Nearshore Marine Forecast
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
622 FZUS53 KDLH 282048 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 348 PM CDT Thu Aug 28 2025 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. LSZ140-141-290415- Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- 348 PM CDT Thu Aug 28 2025 .TONIGHT...Southeast wind 10 to 15 knots easing to 5 knots in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. .FRIDAY...Southeast wind 5 to 10 knots. Sunny. Waves 1 foot or less. .FRIDAY NIGHT...South wind 5 to 10 knots becoming west in the late evening and overnight. Mostly clear. Waves 1 foot or less. .SATURDAY...West wind 5 to 10 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ143-290415- Silver Bay Harbor to Two Harbors MN- 348 PM CDT Thu Aug 28 2025 .TONIGHT...East wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots in the late evening and overnight. Partly cloudy. Waves 1 to 3 feet. .FRIDAY...East wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming northwest early in the morning. Partly cloudy. Waves 1 foot or less. .SATURDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southwest 5 knots early in the afternoon becoming variable 10 knots or less. Mostly sunny. Waves 1 foot or less. $$ LSZ142-290415- Taconite Harbor to Silver Bay Harbor MN- 348 PM CDT Thu Aug 28 2025 .TONIGHT...East wind 5 to 10 knots until early morning becoming variable 10 knots or less. Mostly clear. Waves 1 to 2 feet. .FRIDAY...Variable winds 10 knots or less becoming east 5 knots early in the afternoon, then becoming variable 10 knots or less late in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .SATURDAY...Variable winds 10 knots or less becoming southwest 5 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. $$ LSZ144-145-290415- Two Harbors to Duluth MN-Duluth MN to Port Wing WI- 348 PM CDT Thu Aug 28 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...East wind 10 to 15 knots with gusts to around 25 knots easing to 5 knots after midnight. Mostly clear until early morning then becoming mostly cloudy. Waves 3 to 4 feet. .FRIDAY...East wind 5 knots becoming northeast in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots. Partly cloudy. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming south 5 knots early in the afternoon becoming southeast. Mostly sunny. Waves 1 foot or less. $$ LSZ146-290415- Port Wing to Sand Island WI- 348 PM CDT Thu Aug 28 2025 .TONIGHT...East wind 10 to 15 knots easing to 5 knots in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. .FRIDAY...Southeast wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming southeast after midnight, then becoming southwest early in the morning. Partly cloudy. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots early in the morning becoming variable 10 knots or less. Mostly sunny. Waves 1 foot or less. $$ LSZ147-290415- Sand Island to Bayfield WI- 348 PM CDT Thu Aug 28 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...East wind 5 to 10 knots becoming southeast late in the night. Mostly clear. Waves 1 to 2 feet. .FRIDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming southwest 5 knots early in the afternoon becoming south. Sunny. Waves 1 foot or less. $$ LSZ150-290415- Outer Apostle Islands Beyond 5 NM from Mainland- 348 PM CDT Thu Aug 28 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...East wind 10 to 15 knots becoming southeast 5 knots after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .FRIDAY...South wind 5 knots becoming east late in the afternoon. Sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots becoming south late in the afternoon. Sunny. Waves 1 foot or less. $$ LSZ121-290415- Chequamegon Bay-Bayfield to Oak Point WI- 348 PM CDT Thu Aug 28 2025 .TONIGHT...East wind 10 to 15 knots easing to 5 knots in the late evening and early morning, then becoming southeast late in the night. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .FRIDAY...South wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 knots in the afternoon. Sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming north 5 knots early in the afternoon becoming east. Sunny. Waves 1 foot or less. $$ LSZ148-290415- Oak Point to Saxon Harbor WI- 348 PM CDT Thu Aug 28 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...East wind 10 to 15 knots easing to 5 knots in the late evening and early morning, then becoming south late in the night. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. .FRIDAY...South wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots becoming south after midnight. Mostly clear. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots becoming northwest early in the afternoon, then becoming northeast late in the afternoon. Sunny. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes NLy