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FZUS53 KDLH 111451
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
951 AM CDT Mon Aug 11 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.

LSZ140-141-112215-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 10 to 15 knots. Gusts up to
20 knots in the afternoon. Mostly sunny. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Slight chance of showers and thunderstorms
after midnight. Waves 1 to 3 feet.
.TUESDAY...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots in the late morning and afternoon. Slight
chance of showers and thunderstorms through the day. Waves 2 to
4 feet. A small craft advisory may be needed.
.TUESDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
in the evening. Mostly clear. Waves 1 to 3 feet subsiding to 1 to
2 feet in the late evening and overnight.

$$

LSZ142-143-112215-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Mostly sunny.
Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Areas of smoke after midnight. Chance of
showers and slight chance of thunderstorms after midnight. Waves
1 to 2 feet.
.TUESDAY...Southwest wind 10 to 15 knots becoming west 5 to
10 knots in the late morning and afternoon. Gusts up to 20 knots.
Slight chance of showers and thunderstorms. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Gusts up to 20 knots
early in the evening. Mostly clear. Waves 1 foot or less.

$$

LSZ144-145-112215-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Mostly sunny.
Waves 1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Areas of smoke through the night. Chance of
showers and thunderstorms after midnight. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of showers and thunderstorms in the
morning. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Gusts up to 20 knots
early in the evening. Mostly clear. Waves 1 to 2 feet.

$$

LSZ146-112215-
Port Wing to Sand Island WI-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Mostly sunny.
Waves 1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Areas of smoke through the night. Chance of
thunderstorms and slight chance of showers after midnight. Waves
1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of showers and thunderstorms. Waves 1 to
2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 to 2 feet.

$$

LSZ147-112215-
Sand Island to Bayfield WI-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Mostly sunny.
Waves 1 foot or less.
.TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots after
midnight. Areas of smoke through the night. Slight chance of
showers and thunderstorms after midnight. Waves 1 to 2 feet.
.TUESDAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of showers and thunderstorms through the
day. Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 to 2 feet.

$$

LSZ150-112215-
Outer Apostle Islands Beyond 5 NM from Mainland-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 to 10 knots becoming south
late. Mostly sunny. Waves 1 foot or less.
.TONIGHT...South wind 10 to 15 knots with gusts to around
20 knots becoming southwest with gusts to around 25 knots early
in the morning. Areas of smoke through the night. Slight chance
of showers and thunderstorms after midnight. Waves 1 to 2 feet.
.TUESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots late in the morning, then decreasing to
20 knots in the afternoon. Slight chance of showers and
thunderstorms. Waves 1 to 3 feet.
.TUESDAY NIGHT...West 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. Mostly clear. Waves 1 to 2 feet.

$$

LSZ121-112215-
Chequamegon Bay-Bayfield to Oak Point WI-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 knots. Mostly sunny. Waves
1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Areas of smoke through
the night. Slight chance of showers and thunderstorms after
midnight. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Gusts up to 20 knots. Slight chance of showers and
thunderstorms. Waves 1 foot or less.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

LSZ148-112215-
Oak Point to Saxon Harbor WI-
951 AM CDT Mon Aug 11 2025

.REST OF TODAY...Southwest wind 5 knots becoming south late.
Mostly sunny. Waves 1 foot or less.
.TONIGHT...South wind 10 to 15 knots with gusts to around
20 knots. Areas of smoke through the night. Slight chance of
showers and thunderstorms after midnight. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots becoming west early in
the afternoon, then easing to 10 knots late in the afternoon.
Gusts up to 20 knots. Slight chance of showers and thunderstorms.
Waves 1 to 2 feet.
.TUESDAY NIGHT...West wind 5 to 10 knots. Mostly clear. Waves
1 foot or less.

$$

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

BJH