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots
in the morning. Partly sunny in the morning then clearing. Waves
3 to 5 feet.
.THURSDAY NIGHT...East wind 10 to 15 knots easing to 5 knots
after midnight. Mostly clear. Waves 1 to 3 feet subsiding to 1 to
2 feet in the late evening and overnight.
.FRIDAY...Southeast wind 5 knots becoming east in the afternoon.
Mostly sunny. Waves 1 foot or less.

$$

LSZ146-281015-
Port Wing to Sand Island WI-
949 PM CDT Wed Aug 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT THURSDAY THROUGH
THURSDAY AFTERNOON...

.REST OF TONIGHT...West wind 5 knots becoming north after
midnight, then becoming northeast 10 to 15 knots with gusts to
around 20 knots toward daybreak. Slight chance of rain showers
late in the evening. Waves 1 to 2 feet building to 2 to 4 feet
toward daybreak.
.THURSDAY...Northeast wind 10 to 15 knots with gusts to around
25 knots. Mostly sunny. Waves 3 to 5 feet.
.THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast
early in the morning. Mostly clear. Waves 1 to 3 feet subsiding
to 1 to 2 feet in the late evening and overnight.
.FRIDAY...South wind 5 knots becoming northeast in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ147-281015-
Sand Island to Bayfield WI-
949 PM CDT Wed Aug 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT THURSDAY THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...West wind 5 knots becoming north after
midnight, then becoming northeast 10 to 15 knots with gusts to
around 20 knots toward daybreak. Slight chance of rain showers
late in the evening. Waves 1 to 2 feet building to 2 to 4 feet
toward daybreak.
.THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 25 knots
until late afternoon. Mostly sunny. Waves 3 to 5 feet.
.THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast
early in the morning. Mostly clear. Waves 1 to 3 feet.
.FRIDAY...South wind 5 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ150-281015-
Outer Apostle Islands Beyond 5 NM from Mainland-
949 PM CDT Wed Aug 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT THURSDAY THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...West wind 5 to 10 knots becoming north 10 to
15 knots after midnight, then becoming northeast 15 to 20 knots
toward daybreak. Slight chance of showers and thunderstorms late
in the evening. Waves 1 foot or less building to 3 to 5 feet
after midnight.
.THURSDAY...Northeast wind 15 to 20 knots. Sunny. Waves 4 to
6 feet. Waves occasionally to 7 feet.
.THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast
early in the morning. Mostly clear. Waves 2 to 4 feet subsiding
to 1 to 2 feet after midnight.
.FRIDAY...South wind 5 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ121-281015-
Chequamegon Bay-Bayfield to Oak Point WI-
949 PM CDT Wed Aug 27 2025

.REST OF TONIGHT...Southwest wind 5 knots becoming northwest
after midnight, then becoming northeast 15 to 20 knots toward
daybreak. Slight chance of rain showers late in the evening.
Waves 1 foot or less building to 1 to 3 feet toward daybreak.
.THURSDAY...Northeast wind 15 to 20 knots easing to 10 to
15 knots in the afternoon. Partly sunny in the morning then
clearing. Waves 2 to 4 feet.
.THURSDAY NIGHT...East wind 5 to 10 knots becoming south early in
the morning. Mostly clear. Waves 1 to 2 feet.
.FRIDAY...South wind 5 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ148-281015-
Oak Point to Saxon Harbor WI-
949 PM CDT Wed Aug 27 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT THURSDAY THROUGH
THURSDAY EVENING...

.REST OF TONIGHT...Southwest wind 5 knots becoming northwest
after midnight, then becoming northeast 15 to 20 knots toward
daybreak. Slight chance of rain showers late in the evening.
Waves 1 to 2 feet building to 4 to 6 feet toward daybreak. Waves
occasionally to 7 feet.
.THURSDAY...Northeast wind 15 to 20 knots. Mostly sunny. Waves
4 to 6 feet. Waves occasionally to 8 feet.
.THURSDAY NIGHT...East wind 5 to 10 knots becoming southeast
after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to
2 feet after midnight.
.FRIDAY...South wind 5 knots becoming northeast in the afternoon.
Sunny. Waves 1 foot or less.

$$

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

NLy