Nearshore Marine Forecast
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
631 FZUS53 KDLH 312108 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 408 PM CDT Thu Jul 31 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. LSZ140-141-010415- Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- 408 PM CDT Thu Jul 31 2025 .TONIGHT...West wind 5 to 10 knots. Areas of smoke. Waves 1 foot or less. .FRIDAY...Southwest wind 15 to 20 knots. Areas of smoke. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Areas of smoke. Waves 1 to 3 feet. .SATURDAY...West wind 10 to 15 knots with gusts to around 20 knots becoming southwest with gusts to around 25 knots late in the afternoon. Areas of smoke in the morning. Waves 1 to 2 feet building to 1 to 3 feet late in the afternoon. $$ LSZ142-143-010415- Taconite Harbor to Silver Bay Harbor MN- Silver Bay Harbor to Two Harbors MN- 408 PM CDT Thu Jul 31 2025 .TONIGHT...South wind 5 knots becoming west in the late evening and overnight. Areas of smoke. Waves 1 foot or less. .FRIDAY...Southwest wind 5 knots rising to 5 to 10 knots in the afternoon. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...West wind 5 to 10 knots. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ LSZ144-145-010415- Two Harbors to Duluth MN-Duluth MN to Port Wing WI- 408 PM CDT Thu Jul 31 2025 .TONIGHT...Northeast wind 5 knots becoming west after midnight. Areas of smoke. Waves 1 foot or less. .FRIDAY...Southwest wind 5 knots becoming south late in the afternoon. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ LSZ146-010415- Port Wing to Sand Island WI- 408 PM CDT Thu Jul 31 2025 .TONIGHT...East wind 5 knots becoming southwest in the late evening and overnight. Areas of smoke. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ LSZ147-010415- Sand Island to Bayfield WI- 408 PM CDT Thu Jul 31 2025 .TONIGHT...South wind 5 knots becoming southwest in the late evening and overnight. Areas of smoke. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ LSZ150-010415- Outer Apostle Islands Beyond 5 NM from Mainland- 408 PM CDT Thu Jul 31 2025 .TONIGHT...South wind 5 knots becoming southwest after midnight. Areas of smoke through the night. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 knots. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ LSZ121-010415- Chequamegon Bay-Bayfield to Oak Point WI- 408 PM CDT Thu Jul 31 2025 .TONIGHT...Southeast wind 5 knots becoming southwest in the late evening and overnight. Areas of smoke. Waves 1 foot or less. .FRIDAY...Southwest wind 5 knots becoming east late in the afternoon. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...Southeast wind 5 knots becoming southwest in the late evening and overnight. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ LSZ148-010415- Oak Point to Saxon Harbor WI- 408 PM CDT Thu Jul 31 2025 .TONIGHT...Southeast wind 5 knots becoming southwest in the late evening and overnight. Areas of smoke through the night. Waves 1 foot or less. .FRIDAY...Southwest wind 5 to 10 knots becoming east late in the afternoon. Areas of smoke. Waves 1 foot or less. .FRIDAY NIGHT...Southeast wind 5 knots becoming southwest in the late evening and overnight. Areas of smoke. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots. Areas of smoke in the morning. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes Huyck