948
FZUS53 KDLH 222112
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
412 PM CDT Thu May 22 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.

LSZ140-141-230415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
412 PM CDT Thu May 22 2025

.TONIGHT...North wind 10 to 15 knots. Gusts up to 20 knots after
midnight. Slight chance of rain showers early in the evening,
then chance of sprinkles late in the evening. Waves 1 to 2 feet.
.FRIDAY...North wind 5 to 10 knots becoming southwest late in the
afternoon. Chance of sprinkles in the afternoon. Waves 1 foot or
less.
.FRIDAY NIGHT...Southwest wind 5 to 10 knots becoming north early
in the morning. Chance of sprinkles in the evening. Waves 1 foot
or less.
.SATURDAY...North wind 5 knots becoming northeast late in the
morning, then becoming south in the afternoon. Slight chance of
rain showers in the afternoon. Waves 1 foot or less.

$$

LSZ142-143-230415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
412 PM CDT Thu May 22 2025

.TONIGHT...Northeast wind 10 to 15 knots becoming north 5 knots
after midnight. Chance of sprinkles in the evening. Waves 1 to
2 feet.
.FRIDAY...North wind 5 knots becoming northeast late in the
morning, then becoming south in the afternoon. Chance of
sprinkles in the afternoon. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots becoming northeast late in the
evening, then becoming variable 10 knots or less after midnight.
Partly cloudy. Waves 1 foot or less.
.SATURDAY...Variable winds 10 knots or less becoming east 5 knots
late in the morning, then becoming southeast in the afternoon.
Slight chance of rain showers in the afternoon. Waves 1 foot or
less.

$$

LSZ144-145-230415-
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
412 PM CDT Thu May 22 2025

.TONIGHT...Northeast wind 10 to 15 knots becoming north 5 knots
late in the night. Partly cloudy. Waves 1 to 2 feet.
.FRIDAY...North wind 5 knots becoming east in the late morning
and afternoon. Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Northeast wind 5 knots until early morning
becoming variable 10 knots or less. Partly cloudy. Waves 1 foot
or less.
.SATURDAY...Variable winds 10 knots or less becoming northeast
5 knots in the late morning and afternoon. Slight chance of rain
showers in the afternoon. Waves 1 foot or less.

$$

LSZ146-230415-
Port Wing to Sand Island WI-
412 PM CDT Thu May 22 2025

.TONIGHT...Northeast wind 10 to 15 knots becoming north 5 knots
after midnight. Mostly cloudy then becoming partly cloudy in the
late evening and early morning then becoming mostly cloudy. Waves
1 to 2 feet.
.FRIDAY...North wind 5 knots becoming northeast in the afternoon.
Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots in the evening becoming
variable 10 knots or less. Mostly clear. Waves 1 foot or less.
.SATURDAY...Variable winds 10 knots or less becoming north
5 knots late in the morning, then becoming northeast in the
afternoon. Mostly sunny. Waves 1 foot or less.

$$

LSZ147-230415-
Sand Island to Bayfield WI-
412 PM CDT Thu May 22 2025

.TONIGHT...East wind 5 to 10 knots becoming north after midnight.
Mostly cloudy then becoming partly cloudy in the late evening and
early morning then becoming mostly cloudy. Waves 1 foot or less.
.FRIDAY...North wind 5 knots becoming east late in the afternoon.
Partly sunny in the morning then clearing. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots early in the evening becoming
variable 10 knots or less. Mostly clear. Waves 1 foot or less.
.SATURDAY...Variable winds 10 knots or less becoming north
5 knots late in the morning, then becoming east in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ150-230415-
Outer Apostle Islands Beyond 5 NM from Mainland-
412 PM CDT Thu May 22 2025

.TONIGHT...Northeast wind 10 to 15 knots becoming north 5 knots
after midnight. Chance of sprinkles in the evening. Waves 1 foot
or less.
.FRIDAY...North wind 5 knots becoming northwest early in the
afternoon, then becoming south late in the afternoon. Mostly
sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Southeast wind 5 knots in the evening becoming
variable 10 knots or less. Mostly clear. Waves 1 foot or less.
.SATURDAY...Variable winds 10 knots or less becoming north
5 knots late in the morning, then becoming east in the afternoon.
Sunny. Waves 1 foot or less.

$$

LSZ121-230415-
Chequamegon Bay-Bayfield to Oak Point WI-
412 PM CDT Thu May 22 2025

.TONIGHT...Northeast wind 5 to 10 knots becoming north after
midnight. Mostly cloudy then becoming partly cloudy in the late
evening and early morning then becoming mostly cloudy. Waves
1 foot or less.
.FRIDAY...North wind 5 knots becoming east in the afternoon.
Partly sunny in the morning then clearing. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots early in the evening becoming
variable 10 knots or less. Mostly clear. Waves 1 foot or less.
.SATURDAY...Variable winds 10 knots or less becoming northeast
5 knots in the late morning and early afternoon, then becoming
east late in the afternoon. Sunny. Waves 1 foot or less.

$$

LSZ148-230415-
Oak Point to Saxon Harbor WI-
412 PM CDT Thu May 22 2025

.TONIGHT...Northeast wind 10 to 15 knots becoming north 5 knots
after midnight. Mostly cloudy then becoming partly cloudy in the
late evening and early morning then becoming mostly cloudy. Waves
1 foot or less.
.FRIDAY...North wind 5 knots becoming east late in the afternoon.
Mostly sunny. Waves 1 foot or less.
.FRIDAY NIGHT...East wind 5 knots in the evening becoming
variable 10 knots or less. Mostly clear. Waves 1 foot or less.
.SATURDAY...Variable winds 10 knots or less becoming northeast
5 knots in the late morning and afternoon. Sunny. Waves 1 foot or
less.

$$

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

KML