National Weather Service Marine Forecast FZUS53 KDLH

FZUS53 KDLH 300737
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
237 AM CDT Sat May 30 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.

LSZ140-301600
Grand Portage to Grand Marais MN
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 15 to 20 knots with gusts to around 25 knots. Sunny. Waves 3 to 5 feet.

TONIGHT
Northeast wind 15 to 20 knots with gusts to around 25 knots easing to 5 to 10 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight.

SUNDAY
Northeast wind 5 knots becoming south in the afternoon. Sunny. Waves 1 foot or less.

SUNDAY NIGHT
Southwest wind 5 knots becoming northeast after midnight. Partly cloudy. Waves 1 foot or less.

LSZ141-301600
Grand Marais to Taconite Harbor MN
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 15 to 20 knots with gusts to around 30 knots. Mostly sunny. Waves 3 to 5 feet.

TONIGHT
Northeast wind 15 to 20 knots with gusts to around 30 knots easing to 5 to 10 knots with gusts to around 20 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet early in the morning.

SUNDAY
Northeast wind 5 knots early in the morning becoming east, then becoming southeast early in the afternoon becoming variable 10 knots or less. Mostly sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Variable winds 10 knots or less becoming northeast 5 knots early in the morning. Partly cloudy. Waves 1 foot or less.

LSZ142-301600
Taconite Harbor to Silver Bay Harbor MN
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 10 to 15 knots with gusts to around 25 knots. Mostly sunny. Waves 3 to 5 feet.

TONIGHT
Northeast wind 10 to 15 knots with gusts to around 25 knots easing to 5 knots early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the morning.

SUNDAY
Variable winds 10 knots or less. Mostly sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Variable winds 10 knots or less. Partly cloudy. Waves 1 foot or less.

LSZ143-301600
Silver Bay Harbor to Two Harbors MN
237 AM CDT Sat May 30 2026

GALE WARNING IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 15 to 20 knots with gusts to around 30 knots. Partly sunny. Waves 3 to 5 feet.

SUNDAY
Northeast wind 5 knots. Sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
North wind 5 knots until early morning becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less.

LSZ144-301600
Two Harbors to Duluth MN
237 AM CDT Sat May 30 2026

GALE WARNING IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 20 to 25 knots with gusts to around 30 knots. Partly sunny. Waves 4 to 6 feet. Waves occasionally to 7 feet.

TONIGHT
Northeast wind 15 to 20 knots with gusts to around 30 knots easing to 5 to 10 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet early in the morning. Waves occasionally to 7 feet. A small craft advisory may be needed.

SUNDAY
East wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.

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

LSZ145-301600
Duluth MN to Port Wing WI
237 AM CDT Sat May 30 2026

GALE WARNING IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the afternoon. Partly sunny. Waves 4 to 6 feet. Waves occasionally to 7 feet.

TONIGHT
Northeast wind 15 to 20 knots with gusts to around 30 knots easing to 5 knots early in the morning. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 7 feet. A small craft advisory may be needed.

SUNDAY
Northeast wind 5 to 10 knots. Sunny. Waves 1 to 2 feet.

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

LSZ146-301600
Port Wing to Sand Island WI
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and afternoon. Partly sunny. Waves 3 to 5 feet.

TONIGHT
Northeast wind 10 to 15 knots with gusts to around 25 knots easing to 5 knots early in the morning. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet early in the morning.

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 foot or less.

LSZ147-301600
Sand Island to Bayfield WI
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Northeast wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Mostly sunny. Waves 3 to 5 feet.

TONIGHT
Northeast wind 10 to 15 knots with gusts to around 25 knots becoming variable 10 knots or less. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet early in the morning.

SUNDAY
Variable winds 10 knots or less becoming northeast 5 knots in the afternoon. Sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Variable winds 10 knots or less. Partly cloudy. Waves 1 foot or less.

LSZ150-301600
Outer Apostle Islands Beyond 5 NM from Mainland
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 30 knots. Mostly sunny. Waves 4 to 6 feet. Waves occasionally to 7 feet.

TONIGHT
Northeast wind 15 to 20 knots with gusts to around 25 knots becoming east 5 knots after midnight. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet early in the morning. Waves occasionally to 7 feet.

SUNDAY
Variable winds 10 knots or less becoming northeast 5 knots in the late morning and afternoon. Sunny. Waves 1 to 2 feet.

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

LSZ121-301600
Chequamegon Bay-Bayfield to Oak Point WI
237 AM CDT Sat May 30 2026

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

TONIGHT
North wind 5 to 10 knots with gusts to around 20 knots in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 to 2 feet.

SUNDAY
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.

SUNDAY NIGHT
Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less.

LSZ148-301600
Oak Point to Saxon Harbor WI
237 AM CDT Sat May 30 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING

TODAY
Northeast wind 10 to 15 knots. Gusts up to 35 knots. Mostly sunny. Waves 4 to 6 feet. Waves occasionally to 7 feet.

TONIGHT
Northeast wind 10 to 15 knots with gales to around 35 knots becoming northwest 5 to 10 knots late in the evening, then becoming southwest after midnight becoming north early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to 8 feet. A gale warning may be needed.

SUNDAY
Southeast wind 5 knots becoming northeast in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less.

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

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