Nearshore Marine Forecast
Issued by NWS Duluth, MN

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FZUS53 KDLH 301500
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1000 AM CDT Wed Jul 30 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.

LSZ140-141-302200-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 knots becoming east late. Areas
of smoke through the day. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots becoming north early in the
morning. Areas of smoke in the evening. Waves 1 foot or less.
.THURSDAY...North wind 5 knots becoming south in the afternoon.
Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...Southwest wind 5 to 10 knots becoming west in
the late evening and overnight. Mostly clear. Waves 1 foot or
less.

$$

LSZ142-143-302200-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Patchy smoke in
the late morning and early afternoon. Areas of smoke late. Waves
1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots becoming north early in
the morning. Areas of smoke in the evening. Waves 1 foot or less.
.THURSDAY...North wind 5 knots becoming southeast in the
afternoon. Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...Southeast wind 5 knots early in the evening
becoming variable 10 knots or less, then becoming west 5 knots
early in the morning. Mostly clear. Waves 1 foot or less.

$$

LSZ144-145-302200-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 10 to 15 knots. Areas of smoke
through the day. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke in the
evening. Patchy smoke after midnight. Waves 1 foot or less.
.THURSDAY...Northeast wind 5 knots. Sunny. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 knots in the evening becoming
variable 10 knots or less, then becoming west 5 knots early in
the morning. Mostly clear. Waves 1 foot or less.

$$

LSZ146-302200-
Port Wing to Sand Island WI-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Areas of smoke.
Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke. Waves
1 foot or less.
.THURSDAY...Northeast wind 5 knots. Areas of smoke in the
morning. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 knots early in the evening becoming
variable 10 knots or less, then becoming southwest 5 knots early
in the morning. Mostly clear. Waves 1 foot or less.

$$

LSZ147-302200-
Sand Island to Bayfield WI-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Areas of smoke
through the day. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke. Waves
1 foot or less.
.THURSDAY...East wind 5 knots. Areas of smoke in the morning.
Waves 1 foot or less.
.THURSDAY NIGHT...Southeast wind 5 knots becoming south late in
the evening, then becoming variable 10 knots or less after
midnight becoming southwest 5 knots early in the morning. Mostly
clear. Waves 1 foot or less.

$$

LSZ150-302200-
Outer Apostle Islands Beyond 5 NM from Mainland-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Areas of smoke
through the day. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke. Waves
1 foot or less.
.THURSDAY...East wind 5 knots. Areas of smoke in the morning.
Waves 1 foot or less.
.THURSDAY NIGHT...Southeast wind 5 knots becoming southwest after
midnight. Mostly clear. Waves 1 foot or less.

$$

LSZ121-302200-
Chequamegon Bay-Bayfield to Oak Point WI-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Areas of smoke.
Waves 1 foot or less.
.TONIGHT...Northeast wind 5 to 10 knots. Areas of smoke. Waves
1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
5 knots in the late morning and afternoon. Areas of smoke in the
morning. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 knots becoming southeast late in
the evening, then becoming variable 10 knots or less after
midnight becoming southwest 5 knots early in the morning. Mostly
clear. Waves 1 foot or less.

$$

LSZ148-302200-
Oak Point to Saxon Harbor WI-
1000 AM CDT Wed Jul 30 2025

.REST OF TODAY...Northeast wind 5 to 10 knots. Areas of smoke.
Waves 1 to 2 feet.
.TONIGHT...Northeast wind 5 to 10 knots becoming east early in
the morning. Areas of smoke. Waves 1 foot or less.
.THURSDAY...Southeast wind 5 knots becoming northeast in the late
morning and afternoon. Areas of smoke in the morning. Waves
1 foot or less.
.THURSDAY NIGHT...East wind 5 knots becoming southwest after
midnight. Mostly clear. Waves 1 foot or less.

$$

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

BJH