FZUS53 KDLH 190623 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 123 AM 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. LSZ140-191600- Grand Portage to Grand Marais MN- 123 AM CDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...Northwest wind 5 to 10 knots. 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. Mostly sunny in the morning then becoming mostly cloudy. 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 30 knots becoming west with gusts to around 25 knots after midnight. Mostly cloudy in the evening then clearing. Waves 3 to 5 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ141-191600- Grand Marais to Taconite Harbor MN- 123 AM CDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 10 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .TONIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .MONDAY...Southwest wind 5 knots becoming south 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Mostly sunny in the morning then becoming mostly cloudy. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots after midnight. Partly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-191600- Taconite Harbor to Silver Bay Harbor MN- 123 AM CDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 10 knots with gusts to around 20 knots rising to 10 to 15 knots with gusts to around 20 knots in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .TONIGHT...Northwest wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 5 to 10 knots. Gusts up to 20 knots late in the afternoon. Partly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 to 10 knots with gusts to around 20 knots becoming west early in the morning. Mostly clear. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-191600- Silver Bay Harbor to Two Harbors MN- 123 AM CDT Sun Apr 19 2026 .TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...Northwest wind 5 to 10 knots. Clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Partly sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-191600- Two Harbors to Duluth MN- 123 AM CDT Sun Apr 19 2026 .TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...North wind 5 to 10 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. Partly sunny. Waves 1 to 3 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. Partly cloudy in the evening then becoming clear. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ145-191600- Duluth MN to Port Wing WI- 123 AM CDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 10 to 15 knots easing to 5 to 10 knots in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...North wind 5 to 10 knots becoming south early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots early in the morning. Partly cloudy in the evening then becoming clear. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-191600- Port Wing to Sand Island WI- 123 AM CDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 10 to 15 knots. Sunny. Waves 1 to 3 feet. .TONIGHT...North wind 5 to 10 knots becoming southeast early in the morning. Clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Partly sunny. Waves 1 foot or less. .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 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-191600- Sand Island to Bayfield WI- 123 AM CDT Sun Apr 19 2026 .TODAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Sunny. Waves 1 to 3 feet. .TONIGHT...North wind 5 to 10 knots becoming northeast early in the morning. Clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Partly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 to 10 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-191600- Outer Apostle Islands Beyond 5 NM from Mainland- 123 AM CDT Sun Apr 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the morning. Sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet late in the afternoon. .TONIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 to 2 feet. .MONDAY...South wind 10 to 15 knots. Gusts up to 20 knots late in the afternoon. Partly sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots becoming west early in the morning. Gusts up to 20 knots. Partly cloudy. Waves 1 to 2 feet building to 1 to 3 feet in the late evening and early morning, then subsiding to 1 to 2 feet early in the morning. Note...Wave height forecasts are for ice free areas. $$ LSZ121-191600- Chequamegon Bay-Bayfield to Oak Point WI- 123 AM CDT Sun Apr 19 2026 .TODAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...North wind 5 knots becoming southwest early in the morning. Clear. Waves 1 foot or less. .MONDAY...South wind 10 to 15 knots with gusts to around 20 knots. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to 20 knots until early morning. Mostly clear. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-191600- Oak Point to Saxon Harbor WI- 123 AM CDT Sun Apr 19 2026 .TODAY...Northwest wind 10 to 15 knots. Sunny. Waves 1 to 3 feet. .TONIGHT...North wind 5 knots becoming west 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. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots early in the morning. Partly cloudy. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH