235
FZUS53 KDLH 171939
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
239 PM CDT Tue Jun 17 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.

LSZ140-141-180415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
239 PM CDT Tue Jun 17 2025

.TONIGHT...West wind 10 to 15 knots with gusts to around 20 knots
easing to 5 knots late in the night. Areas of fog late in the
night. Waves 1 to 3 feet.
.WEDNESDAY...West wind 5 knots becoming southwest in the late
morning and afternoon. Areas of dense fog in the morning. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming north
early in the morning. Chance of rain showers after midnight.
Waves 1 foot or less.
.THURSDAY...Northeast wind 5 to 10 knots becoming east in the
afternoon. Chance of rain showers in the morning, then rain
showers likely and slight chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ142-143-180415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
239 PM CDT Tue Jun 17 2025

.TONIGHT...West wind 5 to 10 knots easing to 5 knots after
midnight. Areas of fog late in the night. Waves 1 foot or less.
.WEDNESDAY...Variable winds 10 knots or less becoming south
5 knots in the afternoon. Areas of fog in the morning. Waves
1 foot or less.
.WEDNESDAY NIGHT...Variable winds 10 knots or less becoming
northwest 5 knots in the late evening and overnight. Slight
chance of rain showers after midnight. Waves 1 foot or less.
.THURSDAY...North wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers in the morning,
then rain showers likely and chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ144-180415-
Two Harbors to Duluth MN-
239 PM CDT Tue Jun 17 2025

.TONIGHT...West wind 5 to 10 knots. Patchy fog late in the night.
Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots becoming south in the late morning
and early afternoon, then becoming southeast late in the
afternoon. Patchy fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Northeast wind 5 knots becoming west after
midnight. Slight chance of rain showers after midnight. Waves
1 foot or less.
.THURSDAY...Northwest wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers and slight chance
of thunderstorms in the morning, then rain showers likely and
chance of thunderstorms in the afternoon. Waves 1 foot or less.

$$

LSZ145-180415-
Duluth MN to Port Wing WI-
239 PM CDT Tue Jun 17 2025

.TONIGHT...West wind 5 to 10 knots. Patchy fog late in the night.
Waves 1 foot or less.
.WEDNESDAY...West wind 5 knots becoming east early in the
afternoon, then becoming southeast late in the afternoon. Patchy
fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Northeast wind 5 knots becoming west in the
late evening and overnight. Slight chance of rain showers after
midnight. Waves 1 foot or less.
.THURSDAY...West wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers in the morning,
then rain showers likely and chance of thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ146-180415-
Port Wing to Sand Island WI-
239 PM CDT Tue Jun 17 2025

.TONIGHT...Southwest wind 5 to 10 knots. Patchy fog late in the
night. Waves 1 foot or less.
.WEDNESDAY...Variable winds 10 knots or less becoming southwest
5 knots early in the afternoon, then becoming east late in the
afternoon. Patchy fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Variable winds 10 knots or less becoming south
5 knots late in the evening, then becoming west after midnight.
Slight chance of rain showers after midnight. Waves 1 foot or
less.
.THURSDAY...Southwest wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers in the morning,
then rain showers likely and slight chance of thunderstorms in
the afternoon. Waves 1 foot or less.

$$

LSZ147-180415-
Sand Island to Bayfield WI-
239 PM CDT Tue Jun 17 2025

.TONIGHT...West wind 5 knots. Patchy fog late in the night. Waves
1 foot or less.
.WEDNESDAY...Variable winds 10 knots or less becoming north
5 knots early in the afternoon, then becoming east late in the
afternoon. Patchy fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Variable winds 10 knots or less becoming
southwest 5 knots late in the evening, then becoming west after
midnight. Slight chance of rain showers after midnight. Waves
1 foot or less.
.THURSDAY...Northwest wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers in the morning,
then rain showers likely and slight chance of thunderstorms in
the afternoon. Waves 1 foot or less.

$$

LSZ150-180415-
Outer Apostle Islands Beyond 5 NM from Mainland-
239 PM CDT Tue Jun 17 2025

.TONIGHT...Southwest wind 5 to 10 knots becoming west late in the
night. Patchy fog late in the night. Waves 1 to 2 feet.
.WEDNESDAY...Variable winds 10 knots or less becoming west
5 knots late in the morning, then becoming northeast early in the
afternoon becoming southeast late in the afternoon. Patchy fog in
the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast wind 5 knots becoming southwest in
the late evening and early morning, then becoming west early in
the morning. Slight chance of rain showers after midnight. Waves
1 foot or less.
.THURSDAY...North wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers in the morning,
then rain showers likely and slight chance of thunderstorms in
the afternoon. Waves 1 foot or less.

$$

LSZ121-180415-
Chequamegon Bay-Bayfield to Oak Point WI-
239 PM CDT Tue Jun 17 2025

.TONIGHT...West wind 5 knots. Patchy fog late in the night. Waves
1 foot or less.
.WEDNESDAY...Variable winds 10 knots or less becoming east
5 knots in the late morning and afternoon. Patchy fog in the
morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...Northeast wind 5 knots becoming west in the
late evening and overnight. Mostly cloudy in the evening then
becoming partly cloudy. Waves 1 foot or less.
.THURSDAY...West wind 5 knots becoming northeast late in the
afternoon. Chance of rain showers in the morning, then rain
showers likely and chance of thunderstorms in the afternoon.
Waves 1 foot or less.

$$

LSZ148-180415-
Oak Point to Saxon Harbor WI-
239 PM CDT Tue Jun 17 2025

.TONIGHT...Southwest wind 5 knots. Patchy fog late in the night.
Waves 1 foot or less.
.WEDNESDAY...Variable winds 10 knots or less becoming north
5 knots late in the morning, then becoming east in the afternoon.
Patchy fog in the morning. Waves 1 foot or less.
.WEDNESDAY NIGHT...East wind 5 knots becoming southwest in the
late evening and overnight. Slight chance of rain showers after
midnight. Waves 1 foot or less.
.THURSDAY...West wind 5 knots becoming northeast in the late
morning and afternoon. Chance of rain showers in the morning,
then rain showers likely and slight chance of thunderstorms in
the afternoon. Waves 1 foot or less.

$$

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

PA