808
FZUS53 KDLH 201833
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1232 PM CST Thu Nov 20 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.

LSZ140-202300-
Grand Portage to Grand Marais MN-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
2 to 4 feet.
.TONIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots early in the morning. Partly cloudy. Waves
1 to 2 feet.
.FRIDAY...Northwest wind 10 to 15 knots. Gusts up to 25 knots.
Sunny. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 5 to 10 knots becoming southwest
early in the morning. Partly cloudy. Waves 1 foot or less.

$$

LSZ141-202300-
Grand Marais to Taconite Harbor MN-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...Northwest wind 5 to 10 knots with gusts to
around 20 knots. Slight chance of rain early in the afternoon.
Waves 1 to 3 feet.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Partly cloudy. Waves 1 to 2 feet.
.FRIDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in
the morning. Sunny. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 5 knots in the evening becoming
variable 10 knots or less, then becoming southwest 5 knots early
in the morning. Mostly clear in the evening then becoming mostly
cloudy. Waves 1 foot or less.

$$

LSZ142-202300-
Taconite Harbor to Silver Bay Harbor MN-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 5 to 10 knots. Gusts up to 20 knots
late. Slight chance of rain early in the afternoon. Waves 1 to
2 feet.
.TONIGHT...West wind 5 to 10 knots with gusts to around 20 knots.
Mostly clear. Waves 1 foot or less.
.FRIDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in
the morning. Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Northwest wind 5 knots early in the evening
becoming variable 10 knots or less, then becoming southwest
5 knots early in the morning. Partly cloudy. Waves 1 foot or
less.

$$

LSZ143-202300-
Silver Bay Harbor to Two Harbors MN-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots. Slight chance of rain
early in the afternoon. Waves 1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots. Gusts up to 20 knots in the
late evening and overnight. Mostly clear. Waves 1 to 2 feet.
.FRIDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots
early in the morning. Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Northwest wind 5 knots early in the evening
becoming variable 10 knots or less, then becoming west 5 knots
after midnight becoming southwest. Mostly clear in the evening
then becoming mostly cloudy. Waves 1 foot or less.

$$

LSZ144-202300-
Two Harbors to Duluth MN-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots. Gusts up to 20 knots
late. Slight chance of rain early in the afternoon. Waves 1 to
2 feet.
.TONIGHT...West wind 10 to 15 knots. Gusts up to 20 knots in the
late evening and overnight. Partly cloudy. Waves 1 to 2 feet.
.FRIDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or
less.
.FRIDAY NIGHT...Northwest wind 5 knots becoming southwest after
midnight. Mostly clear in the evening then becoming mostly
cloudy. Waves 1 foot or less.

$$

LSZ145-202300-
Duluth MN to Port Wing WI-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy in the evening then clearing. Waves 1 to
3 feet.
.FRIDAY...Northwest wind 10 to 15 knots easing to 5 knots in the
afternoon. Sunny. Waves 1 to 2 feet.
.FRIDAY NIGHT...Northwest wind 5 knots becoming south after
midnight. Mostly clear in the evening then becoming mostly
cloudy. Waves 1 foot or less.

$$

LSZ146-202300-
Port Wing to Sand Island WI-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
1 to 3 feet.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy in the evening then clearing. Waves 1 to
2 feet building to 2 to 4 feet in the late evening and overnight.
.FRIDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots easing to 5 knots in the afternoon. Sunny. Waves 1 to
2 feet.
.FRIDAY NIGHT...Northwest wind 5 knots early in the evening
becoming variable 10 knots or less, then becoming southwest
5 knots after midnight. Mostly clear in the evening then becoming
mostly cloudy. Waves 1 foot or less.

$$

LSZ147-202300-
Sand Island to Bayfield WI-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
1 to 3 feet.
.TONIGHT...West wind 10 to 15 knots. Gusts up to 20 knots
increasing to 25 knots early in the morning. Mostly cloudy in the
evening then clearing. Waves 1 to 3 feet building to 2 to 4 feet
in the late evening and overnight.
.FRIDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots easing to 5 knots late in the afternoon. Sunny. Waves
1 to 3 feet.
.FRIDAY NIGHT...West wind 5 knots becoming southwest after
midnight. Partly cloudy. Waves 1 foot or less.

$$

LSZ150-202300-
Outer Apostle Islands Beyond 5 NM from Mainland-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
2 to 4 feet.
.TONIGHT...West wind 15 to 20 knots. Gusts up to 20 knots
increasing to 25 knots after midnight. Mostly cloudy in the
evening then becoming partly cloudy. Waves 3 to 5 feet. A small
craft advisory may be needed.
.FRIDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots in
the morning. Mostly sunny. Waves 2 to 4 feet subsiding to 1 to
3 feet in the late morning and afternoon.
.FRIDAY NIGHT...Northwest wind 5 knots becoming southwest after
midnight. Partly cloudy in the evening then becoming mostly
cloudy. Waves 1 foot or less.

$$

LSZ121-202300-
Chequamegon Bay-Bayfield to Oak Point WI-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 5 to 10 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
1 foot or less.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 foot or less.
.FRIDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or
less.
.FRIDAY NIGHT...West wind 5 knots becoming southwest after
midnight. Partly cloudy. Waves 1 foot or less.

$$

LSZ148-202300-
Oak Point to Saxon Harbor WI-
1233 PM CST Thu Nov 20 2025

.REST OF TODAY...West wind 10 to 15 knots with gusts to around
20 knots. Slight chance of rain early in the afternoon. Waves
1 to 2 feet.
.TONIGHT...West wind 10 to 15 knots with gusts to around
20 knots. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 to 2 feet.
.FRIDAY...Northwest wind 10 to 15 knots with gusts to around
20 knots easing to 5 knots late in the afternoon. Mostly sunny.
Waves 1 to 2 feet.
.FRIDAY NIGHT...West wind 5 knots becoming southwest early in the
morning. Partly cloudy. Waves 1 foot or less.

$$

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

WFO DLH