FZUS53 KDLH 191748 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1248 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. LSZ140-192200- Grand Portage to Grand Marais MN- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...Northwest wind 10 to 15 knots easing to 5 knots early in the morning. 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 2 to 4 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. Note...Wave height forecasts are for ice free areas. $$ LSZ141-192200- Grand Marais to Taconite Harbor MN- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...Northwest wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Southwest wind 5 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots after midnight, then becoming northwest early in the morning. Partly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-192200- Taconite Harbor to Silver Bay Harbor MN- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .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. Note...Wave height forecasts are for ice free areas. $$ LSZ143-192200- Silver Bay Harbor to Two Harbors MN- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 knots. Sunny. Waves 1 foot or less. .TONIGHT...North wind 5 knots becoming southeast early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Partly sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy in the evening then becoming clear. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-192200- Two Harbors to Duluth MN- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...North wind 5 to 10 knots becoming south early in the morning. 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. Note...Wave height forecasts are for ice free areas. $$ LSZ145-192200- Duluth MN to Port Wing WI- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...North wind 5 to 10 knots becoming southeast early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 25 knots becoming west 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-192200- Port Wing to Sand Island WI- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...North wind 5 to 10 knots easing to 5 knots after midnight, then becoming southeast early in the morning. 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. Note...Wave height forecasts are for ice free areas. $$ LSZ147-192200- Sand Island to Bayfield WI- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...North wind 5 knots becoming east early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy in the evening then clearing. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-192200- Outer Apostle Islands Beyond 5 NM from Mainland- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 3 feet subsiding to 1 to 2 feet late. .TONIGHT...North wind 5 knots becoming northeast early in the morning. Mostly clear. Waves 1 to 2 feet. .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. Note...Wave height forecasts are for ice free areas. $$ LSZ121-192200- Chequamegon Bay-Bayfield to Oak Point WI- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...North wind 5 knots becoming southeast early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots until early morning. Partly cloudy in the evening then becoming clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-192200- Oak Point to Saxon Harbor WI- 1248 PM CDT Sun Apr 19 2026 .REST OF TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...North wind 5 knots becoming east early in the morning. 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. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH