FZUS53 KDLH 170622 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 122 AM CDT Tue Mar 17 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. LSZ140-171600- Grand Portage to Grand Marais MN- 122 AM CDT Tue Mar 17 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 becoming southwest 5 to 10 knots in the afternoon. Mostly sunny until late afternoon then becoming mostly cloudy. Waves 1 to 2 feet. .TONIGHT...Southwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots late in the evening, then increasing to 30 knots after midnight decreasing to 25 knots early in the morning. Chance of snow through the night. Waves 1 to 3 feet building to 3 to 5 feet after midnight. A small craft advisory may be needed. .WEDNESDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots late in the afternoon. Slight chance of snow through the day. Waves 3 to 5 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...West wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 to 10 knots after midnight. Slight chance of rain and snow in the evening. Slight chance of light freezing rain through the night. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. Note...Wave height forecasts are for ice free areas. $$ LSZ141-171600- Grand Marais to Taconite Harbor MN- 122 AM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots. Gusts up to 25 knots. Chance of snow. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Slight chance of snow in the morning. Waves 1 to 3 feet. .WEDNESDAY NIGHT...West wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-171600- Taconite Harbor to Silver Bay Harbor MN- 122 AM CDT Tue Mar 17 2026 .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Sunny in the morning then becoming partly sunny. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 5 to 10 knots. Partly sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...West wind 5 knots becoming northwest after midnight. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-171600- Silver Bay Harbor to Two Harbors MN- 122 AM CDT Tue Mar 17 2026 .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Slight chance of snow late in the afternoon. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 5 to 10 knots. Slight chance of light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...West wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-171600- Two Harbors to Duluth MN- 122 AM CDT Tue Mar 17 2026 .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Slight chance of snow late in the afternoon. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Snow likely in the evening, then chance of snow and slight chance of light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 5 to 10 knots. Slight chance of light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...West wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-171600- Duluth MN to Port Wing WI- 122 AM CDT Tue Mar 17 2026 .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Slight chance of snow late in the afternoon. Waves 1 to 2 feet. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow through the night. Slight chance of light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots. Slight chance of light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-171600- Port Wing to Sand Island WI- 122 AM CDT Tue Mar 17 2026 .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Partly sunny. Waves 1 to 2 feet. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow through the night. Slight chance of light freezing drizzle after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots easing to 5 to 10 knots in the afternoon. Slight chance of light freezing drizzle in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain through the night. Slight chance of snow after midnight. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-171600- Sand Island to Bayfield WI- 122 AM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Partly sunny. Waves 1 to 2 feet. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots after midnight. Chance of snow through the night. Waves 1 foot or less. .WEDNESDAY...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain through the night. Slight chance of snow after midnight. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-171600- Outer Apostle Islands Beyond 5 NM from Mainland- 122 AM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 5 to 10 knots becoming southwest late in the afternoon. Partly sunny. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow. Waves 1 to 2 feet building to 1 to 3 feet after midnight. .WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain through the night. Slight chance of snow after midnight. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-171600- Oak Point to Saxon Harbor WI- 122 AM CDT Tue Mar 17 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS MORNING... .TODAY...Northwest wind 5 to 10 knots becoming southwest in the afternoon. Slight chance of snow early in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late morning and afternoon. .TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of snow in the evening. Slight chance of snow after midnight. Waves 1 to 2 feet. .WEDNESDAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly cloudy. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest early in the morning. Slight chance of rain through the night. Slight chance of snow after midnight. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH