173
FZUS53 KDLH 310856
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
356 AM CDT Sun Aug 31 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.

LSZ140-141-311615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Patchy dense fog early in
the morning. Slight chance of rain showers early in the morning,
then slight chance of sprinkles late in the morning. Slight
chance of showers and thunderstorms in the afternoon. Waves
1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of showers
and thunderstorms through the night. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of showers
and thunderstorms. Waves 1 to 2 feet.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Slight chance of
showers and thunderstorms in the evening. Waves 1 foot or less.

$$

LSZ142-143-311615-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of rain
showers through the day. Slight chance of thunderstorms in the
afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 to 10 knots. Slight chance of showers and
thunderstorms. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of showers
and thunderstorms. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Slight chance of showers
and thunderstorms in the evening. Waves 1 foot or less.

$$

LSZ144-145-311615-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of rain
showers through the day. Slight chance of thunderstorms late in
the afternoon. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Slight chance of
sprinkles in the evening. Waves 1 foot or less.

$$

LSZ146-311615-
Port Wing to Sand Island WI-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of showers
early in the morning, then slight chance of sprinkles in the late
morning and afternoon. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves
1 foot or less.

$$

LSZ147-311615-
Sand Island to Bayfield WI-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of sprinkles
in the late morning and afternoon. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the evening, then slight chance of showers and
thunderstorms after midnight. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves
1 foot or less.

$$

LSZ150-311615-
Outer Apostle Islands Beyond 5 NM from Mainland-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Patchy fog early in the
morning. Slight chance of sprinkles in the afternoon. Waves 1 to
2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the evening. Slight chance of showers and
thunderstorms after midnight. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ121-311615-
Chequamegon Bay-Bayfield to Oak Point WI-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots. Slight chance of showers
and thunderstorms in the afternoon. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
sprinkles in the evening, then slight chance of showers and
thunderstorms after midnight. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Slight chance of
sprinkles through the day. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Slight chance of
sprinkles in the evening. Waves 1 foot or less.

$$

LSZ148-311615-
Oak Point to Saxon Harbor WI-
356 AM CDT Sun Aug 31 2025

.TODAY...Southwest wind 5 to 10 knots becoming south late in the
afternoon. Patchy fog early in the morning. Slight chance of rain
showers in the afternoon. Slight chance of thunderstorms late in
the afternoon. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Slight chance of sprinkles through the
night. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots becoming east late in the
afternoon. Slight chance of sprinkles through the day. Waves
1 foot or less.
.MONDAY NIGHT...South wind 5 knots becoming southwest early in
the morning. Slight chance of sprinkles in the evening. Waves
1 foot or less.

$$

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

Huyck