272
FZUS53 KDLH 052226
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
526 PM CDT Tue Aug 5 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.

LSZ140-141-060415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
526 PM CDT Tue Aug 5 2025

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the evening. Partly cloudy in the evening then becoming mostly
cloudy. Waves 1 to 2 feet.
.WEDNESDAY...East wind 5 to 10 knots. Gusts up to 20 knots late
in the afternoon. Areas of smoke in the morning. Slight chance of
rain showers in the morning, then chance of rain showers in the
afternoon. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...East wind 5 to 10 knots with gusts to around
20 knots becoming southeast after midnight. Chance of showers and
thunderstorms. Waves 1 to 2 feet.
.THURSDAY...South wind 5 to 10 knots. Chance of thunderstorms in
the morning. Slight chance of showers through the day. Slight
chance of thunderstorms in the afternoon. Waves 1 to 2 feet.

$$

LSZ142-143-060415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
526 PM CDT Tue Aug 5 2025

.TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the evening. Slight chance of showers after midnight. Waves 1 to
3 feet.
.WEDNESDAY...Northeast wind 5 to 10 knots. Chance of showers
through the day. Slight chance of thunderstorms in the afternoon.
Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Northeast wind 5 to 10 knots becoming
southeast after midnight. Chance of showers and thunderstorms.
Waves 1 to 2 feet.
.THURSDAY...South wind 5 knots. Slight chance of showers and
thunderstorms. Waves 1 foot or less.

$$

LSZ144-145-060415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
526 PM CDT Tue Aug 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CDT THIS EVENING...

.TONIGHT...Northeast wind 15 to 20 knots with gusts to 25 knots becoming
east 5 to 10 knots after midnight. Areas of smoke through the
night. Chance of showers after midnight. Waves 2 to 4 feet.
.WEDNESDAY...East wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Chance of showers through the day. Slight chance
of thunderstorms in the afternoon. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...East wind 5 to 10 knots becoming south after
midnight. Chance of showers and thunderstorms. Waves 1 foot or
less.
.THURSDAY...South wind 5 to 10 knots. Chance of showers in the
morning. Slight chance of thunderstorms through the day. Slight
chance of showers in the afternoon. Waves 1 foot or less.

$$

LSZ146-060415-
Port Wing to Sand Island WI-
526 PM CDT Tue Aug 5 2025

.TONIGHT...East wind 5 to 10 knots becoming southeast late in the
night. Areas of smoke through the night. Slight chance of showers
after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Southeast wind 5 to 10 knots. Gusts up to 20 knots
late in the morning. Slight chance of showers in the morning,
then chance of showers and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast wind 5 to 10 knots becoming south
after midnight. Chance of showers and thunderstorms. Waves 1 foot
or less.
.THURSDAY...South wind 5 knots. Slight chance of showers and
thunderstorms. Waves 1 foot or less.

$$

LSZ147-060415-
Sand Island to Bayfield WI-
526 PM CDT Tue Aug 5 2025

.TONIGHT...East wind 5 to 10 knots becoming southeast after
midnight. Areas of smoke through the night. Waves 1 to 2 feet.
.WEDNESDAY...Southeast wind 5 to 10 knots. Gusts up to 20 knots
late in the morning. Areas of smoke through the day. Slight
chance of showers in the morning. Chance of showers in the
afternoon. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast wind 5 to 10 knots becoming south
after midnight. Chance of showers and thunderstorms. Waves 1 foot
or less.
.THURSDAY...South wind 5 knots. Chance of thunderstorms in the
morning. Slight chance of showers through the day. Slight chance
of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ150-060415-
Outer Apostle Islands Beyond 5 NM from Mainland-
526 PM CDT Tue Aug 5 2025

.TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots
becoming southeast 5 to 10 knots with gusts to around 20 knots
after midnight. Areas of smoke early in the evening. Areas of
smoke late in the night. Waves 1 to 3 feet.
.WEDNESDAY...Southeast wind 5 to 10 knots with gusts to around
20 knots becoming east late in the afternoon. Areas of smoke in
the morning. Slight chance of showers in the morning, then chance
of showers in the afternoon. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Southeast wind 5 to 10 knots becoming south
after midnight. Chance of showers in the evening. Chance of
thunderstorms through the night. Showers likely after midnight.
Waves 1 foot or less.
.THURSDAY...South wind 5 to 10 knots. Chance of thunderstorms in
the morning. Slight chance of showers through the day. Slight
chance of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ121-060415-
Chequamegon Bay-Bayfield to Oak Point WI-
526 PM CDT Tue Aug 5 2025

.TONIGHT...East wind 5 to 10 knots becoming southeast after
midnight. Areas of smoke through the night. Waves 1 to 2 feet.
.WEDNESDAY...Southeast wind 5 to 10 knots. Areas of smoke through
the day. Slight chance of showers in the morning. Chance of
showers and slight chance of thunderstorms in the afternoon.
Waves 1 foot or less.
.WEDNESDAY NIGHT...South wind 5 to 10 knots. Chance of showers
and thunderstorms. Waves 1 foot or less.
.THURSDAY...South wind 5 to 10 knots. Chance of thunderstorms in
the morning. Chance of showers through the day. Slight chance of
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ148-060415-
Oak Point to Saxon Harbor WI-
526 PM CDT Tue Aug 5 2025

.TONIGHT...East wind 5 to 10 knots becoming southeast after
midnight. Areas of smoke early in the evening. Areas of smoke
after midnight. Waves 1 to 3 feet.
.WEDNESDAY...Southeast wind 5 to 10 knots. Areas of smoke in the
morning. Slight chance of showers in the afternoon. Waves 1 foot
or less.
.WEDNESDAY NIGHT...South wind 5 to 10 knots. Chance of showers
and thunderstorms. Waves 1 foot or less.
.THURSDAY...South wind 5 to 10 knots. Chance of thunderstorms in
the morning. Chance of showers through the day. Slight chance of
thunderstorms in the afternoon. Waves 1 foot or less.

$$

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

Rothstein