Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 040310
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1010 PM CDT Sun Aug 3 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.

LSZ140-041015-
Grand Portage to Grand Marais MN-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...West wind 5 to 10 knots. Areas of smoke
through the night. Waves 1 foot or less.
.MONDAY...Northeast wind 5 knots becoming east in the late
morning and afternoon. Areas of smoke through the day. Chance of
sprinkles in the morning. Chance of rain showers in the
afternoon. Waves 1 foot or less.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Areas of smoke in
the evening. Chance of sprinkles in the evening. Waves 1 foot or
less.
.TUESDAY...East wind 5 to 10 knots. Mostly sunny. Waves 1 foot or
less.

$$

LSZ141>143-041015-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...Northeast wind 5 knots becoming north after
midnight. Areas of smoke through the night. Chance of sprinkles
late in the evening. Chance of sprinkles toward daybreak. Waves
1 foot or less.
.MONDAY...Northeast wind 5 to 10 knots. Areas of smoke through
the day. Chance of showers in the morning. Slight chance of
showers in the afternoon. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Areas of smoke in
the evening. Slight chance of showers in the evening. Waves 1 to
2 feet.
.TUESDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ144-145-041015-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...Southeast wind 5 knots becoming northeast
after midnight. Areas of smoke. Chance of sprinkles. Waves 1 foot
or less.
.MONDAY...Northeast wind 10 to 15 knots. Areas of smoke. Slight
chance of showers. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 10 to 15 knots. Areas of smoke in
the evening. Slight chance of showers in the evening. Waves 1 to
2 feet.
.TUESDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.

$$

LSZ146-041015-
Port Wing to Sand Island WI-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...South wind 5 knots becoming east toward
daybreak. Areas of smoke through the night. Chance of sprinkles
late in the evening. Chance of sprinkles toward daybreak. Waves
1 foot or less.
.MONDAY...East wind 5 knots becoming northeast 10 to 15 knots in
the afternoon. Chance of sprinkles in the morning, then slight
chance of showers in the afternoon. Waves 1 foot or less.
.MONDAY NIGHT...East wind 5 to 10 knots. Areas of smoke in the
evening. Slight chance of showers in the evening. Waves 1 to
2 feet.
.TUESDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ147-041015-
Sand Island to Bayfield WI-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...South wind 5 knots. Areas of smoke through the
night. Chance of sprinkles toward daybreak. Waves 1 foot or less.
.MONDAY...Southeast wind 5 knots becoming east in the afternoon.
Areas of smoke through the day. Chance of sprinkles in the
morning. Chance of showers in the afternoon. Waves 1 foot or
less.
.MONDAY NIGHT...East wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.TUESDAY...East wind 5 knots. Partly sunny. Waves 1 foot or less.

$$

LSZ150-041015-
Outer Apostle Islands Beyond 5 NM from Mainland-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...South wind 5 knots. Areas of smoke. Waves
1 foot or less.
.MONDAY...Southeast wind 5 knots becoming east in the late
morning and afternoon. Areas of smoke through the day. Chance of
sprinkles in the morning. Chance of showers in the afternoon.
Waves 1 foot or less.
.MONDAY NIGHT...East wind 5 to 10 knots. Areas of smoke in the
evening. Chance of sprinkles in the evening. Waves 1 to 2 feet.
.TUESDAY...East wind 5 knots rising to 5 to 10 knots late in the
afternoon. Partly sunny. Waves 1 to 2 feet.

$$

LSZ121-041015-
Chequamegon Bay-Bayfield to Oak Point WI-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...Variable winds 10 knots or less becoming
southwest 5 knots after midnight. Areas of smoke through the
night. Waves 1 foot or less.
.MONDAY...South wind 5 knots becoming east in the late morning
and afternoon. Areas of smoke through the day. Chance of
sprinkles in the morning. Chance of showers in the afternoon.
Waves 1 foot or less.
.MONDAY NIGHT...Northeast wind 5 knots becoming southeast early
in the morning. Areas of smoke in the evening. Chance of
sprinkles in the evening. Waves 1 foot or less.
.TUESDAY...Southeast wind 5 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ148-041015-
Oak Point to Saxon Harbor WI-
1010 PM CDT Sun Aug 3 2025

.REST OF TONIGHT...Southwest wind 5 knots. Areas of smoke. Waves
1 foot or less.
.MONDAY...South wind 5 knots becoming northeast in the late
morning and afternoon. Areas of smoke through the day. Chance of
sprinkles through the day. Waves 1 foot or less.
.MONDAY NIGHT...East wind 5 to 10 knots becoming southeast after
midnight. Areas of smoke in the evening. Chance of sprinkles in
the evening. Waves 1 foot or less.
.TUESDAY...Southeast wind 5 knots becoming east late in the
afternoon. Mostly sunny. Waves 1 foot or less.

$$

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

NLy