FZUS53 KDLH 220246 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 946 PM CDT Fri Aug 21 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. LSZ140-221000- Grand Portage to Grand Marais MN- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...West wind 5 to 10 knots becoming northwest after midnight. Slight chance of thunderstorms late in the evening. Slight chance of rain showers in the late evening and early morning. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots late in the morning. Mostly sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 10 to 15 knots with gusts to around 20 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...North wind 5 to 10 knots with gusts to around 20 knots becoming south with gusts to around 20 knots in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ141-221000- Grand Marais to Taconite Harbor MN- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...West wind 5 knots becoming northwest after midnight. Chance of sprinkles late in the evening, then slight chance of showers and thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots with gusts to around 20 knots. Mostly sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...North wind 5 knots becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. $$ LSZ142-221000- Taconite Harbor to Silver Bay Harbor MN- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Chance of sprinkles in the late evening and early morning. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots with gusts to around 20 knots. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 knots. Partly cloudy. Waves 1 foot or less. .SUNDAY...North wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southeast 5 knots in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ143-221000- Silver Bay Harbor to Two Harbors MN- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Chance of sprinkles in the late evening and early morning. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 knots. Partly cloudy. Waves 1 foot or less. .SUNDAY...North wind 5 knots early in the morning becoming northeast, then becoming southeast early in the afternoon becoming variable 10 knots or less. Sunny. Waves 1 foot or less. $$ LSZ144-221000- Two Harbors to Duluth MN- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Northwest wind 5 to 10 knots. Chance of sprinkles late in the evening. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots with gusts to around 20 knots. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...North wind 5 knots becoming east in the late morning and afternoon. Sunny. Waves 1 foot or less. $$ LSZ145-221000- Duluth MN to Port Wing WI- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...West wind 5 to 10 knots. Chance of sprinkles in the late evening and early morning. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...North wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ146-221000- Port Wing to Sand Island WI- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Chance of sprinkles in the late evening and early morning. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...Northeast wind 5 knots until late afternoon becoming variable 10 knots or less. Sunny. Waves 1 foot or less. $$ LSZ147-221000- Sand Island to Bayfield WI- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Chance of sprinkles through the night. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the late morning and early afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...Northeast wind 5 to 10 knots becoming southeast late in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ150-221000- Outer Apostle Islands Beyond 5 NM from Mainland- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Chance of sprinkles through the night. Slight chance of thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Northwest wind 10 knots rising to 10 to 15 knots in the late morning and afternoon. Gusts up to 20 knots. Sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...North wind 5 to 10 knots. Mostly clear. Waves 1 foot or less. .SUNDAY...Northeast wind 5 to 10 knots becoming southeast late in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ121-221000- Chequamegon Bay-Bayfield to Oak Point WI- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...Northwest wind 5 to 10 knots. Chance of sprinkles through the night. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .SUNDAY...North wind 5 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ148-221000- Oak Point to Saxon Harbor WI- 946 PM CDT Fri Aug 21 2026 .REST OF TONIGHT...South wind 5 knots becoming west after midnight. Chance of sprinkles late in the evening, then chance of rain showers and slight chance of thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Northwest wind 5 to 10 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .SUNDAY...North wind 5 to 10 knots becoming northeast in the afternoon. Sunny. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH