773 

FZUS53 KDLH 151739
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1239 PM CDT Wed Apr 15 2026

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.

LSZ140-152200-
Grand Portage to Grand Marais MN-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Northeast wind 5 knots. Patchy dense fog through
the day. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots becoming west after midnight.
Patchy fog in the evening, then areas of dense fog after
midnight. Waves 1 foot or less.
.THURSDAY...Southwest wind 5 knots becoming south late in the
afternoon. Areas of dense fog in the morning. Waves 1 foot or
less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots after midnight. Mostly cloudy. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ141-152200-
Grand Marais to Taconite Harbor MN-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Variable winds 10 knots or less. Patchy dense
fog through the day. Waves 1 foot or less.
.TONIGHT...Variable winds 10 knots or less. Patchy fog in the
evening, then areas of dense fog after midnight. Waves 1 foot or
less.
.THURSDAY...Variable winds 10 knots or less becoming south
5 knots in the late morning and early afternoon, then becoming
east late in the afternoon. Areas of dense fog in the morning.
Waves 1 foot or less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots after midnight. Patchy fog in the evening. Waves 1 to
2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ142-152200-
Taconite Harbor to Silver Bay Harbor MN-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Variable winds 10 knots or less. Patchy dense
fog late. Waves 1 foot or less.
.TONIGHT...Variable winds 10 knots or less. Patchy fog in the
evening, then areas of dense fog after midnight. Waves 1 foot or
less.
.THURSDAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Patchy dense fog in
the morning. Waves 1 foot or less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Patchy fog in
the evening. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ143-152200-
Silver Bay Harbor to Two Harbors MN-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Variable winds 10 knots or less becoming
northeast 5 knots late. Mostly cloudy early in the afternoon then
becoming mostly sunny. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog in the evening, then
widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
10 to 15 knots. Areas of dense fog in the morning. Waves 1 to
2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to
around 20 knots. Patchy fog in the evening. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ144-152200-
Two Harbors to Duluth MN-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...East wind 5 knots. Mostly cloudy early in the
afternoon then becoming mostly sunny. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog in the evening, then
widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
10 to 15 knots. Widespread dense fog in the morning. Waves 1 to
2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Patchy fog in the evening. Waves 1 to
2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ145-152200-
Duluth MN to Port Wing WI-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Northeast wind 5 knots. Mostly cloudy early in
the afternoon then becoming mostly sunny. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog in the evening, then
widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Northeast wind 10 to 15 knots. Widespread dense fog
in the morning. Waves 1 to 2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening. Patchy fog in the evening. Waves 1 to
2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ146-152200-
Port Wing to Sand Island WI-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Variable winds 10 knots or less becoming
northeast 5 knots late. Partly sunny. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog in the evening, then areas
of dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming northeast
10 to 15 knots. Areas of dense fog in the morning. Waves 1 to
2 feet.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Partly cloudy in
the evening then becoming mostly cloudy. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ147-152200-
Sand Island to Bayfield WI-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Variable winds 10 knots or less becoming
northeast 5 knots late. Partly sunny. Waves 1 foot or less.
.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog in the evening, then areas
of dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Areas of dense fog in
the morning. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 to 10 knots. Partly cloudy in the
evening then becoming mostly cloudy. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

LSZ150-152200-
Outer Apostle Islands Beyond 5 NM from Mainland-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Northeast wind 5 knots. Partly sunny. Waves
1 foot or less.
.TONIGHT...Northeast wind 5 knots. Patchy fog in the evening,
then widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...East wind 5 knots rising to 5 to 10 knots. Areas of
dense fog in the morning. Waves 1 foot or less.
.THURSDAY NIGHT...East wind 5 to 10 knots. Patchy fog in the
evening. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

$$

LSZ148-152200-
Oak Point to Saxon Harbor WI-
1239 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Northeast wind 5 knots. Partly sunny. Waves
1 foot or less.
.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog in the evening, then
widespread dense fog after midnight. Waves 1 foot or less.
.THURSDAY...Variable winds 10 knots or less becoming east 5 to
10 knots in the late morning and afternoon. Widespread dense fog
in the morning. Waves 1 foot or less.
.THURSDAY NIGHT...Northeast wind 5 knots becoming southeast with
gusts to around 20 knots after midnight, then becoming south
10 to 15 knots with gusts to around 25 knots early in the
morning. Partly cloudy. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

$$

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

WFO DLH