FZUS53 KDLH 220751 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 251 AM CDT Wed Apr 22 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. LSZ140-221600- Grand Portage to Grand Marais MN- 251 AM CDT Wed Apr 22 2026 .TODAY...East wind 10 to 15 knots. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of showers and thunderstorms after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .THURSDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Slight chance of rain showers in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .THURSDAY NIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots in the evening. Rain showers and chance of thunderstorms. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. $$ LSZ141-221600- Grand Marais to Taconite Harbor MN- 251 AM CDT Wed Apr 22 2026 .TODAY...East wind 10 to 15 knots. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of showers and thunderstorms. Waves 1 to 3 feet. .THURSDAY...East wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Chance of rain showers in the afternoon. Waves 3 to 5 feet. A small craft advisory may be needed. .THURSDAY NIGHT...East wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Rain showers and chance of thunderstorms. Waves 4 to 6 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. $$ LSZ142-221600- Taconite Harbor to Silver Bay Harbor MN- 251 AM CDT Wed Apr 22 2026 .TODAY...Northeast wind 5 to 10 knots. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of showers and thunderstorms. Waves 1 to 3 feet. .THURSDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 3 to 5 feet. A small craft advisory may be needed. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the evening. Rain showers and chance of thunderstorms. Waves 3 to 5 feet. A small craft advisory may be needed. $$ LSZ143-221600- Silver Bay Harbor to Two Harbors MN- 251 AM CDT Wed Apr 22 2026 .TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Rain showers and chance of thunderstorms. Waves 2 to 4 feet. A small craft advisory may be needed. $$ LSZ144-221600- Two Harbors to Duluth MN- 251 AM CDT Wed Apr 22 2026 .TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 feet. .THURSDAY...East wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Rain showers and chance of thunderstorms. Waves 1 to 3 feet. $$ LSZ145-221600- Duluth MN to Port Wing WI- 251 AM CDT Wed Apr 22 2026 .TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots until early morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 feet. .THURSDAY...East wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 to 10 knots early in the morning. Rain showers and chance of thunderstorms. Waves 1 to 3 feet. $$ LSZ146-221600- Port Wing to Sand Island WI- 251 AM CDT Wed Apr 22 2026 .TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the evening. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. .THURSDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Rain showers and chance of thunderstorms. Waves 2 to 4 feet. $$ LSZ147-221600- Sand Island to Bayfield WI- 251 AM CDT Wed Apr 22 2026 .TODAY...East wind 5 to 10 knots becoming northeast late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots becoming east after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. .THURSDAY...East wind 5 to 10 knots. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .THURSDAY NIGHT...East wind 5 to 10 knots. Rain showers and chance of thunderstorms. Waves 2 to 4 feet. $$ LSZ150-221600- Outer Apostle Islands Beyond 5 NM from Mainland- 251 AM CDT Wed Apr 22 2026 .TODAY...East wind 5 knots becoming northeast 10 to 15 knots with gusts to around 20 knots in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots becoming southeast 5 to 10 knots after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 feet. .THURSDAY...East wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Slight chance of rain showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. A small craft advisory may be needed. .THURSDAY NIGHT...East wind 10 to 15 knots. Rain showers and chance of thunderstorms. Waves 3 to 5 feet. A small craft advisory may be needed. $$ LSZ121-221600- Chequamegon Bay-Bayfield to Oak Point WI- 251 AM CDT Wed Apr 22 2026 .TODAY...Southeast wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots becoming southeast after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .THURSDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Chance of rain showers and slight chance of thunderstorms in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...Southeast wind 5 to 10 knots. Rain showers and chance of thunderstorms. Waves 1 foot or less. $$ LSZ148-221600- Oak Point to Saxon Harbor WI- 251 AM CDT Wed Apr 22 2026 .TODAY...Southeast wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots becoming southeast with gusts to around 20 knots after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. .THURSDAY...South wind 10 to 15 knots. Gusts up to 20 knots in the late morning and afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet. .THURSDAY NIGHT...Southeast wind 5 to 10 knots. Rain showers and chance of thunderstorms. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH