841
FZUS53 KDLH 311448
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
948 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.

LSZ140-141-312230-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 5 knots. Scattered showers late
in the morning, then slight chance of thunderstorms and isolated
showers in the afternoon. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 knots becoming west early in the
morning. 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.

$$

LSZ142-143-312230-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Isolated showers
late in the morning, then scattered showers and slight chance of
thunderstorms in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 5 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.

$$

LSZ144-145-312230-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Isolated showers
through the day. Slight chance of thunderstorms late. Waves
1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of rain
showers in the evening, then slight chance of sprinkles after
midnight. Patchy fog 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. Slight chance of
sprinkles in the evening. Waves 1 foot or less.

$$

LSZ146-312230-
Port Wing to Sand Island WI-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 10 to 15 knots becoming west 5 to
10 knots in the afternoon. Scattered sprinkles through the day.
Slight chance of thunderstorms late. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Scattered 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 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ147-312230-
Sand Island to Bayfield WI-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 10 to 15 knots. Scattered
sprinkles through the day. 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.

$$

LSZ150-312230-
Outer Apostle Islands Beyond 5 NM from Mainland-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 10 to 15 knots. Scattered
sprinkles. 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.

$$

LSZ121-312230-
Chequamegon Bay-Bayfield to Oak Point WI-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Scattered
sprinkles in the late morning and early afternoon, then slight
chance of thunderstorms and isolated showers late. Waves 1 foot
or less.
.TONIGHT...South wind 5 knots becoming southwest after midnight.
Slight chance of sprinkles in the evening, then slight chance of
showers and thunderstorms after midnight. Patchy fog after
midnight. Waves 1 foot or less.
.MONDAY...Southwest wind 5 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.

$$

LSZ148-312230-
Oak Point to Saxon Harbor WI-
948 AM CDT Sun Aug 31 2025

.REST OF TODAY...Southwest wind 5 to 10 knots. Scattered
sprinkles in the late morning and early afternoon. Slight chance
of thunderstorms and isolated showers late. Waves 1 foot or less.
.TONIGHT...Southeast wind 5 knots becoming southwest early in the
morning. Slight chance of sprinkles through the night. Waves
1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots becoming southeast late in
the afternoon. Slight chance of sprinkles through the day. Waves
1 foot or less.
.MONDAY NIGHT...South wind 5 knots becoming southwest after
midnight. Slight chance of sprinkles in the evening. Waves 1 foot
or less.

$$

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

Wolfe