National Weather Service Marine Forecast FZUS53 KDLH

FZUS53 KDLH 151558
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
1058 AM CDT Tue Sep 15 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.

LSZ140-152200
Grand Portage to Grand Marais MN
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots early in the afternoon, then decreasing to 35 knots late. Chance of sprinkles late in the morning. Waves 6 to 9 feet. Waves occasionally to 12 feet.

TONIGHT
West wind 15 to 20 knots with gusts to around 30 knots becoming northwest 5 to 10 knots with gusts to around 20 knots early in the morning. Mostly clear. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. A small craft advisory may be needed.

WEDNESDAY
Northwest wind 5 to 10 knots becoming northeast late in the morning, then becoming southeast in the afternoon. Mostly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
Southeast wind 5 to 10 knots becoming west early in the morning. Mostly cloudy. Waves 1 foot or less.

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LSZ141-152200
Grand Marais to Taconite Harbor MN
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind 20 to 25 knots. Gusts up to 30 knots increasing to 35 knots in the afternoon. Chance of sprinkles late in the morning. Waves 4 to 7 feet. Waves occasionally to 9 feet.

TONIGHT
West wind 10 to 15 knots with gusts to around 25 knots becoming northwest 5 knots early in the morning. Mostly clear. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight.

WEDNESDAY
Northwest wind 5 knots becoming southeast in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
Northeast wind 5 knots becoming northwest early in the morning. Mostly cloudy. Waves 1 foot or less.

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LSZ142-152200
Taconite Harbor to Silver Bay Harbor MN
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind 20 to 25 knots easing to 10 to 15 knots late. Gusts up to 30 knots increasing to 35 knots early in the afternoon, then decreasing to 30 knots late. Mostly sunny. Waves 3 to 5 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 to 2 feet.

WEDNESDAY
North wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southeast 5 knots in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less.

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LSZ143-152200
Silver Bay Harbor to Two Harbors MN
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind 20 to 25 knots with gales to around 35 knots easing to 10 to 15 knots with gusts to around 30 knots late. Mostly sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet late. Waves occasionally to 7 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 foot or less.

WEDNESDAY
North wind 5 knots becoming east in the late morning and afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
Northeast wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less.

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LSZ144-152200
Two Harbors to Duluth MN
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind 20 to 25 knots with gales to around 35 knots easing to 10 to 15 knots with gusts to around 25 knots late. Mostly sunny. Waves 3 to 5 feet subsiding to 1 to 3 feet late. Waves occasionally to 7 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest after midnight. Mostly clear. Waves 1 to 2 feet.

WEDNESDAY
North wind 5 knots becoming east in the late morning and afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less.

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LSZ145-152200
Duluth MN to Port Wing WI
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind up to 30 knots with gales to around 35 knots easing to 15 to 20 knots with gusts to around 30 knots late. Mostly sunny. Waves 4 to 6 feet subsiding to 2 to 4 feet late. Waves occasionally to 8 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 to 2 feet.

WEDNESDAY
North wind 5 knots becoming northeast in the late morning and afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
East wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less.

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LSZ146-152200
Port Wing to Sand Island WI
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind up to 30 knots easing to 15 to 20 knots late. Gales up to 40 knots decreasing to 30 knots late. Sunny. Waves 5 to 8 feet subsiding to 3 to 5 feet late. Waves occasionally to 10 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 to 3 feet.

WEDNESDAY
North wind 5 knots becoming northeast in the late morning and afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less.

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LSZ147-152200
Sand Island to Bayfield WI
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind up to 30 knots with gales to around 40 knots easing to 15 to 20 knots with gusts to around 30 knots late. Chance of sprinkles late in the morning. Waves 5 to 8 feet subsiding to 3 to 5 feet late. Waves occasionally to 10 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 to 3 feet.

WEDNESDAY
North wind 5 knots becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less.

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LSZ150-152200
Outer Apostle Islands Beyond 5 NM from Mainland
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind up to 30 knots. Gales up to 40 knots decreasing to 35 knots late. Chance of sprinkles late in the morning. Waves 5 to 8 feet. Waves occasionally to 11 feet.

TONIGHT
West wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 to 10 knots early in the morning. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight.

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

WEDNESDAY NIGHT
East wind 5 to 10 knots becoming southeast early in the morning. Mostly cloudy. Waves 1 foot or less.

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LSZ121-152200
Chequamegon Bay-Bayfield to Oak Point WI
1058 AM CDT Tue Sep 15 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind 10 to 15 knots with gales to around 35 knots rising to 20 to 25 knots with gales to around 35 knots in the afternoon. Chance of sprinkles late in the morning. Waves 1 to 2 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 foot or less.

WEDNESDAY
Northwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 to 10 knots in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
East wind 5 to 10 knots becoming south after midnight, then becoming variable 10 knots or less early in the morning. Slight chance of rain showers. Waves 1 foot or less.

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LSZ148-152200
Oak Point to Saxon Harbor WI
1058 AM CDT Tue Sep 15 2026

GALE WARNING IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON

REST OF TODAY
West wind 20 to 25 knots. Gusts up to 30 knots increasing to 35 knots early in the afternoon, then decreasing to 30 knots late. Sunny. Waves 2 to 4 feet.

TONIGHT
West wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Mostly clear. Waves 1 to 2 feet.

WEDNESDAY
Northwest wind 5 knots becoming northeast late in the afternoon. Mostly sunny. Waves 1 foot or less.

WEDNESDAY NIGHT
East wind 5 to 10 knots becoming south after midnight. Slight chance of rain showers in the evening. Waves 1 foot or less.

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

WFO DLH