247
FZUS53 KDLH 121847
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
147 PM CDT Sat Jul 12 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.

LSZ140-141-130415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
147 PM CDT Sat Jul 12 2025

.TONIGHT...West wind 5 to 10 knots. Slight chance of showers and
thunderstorms early in the evening. Areas of smoke through the
night. Waves 1 to 2 feet.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots.
Areas of smoke through the day. . Waves 1 to 3 feet building to
2 to 4 feet in the afternoon.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots becoming west 5 to 10 knots early in the morning.
Slight chance of showers and thunderstorms in the evening. Areas
of smoke through the night. Waves 2 to 4 feet subsiding to 1 to
3 feet after midnight.
.MONDAY...West wind 5 to 10 knots becoming southwest in the
afternoon. Areas of smoke in the morning. Waves 1 to 2 feet.

$$

LSZ142-143-130415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
147 PM CDT Sat Jul 12 2025

.TONIGHT...West wind 5 to 10 knots. Areas of smoke. Waves 1 foot
or less.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late morning and afternoon. Areas of smoke. Waves 1 to
2 feet.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots becoming west 5 knots early in the morning. Areas
of smoke after midnight. Waves 1 to 2 feet.
.MONDAY...West wind 5 knots becoming southwest in the afternoon.
Areas of smoke in the morning. Waves 1 foot or less.

$$

LSZ144-145-130415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
147 PM CDT Sat Jul 12 2025

.TONIGHT...West wind 5 to 10 knots. Gusts up to 20 knots early in
the evening. Areas of smoke. Waves 1 to 2 feet.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late morning and afternoon. Areas of smoke through the day.
Waves 1 to 2 feet.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening. Slight chance of showers in the
evening. Areas of smoke after midnight. Waves 1 to 2 feet.
.MONDAY...West wind 5 knots becoming southwest late in the
afternoon. Areas of smoke in the morning. Waves 1 foot or less.

$$

LSZ146-130415-
Port Wing to Sand Island WI-
147 PM CDT Sat Jul 12 2025

.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke. Waves
1 to 2 feet.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Areas of smoke through the day. Waves 1 to 2 feet.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening. Slight chance of thunderstorms in
the evening. Slight chance of showers through the night. Areas of
smoke after midnight. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 knots becoming south late in the
afternoon. Areas of smoke in the morning. Waves 1 foot or less.

$$

LSZ147-130415-
Sand Island to Bayfield WI-
147 PM CDT Sat Jul 12 2025

.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke. Waves
1 to 2 feet.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
late in the afternoon. Areas of smoke. Waves 1 to 2 feet.
.SUNDAY NIGHT...Southwest wind 5 to 10 knots. Gusts up to
20 knots early in the evening. Slight chance of thunderstorms in
the evening. Slight chance of showers through the night. Areas of
smoke after midnight. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming south late in the
afternoon. Areas of smoke in the morning. Waves 1 foot or less.

$$

LSZ150-130415-
Outer Apostle Islands Beyond 5 NM from Mainland-
147 PM CDT Sat Jul 12 2025

.TONIGHT...West wind 10 to 15 knots with gusts to around 20 knots
easing to 10 knots late in the evening, then becoming southwest
with gusts to around 20 knots after midnight. Areas of smoke.
Waves 1 to 2 feet.
.SUNDAY...Southwest wind 10 to 15 knots easing to 10 knots early
in the afternoon, then rising to 10 to 15 knots late in the
afternoon. Gusts up to 20 knots. Areas of smoke. Waves 1 to
2 feet.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the evening. Areas of smoke in the evening. Slight
chance of thunderstorms in the evening. Slight chance of showers
through the night. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming south late in the
afternoon. Areas of smoke in the morning. Waves 1 foot or less.

$$

LSZ121-130415-
Chequamegon Bay-Bayfield to Oak Point WI-
147 PM CDT Sat Jul 12 2025

.TONIGHT...West wind 5 to 10 knots. Areas of smoke. Waves 1 foot
or less.
.SUNDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late morning and afternoon. Areas of smoke. Waves 1 foot or
less.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to
20 knots early in the evening. Areas of smoke through the night.
Slight chance of showers and thunderstorms through the night.
Waves 1 foot or less.
.MONDAY...West wind 5 knots becoming southeast late in the
afternoon. Areas of smoke in the morning. Waves 1 foot or less.

$$

LSZ148-130415-
Oak Point to Saxon Harbor WI-
147 PM CDT Sat Jul 12 2025

.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke. Waves
1 foot or less.
.SUNDAY...Southwest wind 10 to 15 knots with gusts to around
20 knots. Areas of smoke. Waves 1 foot or less.
.SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots easing to 5 to 10 knots with gusts to around
20 knots in the late evening and overnight. Areas of smoke in the
evening. Slight chance of showers and thunderstorms through the
night. Waves 1 to 2 feet.
.MONDAY...West wind 5 to 10 knots becoming east late in the
afternoon. Areas of smoke in the morning. Waves 1 foot or less.

$$

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

JDS