197
FZUS53 KDLH 281446
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
946 AM CDT Thu Aug 28 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.

LSZ140-141-282215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
946 AM CDT Thu Aug 28 2025

.REST OF TODAY...East wind 10 to 15 knots. Sunny. Waves 1 to
2 feet.
.TONIGHT...East wind 10 to 15 knots becoming southeast 5 knots
early in the morning. Mostly clear. Waves 1 to 2 feet.
.FRIDAY...South wind 5 to 10 knots. Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...South wind 5 to 10 knots becoming west in the
late evening and overnight. Mostly clear. Waves 1 foot or less.

$$

LSZ143-282215-
Silver Bay Harbor to Two Harbors MN-
946 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

.REST OF TODAY...Northeast wind 10 to 15 knots with gusts to
around 20 knots. Sunny. Waves 2 to 4 feet.
.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
easing to 5 knots after midnight. Mostly clear. Waves 1 to
3 feet.
.FRIDAY...East wind 5 knots. Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots becoming northwest early in the
morning. Partly cloudy. Waves 1 foot or less.

$$

LSZ142-282215-
Taconite Harbor to Silver Bay Harbor MN-
946 AM CDT Thu Aug 28 2025

.REST OF TODAY...East wind 5 to 10 knots. Sunny. Waves 1 to
3 feet.
.TONIGHT...East wind 5 to 10 knots. Mostly clear. Waves 1 to
2 feet.
.FRIDAY...East wind 5 knots becoming southeast in the late
morning and afternoon. Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots becoming northeast late in the
evening, then becoming northwest after midnight. Mostly clear.
Waves 1 foot or less.

$$

LSZ144-145-282215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
946 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

.REST OF TODAY...Northeast wind 15 to 20 knots. Partly sunny late
in the morning then clearing. Waves 2 to 4 feet.
.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
easing to 5 knots early in the morning. 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.
.FRIDAY NIGHT...East wind 5 knots. Partly cloudy. Waves 1 foot or
less.

$$

LSZ146-282215-
Port Wing to Sand Island WI-
946 AM CDT Thu Aug 28 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

.REST OF TODAY...Northeast wind 10 to 15 knots with gusts to
around 20 knots. Sunny. Waves 2 to 4 feet.
.TONIGHT...East wind 10 to 15 knots becoming southeast 5 knots
after midnight. Mostly clear. Waves 1 to 2 feet.
.FRIDAY...Southeast wind 5 knots becoming northeast in the
afternoon. Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots becoming southwest early in the
morning. Partly cloudy. Waves 1 foot or less.

$$

LSZ147-282215-
Sand Island to Bayfield WI-
946 AM CDT Thu Aug 28 2025

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

.REST OF TODAY...East wind 10 to 15 knots easing to 5 to 10 knots
in the afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to
3 feet late.
.TONIGHT...East wind 5 to 10 knots becoming southeast 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.
.FRIDAY NIGHT...East wind 5 knots becoming southwest early in the
morning. Mostly clear. Waves 1 foot or less.

$$

LSZ150-282215-
Outer Apostle Islands Beyond 5 NM from Mainland-
946 AM CDT Thu Aug 28 2025

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

.REST OF TODAY...East wind 10 to 15 knots. Gusts up to 20 knots
in the afternoon. Sunny. Waves 4 to 6 feet subsiding to 2 to
4 feet late. Waves occasionally to 8 feet.
.TONIGHT...East wind 10 to 15 knots becoming southeast 5 knots
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 east in the afternoon.
Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 to 10 knots becoming southwest early
in the morning. Mostly clear. Waves 1 foot or less.

$$

LSZ121-282215-
Chequamegon Bay-Bayfield to Oak Point WI-
946 AM CDT Thu Aug 28 2025

.REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Partly sunny late in the morning then
clearing. Waves 1 to 2 feet building to 4 to 6 feet early in the
afternoon, then subsiding to 1 to 2 feet late. Waves occasionally
to 8 feet.
.TONIGHT...East wind 10 to 15 knots becoming southeast 5 knots
after midnight, then becoming south early in the morning. Mostly
clear. Waves 1 to 2 feet.
.FRIDAY...South wind 5 knots becoming east in the afternoon.
Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 to 10 knots becoming southwest after
midnight. Mostly clear. Waves 1 foot or less.

$$

LSZ148-282215-
Oak Point to Saxon Harbor WI-
946 AM CDT Thu Aug 28 2025

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

.REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Sunny. Waves 4 to 6 feet. Waves
occasionally to 8 feet.
.TONIGHT...East wind 10 to 15 knots becoming southeast 5 knots
after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late evening and overnight.
.FRIDAY...South wind 5 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 to 10 knots becoming south after
midnight. Mostly clear. Waves 1 foot or less.

$$

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

JDS