129
FZUS53 KDLH 120259
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
959 PM CDT Sun May 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.

LSZ140-121015-
Grand Portage to Grand Marais MN-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots. Mostly clear. Waves 2 to 4 feet.
.MONDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the morning. Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet
late in the afternoon. A small craft advisory may be needed.
.MONDAY NIGHT...South wind 5 to 10 knots becoming southwest after
midnight. Mostly clear. Waves 1 to 2 feet.
.TUESDAY...South wind 5 to 10 knots becoming southeast late in
the afternoon. Sunny. Waves 1 to 2 feet.

$$

LSZ141-121015-
Grand Marais to Taconite Harbor MN-
959 PM CDT Sun May 11 2025

.REST OF TONIGHT...Southwest wind 5 to 10 knots. Clear. Waves
1 to 2 feet building to 1 to 3 feet after midnight.
.MONDAY...South wind 5 to 10 knots becoming southeast in the
afternoon. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...East wind 5 knots becoming southeast after
midnight. Clear. Waves 1 to 2 feet.
.TUESDAY...Southeast wind 5 knots becoming east. Sunny. Waves
1 foot or less.

$$

LSZ142-121015-
Taconite Harbor to Silver Bay Harbor MN-
959 PM CDT Sun May 11 2025

.REST OF TONIGHT...Southwest wind 5 to 10 knots with gusts to
around 20 knots. Clear. Waves 1 to 3 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming southeast late in
the afternoon. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Southeast wind 5 to 10 knots. Clear. Waves 1 foot
or less.
.TUESDAY...East wind 5 knots. Sunny. Waves 1 foot or less.

$$

LSZ144-145-121015-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
25 knots decreasing to 20 knots toward daybreak. Clear. Waves
1 to 3 feet.
.MONDAY...South wind 10 to 15 knots with gusts to around
20 knots. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...South wind 10 to 15 knots. Gusts up to 20 knots
early in the evening. Clear. Waves 1 to 2 feet.
.TUESDAY...Southeast wind 10 to 15 knots. Gusts up to 20 knots in
the afternoon. Sunny. Waves 1 to 2 feet.

$$

LSZ143-121015-
Silver Bay Harbor to Two Harbors MN-
959 PM CDT Sun May 11 2025

.REST OF TONIGHT...Southwest wind 10 to 15 knots with gusts to
around 20 knots. Clear. Waves 1 to 3 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming southeast late in
the afternoon. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Southeast wind 5 to 10 knots. Clear. Waves 1 to
2 feet.
.TUESDAY...East wind 5 to 10 knots. Sunny. Waves 1 foot or less.

$$

LSZ146-121015-
Port Wing to Sand Island WI-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots toward daybreak. Clear. Waves
1 to 3 feet.
.MONDAY...Southwest wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...South wind 5 to 10 knots. Clear. Waves 1 foot or
less.
.TUESDAY...South wind 5 to 10 knots becoming east in the
afternoon. Sunny. Waves 1 foot or less.

$$

LSZ147-121015-
Sand Island to Bayfield WI-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots toward daybreak. Clear. Waves
1 to 2 feet.
.MONDAY...South wind 5 to 10 knots. Gusts up to 20 knots early in
the morning. Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...South wind 5 to 10 knots. Clear. Waves 1 foot or
less.
.TUESDAY...South wind 5 knots becoming east in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ121-121015-
Chequamegon Bay-Bayfield to Oak Point WI-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots after midnight. Clear. Waves 1 to
2 feet.
.MONDAY...Southwest wind 10 to 15 knots becoming south 5 to
10 knots in the late morning and afternoon. Gusts up to 20 knots.
Sunny. Waves 1 foot or less.
.MONDAY NIGHT...South wind 5 to 10 knots. Gusts up to 20 knots
early in the evening. Clear. Waves 1 foot or less.
.TUESDAY...South wind 5 to 10 knots becoming southeast late in
the afternoon. Sunny. Waves 1 foot or less.

$$

LSZ148-121015-
Oak Point to Saxon Harbor WI-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 10 to 15 knots. Gusts up to
25 knots decreasing to 20 knots toward daybreak. Clear. Waves
1 to 2 feet.
.MONDAY...South wind 10 to 15 knots with gusts to around 20 knots
easing to 10 knots with gusts to around 20 knots early in the
afternoon, then rising to 10 to 15 knots late in the afternoon.
Sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...South wind 10 to 15 knots easing to 5 to 10 knots
in the late evening and overnight. Clear. Waves 1 foot or less.
.TUESDAY...South wind 5 to 10 knots becoming southeast late in
the afternoon. Sunny. Waves 1 foot or less.

$$

LSZ150-121015-
Outer Apostle Islands Beyond 5 NM from Mainland-
959 PM CDT Sun May 11 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 AM CDT MONDAY...

.REST OF TONIGHT...Southwest wind 15 to 20 knots. Gusts up to
30 knots decreasing to 25 knots after midnight. Clear. Waves 2 to
4 feet.
.MONDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the
morning. Sunny. Waves 1 to 3 feet subsiding to 1 to 2 feet in the
late morning and afternoon.
.MONDAY NIGHT...South wind 10 to 15 knots. Clear. Waves 1 to
2 feet.
.TUESDAY...South wind 5 to 10 knots becoming east in the
afternoon. Sunny. Waves 1 to 2 feet.

$$

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

JDS