National Weather Service Marine Forecast FZUS53 KDLH

FZUS53 KDLH 120741
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
240 AM CDT Sun Jul 12 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.

LSZ140-121600
Grand Portage to Grand Marais MN
240 AM CDT Sun Jul 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Southwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and afternoon. Chance of thunderstorms early in the morning. Chance of rain showers in the morning. Waves 1 to 2 feet building to 2 to 4 feet in the late morning and afternoon.

TONIGHT
Southwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Partly cloudy. Waves 2 to 4 feet.

MONDAY
Southwest wind 20 to 25 knots with gusts to around 30 knots. Mostly sunny. Waves 1 to 3 feet building to 4 to 6 feet in the late morning and afternoon. Waves occasionally to 8 feet. A small craft advisory may be needed.

MONDAY NIGHT
Southwest wind 20 to 25 knots. Gusts up to 30 knots decreasing to 25 knots early in the morning. Partly cloudy. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed.

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LSZ141-121600
Grand Marais to Taconite Harbor MN
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 10 to 15 knots with gusts to around 20 knots. Chance of rain showers and slight chance of thunderstorms early in the morning, then slight chance of rain showers late in the morning. Waves 1 to 2 feet.

TONIGHT
Southwest wind 5 to 10 knots. Gusts up to 20 knots until early morning. Partly cloudy. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly sunny. Waves 1 to 3 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Partly cloudy. Waves 1 to 3 feet.

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LSZ142-121600
Taconite Harbor to Silver Bay Harbor MN
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 5 to 10 knots. Gusts up to 20 knots in the late morning and afternoon. Slight chance of showers and thunderstorms early in the morning. Waves 1 to 2 feet.

TONIGHT
Southwest wind 5 to 10 knots. Gusts up to 20 knots until early morning. Mostly clear. Waves 1 foot or less.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 5 to 10 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Partly cloudy. Waves 1 to 2 feet.

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LSZ143-121600
Silver Bay Harbor to Two Harbors MN
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 5 to 10 knots. Gusts up to 20 knots late in the morning increasing to 25 knots, then decreasing to 20 knots late in the afternoon. Sunny. Waves 1 to 2 feet.

TONIGHT
Southwest wind 5 to 10 knots. Gusts up to 20 knots in the evening. Mostly clear. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Partly cloudy. Waves 1 to 2 feet.

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LSZ144-121600
Two Harbors to Duluth MN
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 to 2 feet.

TONIGHT
Southwest wind 10 to 15 knots. Gusts up to 20 knots in the evening. Clear. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 25 knots. Sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots with gusts to around 20 knots. Partly cloudy. Waves 1 to 2 feet.

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LSZ145-121600
Duluth MN to Port Wing WI
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 to 2 feet.

TONIGHT
Southwest wind 10 to 15 knots. Gusts up to 20 knots until early morning. Mostly clear. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots with gusts to around 20 knots. Partly cloudy. Waves 1 to 2 feet.

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LSZ146-121600
Port Wing to Sand Island WI
240 AM CDT Sun Jul 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 2 feet.

TONIGHT
Southwest wind 10 to 15 knots with gusts to around 25 knots easing to 5 to 10 knots with gusts to around 20 knots in the late evening and overnight. Mostly clear. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots late in the evening, then increasing to 25 knots after midnight. Partly cloudy. Waves 1 to 2 feet.

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LSZ147-121600
Sand Island to Bayfield WI
240 AM CDT Sun Jul 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Southwest wind 10 to 15 knots. Gusts up to 25 knots. Sunny. Waves 1 to 2 feet.

TONIGHT
Southwest wind 5 to 10 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Mostly clear. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots late in the evening, then increasing to 25 knots after midnight. Partly cloudy. Waves 1 to 2 feet.

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LSZ150-121600
Outer Apostle Islands Beyond 5 NM from Mainland
240 AM CDT Sun Jul 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Southwest wind 10 to 15 knots. Gusts up to 25 knots. Slight chance of showers and thunderstorms early in the morning. Waves 1 to 2 feet.

TONIGHT
Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Mostly clear. Waves 1 to 2 feet.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Sunny. Waves 1 to 2 feet.

MONDAY NIGHT
Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots late in the evening, then increasing to 25 knots after midnight. Partly cloudy. Waves 1 to 2 feet.

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LSZ121-121600
Chequamegon Bay-Bayfield to Oak Point WI
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 foot or less.

TONIGHT
Southwest wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Mostly clear. Waves 1 foot or less.

MONDAY
Southwest wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Sunny. Waves 1 foot or less.

MONDAY NIGHT
Southwest wind 10 to 15 knots with gusts to around 20 knots. Partly cloudy. Waves 1 foot or less.

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LSZ148-121600
Oak Point to Saxon Harbor WI
240 AM CDT Sun Jul 12 2026

TODAY
Southwest wind 5 to 10 knots with gusts to around 20 knots becoming 10 knots with gusts to around 20 knots late in the afternoon. Sunny. Waves 1 foot or less.

TONIGHT
Southwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Mostly clear. Waves 1 foot or less.

MONDAY
Southwest wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Sunny. Waves 1 foot or less.

MONDAY NIGHT
Southwest wind 5 to 10 knots with gusts to around 20 knots. Partly cloudy. Waves 1 foot or less.

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

WFO DLH