FZUS53 KDLH 192200 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 500 PM CDT Sun Apr 19 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. LSZ140-200400- Grand Portage to Grand Marais MN- 500 PM CDT Sun Apr 19 2026 .TONIGHT...Northwest wind 10 to 15 knots easing to 5 knots late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming south 15 to 20 knots with gusts to around 25 knots in the afternoon. Slight chance of snow in the afternoon. Waves 1 to 2 feet building to 3 to 5 feet in the afternoon. A small craft advisory may be needed. .MONDAY NIGHT...Southwest wind 15 to 20 knots with gusts to around 25 knots becoming west 10 to 15 knots with gusts to around 25 knots after midnight. Mostly cloudy in the evening then clearing. Waves 3 to 5 feet. A small craft advisory may be needed. .TUESDAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-200400- Grand Marais to Taconite Harbor MN- 500 PM CDT Sun Apr 19 2026 .TONIGHT...Northwest wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Southwest wind 5 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots after midnight, then becoming northwest early in the morning. Partly cloudy. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 knots becoming southwest in the afternoon. Sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-200400- Taconite Harbor to Silver Bay Harbor MN- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 to 10 knots with gusts to around 20 knots becoming northwest early in the morning. Partly cloudy in the evening then clearing. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-200400- Silver Bay Harbor to Two Harbors MN- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 knots becoming southeast late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Partly sunny. Waves 1 to 3 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy in the evening then becoming clear. Waves 1 to 3 feet. .TUESDAY...Northwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southwest 5 knots in the afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-200400- Two Harbors to Duluth MN- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 to 10 knots becoming south late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 25 knots becoming west 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 3 feet. .TUESDAY...Northwest wind 5 knots. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-200400- Duluth MN to Port Wing WI- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 to 10 knots becoming southeast late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 25 knots becoming west 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 3 feet. .TUESDAY...Northwest wind 5 knots becoming north in the late morning and afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-200400- Port Wing to Sand Island WI- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 to 10 knots easing to 5 knots after midnight, then becoming southeast late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Mostly clear. Waves 1 to 2 feet. .TUESDAY...West wind 5 knots becoming northwest late in the morning, then becoming west early in the afternoon becoming southwest late in the afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-200400- Sand Island to Bayfield WI- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 knots becoming east late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy in the evening then clearing. Waves 1 to 2 feet. .TUESDAY...Northwest wind 5 knots becoming southeast late in the afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-200400- Outer Apostle Islands Beyond 5 NM from Mainland- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 knots becoming northeast late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots. Gusts up to 20 knots late in the afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 3 feet. .TUESDAY...Northwest wind 5 knots becoming south late in the afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ121-200400- Chequamegon Bay-Bayfield to Oak Point WI- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 knots becoming southeast late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots until early morning. Partly cloudy in the evening then becoming clear. Waves 1 foot or less. .TUESDAY...West wind 5 knots becoming northeast late in the afternoon. Sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-200400- Oak Point to Saxon Harbor WI- 500 PM CDT Sun Apr 19 2026 .TONIGHT...North wind 5 knots becoming east late in the night. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 25 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly clear. Waves 1 to 2 feet. .TUESDAY...West wind 5 knots becoming east late in the afternoon. Sunny. 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