FZUS53 KDLH 152128
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
428 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.

LSZ140-160400-
Grand Portage to Grand Marais MN-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.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. Slight chance of rain after midnight.
Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in
the morning then 20 knots late in the afternoon. Rain likely and
slight chance of thunderstorms in the afternoon. Waves 1 to
3 feet.

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

$$

LSZ141-160400-
Grand Marais to Taconite Harbor MN-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.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 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. Slight chance
of rain after midnight. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots becoming north late in the afternoon. Rain likely and
chance of thunderstorms in the afternoon. Waves 1 to 2 feet.

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

$$

LSZ142-160400-
Taconite Harbor to Silver Bay Harbor MN-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Variable winds 10 knots or less. Patchy fog in the
evening. Areas of dense fog after midnight, then widespread dense
fog late in the night. 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.
.FRIDAY...Northeast wind 10 to 15 knots. Rain likely and chance
of thunderstorms in the afternoon. Waves 1 to 2 feet.

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

$$

LSZ143-160400-
Silver Bay Harbor to Two Harbors MN-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog in the evening. Areas of
dense fog after midnight, then widespread dense fog late in the
night. 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 foot
or less.
.THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to
20 knots in the evening then 20 knots early in the morning.
Patchy fog in the evening. Waves 1 to 2 feet.
.FRIDAY...Northeast wind 10 to 15 knots. Rain and chance of
thunderstorms in the afternoon. Waves 1 to 2 feet.

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

$$

LSZ144-160400-
Two Harbors to Duluth MN-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog late in the evening.
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.
.FRIDAY...Northeast wind 10 to 15 knots becoming north with gusts
to around 20 knots late in the afternoon. Slight chance of rain
in the morning, then rain and chance of thunderstorms in the
afternoon. Waves 1 to 2 feet.

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

$$

LSZ145-160400-
Duluth MN to Port Wing WI-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog late in the evening. Areas
of dense fog after midnight, then widespread dense fog late in
the night. 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.
.FRIDAY...Northeast wind 5 to 10 knots becoming north 10 to
15 knots with gusts to around 20 knots late in the afternoon.
Slight chance of rain in the morning, then rain and chance of
thunderstorms in the afternoon. Waves 1 to 3 feet.

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

$$

LSZ146-160400-
Port Wing to Sand Island WI-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots until early morning becoming
variable 10 knots or less. Patchy fog late in the evening. 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.
.FRIDAY...Northeast wind 5 to 10 knots becoming north late in the
afternoon. Rain and chance of thunderstorms in the afternoon.
Waves 1 to 3 feet.

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

$$

LSZ147-160400-
Sand Island to Bayfield WI-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog late in the evening. Areas
of dense fog after midnight, then widespread dense fog late in
the night. 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.
.FRIDAY...East wind 5 to 10 knots becoming northwest late in the
afternoon. Rain likely and chance of thunderstorms in the
afternoon. Waves 1 to 3 feet.

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

$$

LSZ150-160400-
Outer Apostle Islands Beyond 5 NM from Mainland-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots. Patchy fog in the evening.
Areas of dense fog after midnight, then widespread dense fog late
in the night. 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.
.FRIDAY...East wind 5 to 10 knots with gusts to around 20 knots
becoming north 10 to 15 knots with gusts to around 20 knots late
in the afternoon. Rain likely and slight chance of thunderstorms
in the afternoon. Waves 1 to 3 feet.

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

$$

LSZ148-160400-
Oak Point to Saxon Harbor WI-
428 PM CDT Wed Apr 15 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THURSDAY...

.TONIGHT...Northeast wind 5 knots early in the evening becoming
variable 10 knots or less. Patchy fog late in the evening.
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.
.FRIDAY...South wind 10 to 15 knots with gusts to around 25 knots
becoming southwest with gusts to around 20 knots late in the
afternoon. Rain likely and chance of thunderstorms in the
afternoon. Waves 1 to 2 feet.

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

$$

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

WFO DLH