National Weather Service Marine Forecast FZUS53 KDLH

FZUS53 KDLH 021013
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
513 AM CDT Sun Aug 2 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.

LSZ140-021600
Grand Portage to Grand Marais MN
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 5 to 10 knots becoming east in the afternoon. Sunny. Waves 1 to 2 feet.

TONIGHT
East wind 5 knots becoming northeast in the late evening and overnight. Partly cloudy. Waves 1 foot or less.

MONDAY
East wind 5 knots becoming southeast in the late morning and afternoon. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
East wind 5 to 10 knots becoming southwest 10 to 15 knots with gusts to around 25 knots after midnight. Rain showers likely and slight chance of thunderstorms after midnight. Waves 1 to 3 feet.

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LSZ141-021600
Grand Marais to Taconite Harbor MN
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 5 knots becoming east in the late morning and afternoon. Sunny. Waves 1 foot or less.

TONIGHT
Northeast wind 5 knots. Partly cloudy. Waves 1 foot or less.

MONDAY
East wind 5 knots. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
East wind 5 knots becoming southwest after midnight. Rain showers likely and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ142-021600
Taconite Harbor to Silver Bay Harbor MN
513 AM CDT Sun Aug 2 2026

TODAY
Variable winds 10 knots or less becoming east 5 to 10 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less.

TONIGHT
Northeast wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less.

MONDAY
Variable winds 10 knots or less becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
Northeast wind 5 knots becoming southwest after midnight. Rain showers likely and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ143-021600
Silver Bay Harbor to Two Harbors MN
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny. Waves 1 to 3 feet.

TONIGHT
Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 1 to 3 feet.

MONDAY
Northeast wind 5 knots. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
Northeast wind 5 knots becoming southwest with gusts to around 20 knots after midnight. Rain showers likely and chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ144-021600
Two Harbors to Duluth MN
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny. Waves 1 to 2 feet building to 1 to 3 feet late in the afternoon.

TONIGHT
Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 1 to 3 feet.

MONDAY
East wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
East wind 5 to 10 knots becoming southwest 10 to 15 knots with gusts to around 20 knots early in the morning. Showers and chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ145-021600
Duluth MN to Port Wing WI
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny. Waves 1 to 2 feet building to 1 to 3 feet late in the afternoon.

TONIGHT
Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 1 to 3 feet.

MONDAY
East wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
East wind 5 to 10 knots becoming southwest 10 to 15 knots with gusts to around 20 knots early in the morning. Showers likely and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ146-021600
Port Wing to Sand Island WI
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 10 to 15 knots with gusts to around 20 knots. Patchy fog early in the morning. Waves 1 to 3 feet.

TONIGHT
Northeast wind 10 to 15 knots easing to 5 knots early in the morning. Partly cloudy. Waves 1 to 3 feet.

MONDAY
Variable winds 10 knots or less becoming northeast 5 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
East wind 5 knots becoming southwest with gusts to around 20 knots in the late evening and overnight. Showers likely and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ147-021600
Sand Island to Bayfield WI
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 5 to 10 knots. Patchy fog early in the morning. Waves 1 to 2 feet.

TONIGHT
East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less.

MONDAY
Southeast wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
Southeast wind 5 knots becoming south with gusts to around 20 knots in the late evening and overnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ150-021600
Outer Apostle Islands Beyond 5 NM from Mainland
513 AM CDT Sun Aug 2 2026

TODAY
Northeast wind 5 to 10 knots. Patchy fog early in the morning. Waves 1 to 2 feet.

TONIGHT
East wind 5 to 10 knots becoming southeast early in the morning. Partly cloudy. Waves 1 to 2 feet.

MONDAY
South wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
Southeast wind 5 to 10 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ121-021600
Chequamegon Bay-Bayfield to Oak Point WI
513 AM CDT Sun Aug 2 2026

DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING

TODAY
Northeast wind 5 to 10 knots. Patchy fog early in the morning. Waves 1 to 2 feet.

TONIGHT
Northeast wind 5 to 10 knots becoming east after midnight, then becoming variable 10 knots or less early in the morning. Partly cloudy. Waves 1 to 2 feet.

MONDAY
South wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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LSZ148-021600
Oak Point to Saxon Harbor WI
513 AM CDT Sun Aug 2 2026

DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING

TODAY
Northeast wind 5 to 10 knots. Patchy fog early in the morning. Waves 1 to 2 feet.

TONIGHT
Northeast wind 5 to 10 knots becoming south early in the morning. Partly cloudy. Waves 1 to 2 feet.

MONDAY
South wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less.

MONDAY NIGHT
South wind 5 to 10 knots. Gusts up to 20 knots in the late evening and overnight. Chance of showers and slight chance of thunderstorms after midnight. Waves 1 foot or less.

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

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