544
FZUS53 KDLH 231117
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
517 AM CST Sun Nov 23 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.

LSZ140-231700-
Grand Portage to Grand Marais MN-
517 AM CST Sun Nov 23 2025

.TODAY...West wind 10 to 15 knots with gusts to around 30 knots
becoming southwest in the afternoon. Sunny early in the morning
then becoming partly sunny. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
early in the morning. Mostly cloudy. Waves 1 to 2 feet building
to 1 to 3 feet early in the morning.
.MONDAY...West wind 5 to 10 knots becoming northwest late in the
afternoon. Mostly sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northeast wind 10 to 15 knots. Slight chance of
rain after midnight. Waves 1 foot or less.

$$

LSZ141-231700-
Grand Marais to Taconite Harbor MN-
517 AM CST Sun Nov 23 2025

.TODAY...West wind 5 to 10 knots with gusts to around 25 knots
becoming southwest 10 to 15 knots in the afternoon. Sunny early
in the morning then becoming mostly cloudy. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 to 2 feet.
.MONDAY...West wind 5 knots becoming northwest late in the
afternoon. Mostly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of
rain after midnight. Waves 1 foot or less.

$$

LSZ142-231700-
Taconite Harbor to Silver Bay Harbor MN-
517 AM CST Sun Nov 23 2025

.TODAY...West wind 5 to 10 knots with gusts to around 20 knots
becoming southwest in the afternoon. Mostly sunny early in the
morning then becoming mostly cloudy. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 to 2 feet.
.MONDAY...West wind 5 knots becoming northwest late in the
afternoon. Mostly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...North wind 5 knots becoming northeast after
midnight. Slight chance of rain after midnight. Waves 1 foot or
less.

$$

LSZ143-231700-
Silver Bay Harbor to Two Harbors MN-
517 AM CST Sun Nov 23 2025

.TODAY...Southwest wind 5 to 10 knots. Gusts up to 20 knots early
in the morning. Mostly sunny early in the morning then becoming
mostly cloudy. Waves 1 foot or less.
.TONIGHT...Southwest wind 10 to 15 knots. Mostly cloudy. Waves
1 to 2 feet.
.MONDAY...West wind 5 to 10 knots. Partly sunny. Waves 1 to
2 feet.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of
rain in the evening, then chance of rain after midnight. Waves
1 foot or less.

$$

LSZ144-231700-
Two Harbors to Duluth MN-
517 AM CST Sun Nov 23 2025

.TODAY...Southwest wind 5 to 10 knots. Partly sunny. Waves 1 foot
or less.
.TONIGHT...Southwest wind 10 to 15 knots. Mostly cloudy. Waves
1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of
rain in the evening, then chance of rain after midnight. Waves
1 foot or less.

$$

LSZ145-231700-
Duluth MN to Port Wing WI-
517 AM CST Sun Nov 23 2025

.TODAY...Southwest wind 5 to 10 knots becoming south late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Mostly cloudy. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Slight chance of
rain in the evening, then chance of rain after midnight. Waves
1 foot or less.

$$

LSZ146-231700-
Port Wing to Sand Island WI-
517 AM CST Sun Nov 23 2025

.TODAY...Southwest wind 10 to 15 knots with gusts to around
20 knots easing to 5 to 10 knots late in the afternoon. Mostly
sunny early in the morning then becoming mostly cloudy. Waves
1 to 3 feet.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots in
the late evening and overnight. Mostly cloudy. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 5 knots rising to 5 to 10 knots
after midnight. Slight chance of rain in the evening, then chance
of rain after midnight. Waves 1 foot or less.

$$

LSZ147-231700-
Sand Island to Bayfield WI-
517 AM CST Sun Nov 23 2025

.TODAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming southwest 5 to 10 knots late in the afternoon. Mostly
sunny early in the morning then becoming mostly cloudy. Waves
1 to 3 feet subsiding to 1 to 2 feet in the late morning and
afternoon.
.TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots
after midnight. Mostly cloudy. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...North wind 5 knots becoming northeast in the late
evening and overnight. Slight chance of rain in the evening, then
chance of rain after midnight. Waves 1 foot or less.

$$

LSZ150-231700-
Outer Apostle Islands Beyond 5 NM from Mainland-
517 AM CST Sun Nov 23 2025

.TODAY...West wind 10 to 15 knots with gusts to around 20 knots
becoming southwest 5 to 10 knots late in the afternoon. Mostly
sunny early in the morning then becoming mostly cloudy. Waves
2 to 4 feet subsiding to 1 to 2 feet in the afternoon.
.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy. Waves 1 to 3 feet.
.MONDAY...Southwest wind 10 to 15 knots becoming west 5 knots
late in the afternoon. Partly sunny. Waves 1 to 3 feet.
.MONDAY NIGHT...Northeast wind 5 knots rising to 5 to 10 knots
after midnight. Slight chance of rain in the evening, then chance
of rain after midnight. Waves 1 foot or less.

$$

LSZ121-231700-
Chequamegon Bay-Bayfield to Oak Point WI-
517 AM CST Sun Nov 23 2025

.TODAY...Southwest wind 5 to 10 knots. Mostly sunny early in the
morning then becoming mostly cloudy. Waves 1 foot or less.
.TONIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves
1 foot or less.
.MONDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Partly sunny. Waves 1 foot or less.
.MONDAY NIGHT...North wind 5 knots becoming northeast in the late
evening and overnight. Chance of rain. Waves 1 foot or less.

$$

LSZ148-231700-
Oak Point to Saxon Harbor WI-
517 AM CST Sun Nov 23 2025

.TODAY...Southwest wind 10 to 15 knots with gusts to around
20 knots easing to 5 to 10 knots late in the afternoon. Mostly
sunny early in the morning then becoming mostly cloudy. Waves
1 to 2 feet.
.TONIGHT...Southwest wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy. Waves 1 to 2 feet.
.MONDAY...Southwest wind 5 to 10 knots becoming west late in the
afternoon. Partly sunny. Waves 1 to 2 feet.
.MONDAY NIGHT...Northeast wind 5 to 10 knots. Chance of rain.
Waves 1 foot or less.

$$

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

WFO DLH