Nearshore Marine Forecast
Issued by NWS Duluth, MN

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931
FZUS53 KDLH 050750
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
250 AM CDT Sat Jul 5 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.

LSZ140-141-051615-
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 5 to 10 knots becoming northwest with
gusts to around 20 knots in the afternoon. Rain showers and
chance of thunderstorms. Waves 1 to 2 feet.
.TONIGHT...Northwest wind 5 to 10 knots becoming north 10 to
15 knots after midnight. Gusts up to 20 knots. Chance of rain
showers and slight chance of thunderstorms in the evening. Waves
1 to 2 feet.
.SUNDAY...Northeast wind 10 to 15 knots with gusts to around
20 knots becoming southeast 5 to 10 knots late in the afternoon.
Mostly sunny. Waves 1 to 2 feet.
.SUNDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest
in the late evening and early morning, then becoming north early
in the morning. Partly cloudy. Waves 1 foot or less.

$$

LSZ142-143-051615-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 5 to 10 knots becoming northwest with
gusts to around 20 knots in the afternoon. Rain showers and
chance of thunderstorms. Waves 1 foot or less.
.TONIGHT...North wind 5 to 10 knots. Gusts up to 20 knots in the
evening. Chance of rain showers and slight chance of
thunderstorms in the evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots becoming east in the
afternoon. Mostly sunny. Waves 1 foot or less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots easing to 5 knots
after midnight. Mostly cloudy in the evening then becoming partly
cloudy. Waves 1 foot or less.

$$

LSZ144-051615-
Two Harbors to Duluth MN-
250 AM CDT Sat Jul 5 2025

.TODAY...Southeast wind 5 to 10 knots with gusts to around
20 knots becoming northwest with gusts to around 20 knots in the
afternoon. Rain showers in the morning. Chance of thunderstorms
through the day. Rain showers likely in the afternoon. Waves
1 foot or less.
.TONIGHT...North wind 10 to 15 knots. Gusts up to 20 knots early
in the evening. Slight chance of showers and thunderstorms in the
evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 foot or
less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ145-051615-
Duluth MN to Port Wing WI-
250 AM CDT Sat Jul 5 2025

.TODAY...South wind 5 to 10 knots becoming southwest late in the
morning, then becoming northwest with gusts to around 20 knots in
the afternoon. Rain showers in the morning. Chance of
thunderstorms through the day. Rain showers likely in the
afternoon. Waves 1 foot or less.
.TONIGHT...North wind 10 to 15 knots with gusts to around
20 knots becoming northwest 5 to 10 knots after midnight. Slight
chance of showers and thunderstorms in the evening. Waves 1 to
2 feet.
.SUNDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 foot or
less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ146-051615-
Port Wing to Sand Island WI-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 5 to 10 knots becoming northwest in the
afternoon. Rain showers and chance of thunderstorms. Waves 1 foot
or less.
.TONIGHT...Northwest wind 5 to 10 knots becoming west after
midnight, then becoming northwest early in the morning. Chance of
showers and thunderstorms in the evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Mostly sunny. Waves
1 foot or less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots. Partly cloudy.
Waves 1 foot or less.

$$

LSZ147-051615-
Sand Island to Bayfield WI-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 5 to 10 knots becoming northwest in the
afternoon. Rain showers and chance of thunderstorms. Waves 1 foot
or less.
.TONIGHT...Northwest wind 5 to 10 knots. Chance of showers and
thunderstorms in the evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots becoming east late in the
afternoon. Sunny. Waves 1 foot or less.
.SUNDAY NIGHT...Northeast wind 5 knots in the evening becoming
variable 10 knots or less. Partly cloudy. Waves 1 foot or less.

$$

LSZ150-051615-
Outer Apostle Islands Beyond 5 NM from Mainland-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 10 to 15 knots becoming northwest 5 to
10 knots in the afternoon. Rain showers and chance of
thunderstorms. Waves 1 to 2 feet.
.TONIGHT...North wind 10 to 15 knots. Chance of showers and
thunderstorms in the evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.
.SUNDAY NIGHT...Northeast wind 5 knots. Partly cloudy. Waves 1 to
2 feet.

$$

LSZ121-051615-
Chequamegon Bay-Bayfield to Oak Point WI-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 5 to 10 knots becoming north late in the
afternoon. Showers and chance of thunderstorms. Waves 1 foot or
less.
.TONIGHT...North wind 5 to 10 knots. Chance of showers and
thunderstorms in the evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 foot or
less.
.SUNDAY NIGHT...Northeast wind 5 to 10 knots until early morning
becoming variable 10 knots or less. Partly cloudy. Waves 1 foot
or less.

$$

LSZ148-051615-
Oak Point to Saxon Harbor WI-
250 AM CDT Sat Jul 5 2025

.TODAY...Southwest wind 5 to 10 knots becoming northwest in the
afternoon. Showers and chance of thunderstorms. Waves 1 foot or
less.
.TONIGHT...North wind 5 to 10 knots becoming northwest after
midnight, then becoming north early in the morning. Chance of
showers and thunderstorms in the evening. Waves 1 foot or less.
.SUNDAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.
.SUNDAY NIGHT...Northeast wind 5 knots until early morning
becoming variable 10 knots or less. Partly cloudy. Waves 1 to
2 feet.

$$

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

Rothstein