Nearshore Marine Forecast
Issued by NWS Duluth, MN

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942
FZUS53 KDLH 191943
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
243 PM CDT Sat Jul 19 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.

LSZ140-141-200415-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
243 PM CDT Sat Jul 19 2025

.TONIGHT...West wind 5 to 10 knots becoming northwest after
midnight. Areas of smoke after midnight. Waves 1 foot or less.
.SUNDAY...Northwest wind 5 knots becoming southwest in the late
morning and afternoon. Areas of smoke through the day. Chance of
sprinkles in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...Southwest wind 5 knots becoming north early in
the morning. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ142-143-200415-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
243 PM CDT Sat Jul 19 2025

.TONIGHT...Southwest wind 5 knots becoming northwest late in the
night. Areas of smoke late in the night. Waves 1 foot or less.
.SUNDAY...North wind 5 knots becoming southeast in the late
morning and afternoon. Areas of smoke through the day. Waves
1 foot or less.
.SUNDAY NIGHT...Southeast wind 5 knots becoming northeast in the
late evening and overnight. Areas of smoke in the evening. Waves
1 foot or less.
.MONDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves
1 foot or less.

$$

LSZ144-200415-
Two Harbors to Duluth MN-
243 PM CDT Sat Jul 19 2025

.TONIGHT...North wind 5 knots becoming northwest after midnight,
then becoming north late in the night. Patchy fog late in the
night. Waves 1 foot or less.
.SUNDAY...North wind 5 knots becoming east in the late morning
and afternoon. Areas of smoke in the afternoon. Waves 1 foot or
less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots. Areas of smoke
through the night. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Gusts up to 20 knots late in
the afternoon. Slight chance of showers and thunderstorms in the
afternoon. Waves 1 foot or less.

$$

LSZ145-200415-
Duluth MN to Port Wing WI-
243 PM CDT Sat Jul 19 2025

.TONIGHT...Northeast wind 5 knots becoming west after midnight.
Patchy fog late in the night. Waves 1 foot or less.
.SUNDAY...North wind 5 knots becoming northeast in the late
morning and afternoon. Areas of smoke in the afternoon. Waves
1 foot or less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots. Areas of smoke
through the night. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Slight chance of rain showers
in the afternoon. Waves 1 foot or less.

$$

LSZ146-200415-
Port Wing to Sand Island WI-
243 PM CDT Sat Jul 19 2025

.TONIGHT...North wind 5 knots becoming west in the late evening
and overnight. Patchy fog late in the night. Waves 1 foot or
less.
.SUNDAY...Northwest wind 5 knots becoming east late in the
afternoon. Areas of smoke in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...East wind 5 to 10 knots. Areas of smoke in the
evening. Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ147-200415-
Sand Island to Bayfield WI-
243 PM CDT Sat Jul 19 2025

.TONIGHT...South wind 5 knots becoming west in the late evening
and overnight. Patchy fog late in the night. Waves 1 foot or
less.
.SUNDAY...Northwest wind 5 knots becoming east late in the
afternoon. Areas of smoke in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...Southeast wind 5 knots becoming east in the late
evening and overnight. Areas of smoke in the evening. Waves
1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ150-200415-
Outer Apostle Islands Beyond 5 NM from Mainland-
243 PM CDT Sat Jul 19 2025

.TONIGHT...Southwest wind 5 knots becoming west after midnight.
Partly cloudy. Waves 1 foot or less.
.SUNDAY...North wind 5 knots becoming southeast late in the
afternoon. Areas of smoke in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...Southeast wind 5 knots becoming east in the late
evening and overnight. Areas of smoke in the evening. Waves
1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ121-200415-
Chequamegon Bay-Bayfield to Oak Point WI-
243 PM CDT Sat Jul 19 2025

.TONIGHT...East wind 5 knots early in the evening becoming
variable 10 knots or less, then becoming west 5 knots after
midnight. Patchy fog late in the night. Waves 1 foot or less.
.SUNDAY...West wind 5 knots becoming northeast in the late
morning and afternoon. Areas of smoke in the afternoon. Waves
1 foot or less.
.SUNDAY NIGHT...East wind 5 knots. Areas of smoke in the evening.
Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

LSZ148-200415-
Oak Point to Saxon Harbor WI-
243 PM CDT Sat Jul 19 2025

.TONIGHT...East wind 5 knots becoming southwest after midnight.
Patchy fog late in the night. Waves 1 foot or less.
.SUNDAY...West wind 5 knots becoming northeast in the afternoon.
Areas of smoke in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...East wind 5 knots. Areas of smoke in the evening.
Waves 1 foot or less.
.MONDAY...East wind 5 to 10 knots. Partly sunny. Waves 1 foot or
less.

$$

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

Britt