Station List

National Weather Service Marine Forecast FZUS53 KDLH

FZUS53 KDLH 181000
NSHDLH

Nearshore Marine Forecast
National Weather Service Duluth MN
500 AM CDT Sat Apr 18 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.

LSZ140-181600
Grand Portage to Grand Marais MN
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TODAY
West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Chance of flurries in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet.

TONIGHT
Northwest wind 20 to 25 knots. Gusts up to 30 knots decreasing to 25 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally to 7 feet.

SUNDAY
Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet.

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

Note...Wave height forecasts are for ice free areas.

LSZ141-181600
Grand Marais to Taconite Harbor MN
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TODAY
West wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Chance of flurries in the afternoon. Waves 3 to 5 feet.

TONIGHT
Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight.

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

SUNDAY NIGHT
Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ142-181600
Taconite Harbor to Silver Bay Harbor MN
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TODAY
West wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 2 feet building to 1 to 3 feet in the afternoon.

TONIGHT
West wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots after midnight. Mostly cloudy in the evening then clearing. Waves 1 to 3 feet.

SUNDAY
Northwest wind 5 to 10 knots. Gusts up to 20 knots in the morning. Sunny. Waves 1 foot or less.

SUNDAY NIGHT
Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ143-181600
Silver Bay Harbor to Two Harbors MN
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
West wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon.

TONIGHT
West wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots after midnight. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight.

SUNDAY
Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 foot or less.

SUNDAY NIGHT
Northwest wind 5 knots. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ144-181600
Two Harbors to Duluth MN
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
West wind 20 to 25 knots with gusts to around 30 knots. Partly sunny. Waves 2 to 4 feet.

TONIGHT
West wind 20 to 25 knots with gusts to around 30 knots becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight.

SUNDAY
Northwest wind 10 to 15 knots. Sunny. Waves 1 foot or less.

SUNDAY NIGHT
Northwest wind 5 to 10 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ145-181600
Duluth MN to Port Wing WI
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TODAY
West wind 20 to 25 knots with gusts to around 30 knots. Chance of flurries early in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet.

TONIGHT
West wind 20 to 25 knots with gusts to around 30 knots becoming northwest 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet.

SUNDAY
Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Northwest wind 5 to 10 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ146-181600
Port Wing to Sand Island WI
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TODAY
West wind 20 to 25 knots with gusts to around 30 knots. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet.

TONIGHT
Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Mostly cloudy in the evening then becoming partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet.

SUNDAY
Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots late in the afternoon. Sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Northwest wind 5 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ147-181600
Sand Island to Bayfield WI
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
West wind 15 to 20 knots with gusts to around 30 knots. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet.

TONIGHT
Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Chance of sprinkles in the evening. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet.

SUNDAY
Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots late in the afternoon. Sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Northwest wind 5 knots becoming north after midnight, then becoming east early in the morning. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ150-181600
Outer Apostle Islands Beyond 5 NM from Mainland
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TODAY
West wind 20 to 25 knots with gusts to around 30 knots. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 4 to 7 feet. Waves occasionally to 9 feet.

TONIGHT
Northwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 20 knots. Chance of sprinkles and flurries in the evening. Waves 4 to 7 feet subsiding to 2 to 4 feet early in the morning. Waves occasionally to 9 feet.

SUNDAY
Northwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon.

SUNDAY NIGHT
Northwest wind 5 to 10 knots becoming northeast early in the morning. Mostly clear. Waves 1 to 2 feet.

Note...Wave height forecasts are for ice free areas.

LSZ121-181600
Chequamegon Bay-Bayfield to Oak Point WI
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots late in the afternoon. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 1 to 2 feet.

TONIGHT
West wind 15 to 20 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots after midnight. Chance of sprinkles in the evening. Waves 1 to 2 feet.

SUNDAY
Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less.

SUNDAY NIGHT
Northwest wind 5 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

LSZ148-181600
Oak Point to Saxon Harbor WI
500 AM CDT Sat Apr 18 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING

TODAY
West wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Chance of flurries in the afternoon. Chance of sprinkles late in the afternoon. Waves 2 to 4 feet.

TONIGHT
Northwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Chance of sprinkles and flurries in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight.

SUNDAY
Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 to 2 feet.

SUNDAY NIGHT
Northwest wind 5 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less.

Note...Wave height forecasts are for ice free areas.

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

WFO DLH