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FZUS53 KDLH 312043
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
343 PM 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.

LSZ140-141-010415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
343 PM CDT Sun Aug 31 2025

.TONIGHT...Southwest wind 5 knots becoming west late in the
night. Patchy fog through the night. Slight chance of
thunderstorms until early morning. Chance of rain showers through
the night. Chance of thunderstorms late in the night. Waves
1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Patchy fog in the
morning. Chance of showers and thunderstorms through the day.
Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy in
the evening then becoming partly cloudy. Waves 1 foot or less.
.TUESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late morning and afternoon. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 3 feet.

$$

LSZ142-143-010415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
343 PM CDT Sun Aug 31 2025

.TONIGHT...Southwest wind 5 to 10 knots. Chance of thunderstorms
in the evening. Chance of showers through the night. Slight
chance of thunderstorms after midnight. Patchy fog after
midnight. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Patchy fog in the
morning. Slight chance of showers and thunderstorms through the
day. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Mostly cloudy in the
evening then clearing. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ144-145-010415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
343 PM CDT Sun Aug 31 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of
thunderstorms in the evening. Slight chance of rain showers
through the night. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Patchy fog in the
morning. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves
1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ146-010415-
Port Wing to Sand Island WI-
343 PM CDT Sun Aug 31 2025

.TONIGHT...Southwest wind 5 to 10 knots. Slight chance of showers
and thunderstorms early in the evening. Slight chance of showers
late in the night. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
1 foot or less.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.
.TUESDAY...Southwest wind 5 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ147-010415-
Sand Island to Bayfield WI-
343 PM CDT Sun Aug 31 2025

.TONIGHT...Southwest wind 5 to 10 knots. Partly cloudy. Waves
1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves
1 foot or less.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.
.TUESDAY...Southwest wind 5 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ150-010415-
Outer Apostle Islands Beyond 5 NM from Mainland-
343 PM CDT Sun Aug 31 2025

.TONIGHT...South wind 5 to 10 knots becoming southwest late in
the night. Slight chance of showers late in the night. Waves
1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves 1 to
2 feet.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ121-010415-
Chequamegon Bay-Bayfield to Oak Point WI-
343 PM CDT Sun Aug 31 2025

.TONIGHT...South wind 5 knots becoming southwest in the late
evening and overnight. Partly cloudy. Waves 1 foot or less.
.MONDAY...Southwest wind 5 knots becoming south late in the
afternoon. Mostly sunny. Waves 1 foot or less.
.MONDAY NIGHT...Southwest wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ148-010415-
Oak Point to Saxon Harbor WI-
343 PM CDT Sun Aug 31 2025

.TONIGHT...Southeast wind 5 knots becoming southwest in the late
evening and overnight. Partly cloudy. Waves 1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots becoming east late in the
afternoon. Sunny. Waves 1 foot or less.
.MONDAY NIGHT...Southeast wind 5 knots becoming southwest in the
late evening and overnight. Partly cloudy. Waves 1 foot or less.
.TUESDAY...Southwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the afternoon. Waves 1 foot or less.

$$

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

Wolfe