


Nearshore Marine Forecast
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
139 FZUS53 KDLH 041458 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 958 AM CDT Fri Jul 4 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. LSZ140-141-042215- Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...East wind 5 to 10 knots. Chance of showers and thunderstorms late in the morning. Slight chance of showers and thunderstorms late. Waves 1 to 2 feet. .TONIGHT...South wind 5 knots becoming southwest in the late evening and overnight. Chance of showers and thunderstorms. Waves 1 to 2 feet. .SATURDAY...South wind 5 to 10 knots becoming northwest late in the afternoon. Rain showers and chance of thunderstorms. Waves 1 to 2 feet. .SATURDAY NIGHT...North wind 10 to 15 knots with gusts to around 20 knots. Rain showers and chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Waves 1 to 2 feet. $$ LSZ142-143-042215- Taconite Harbor to Silver Bay Harbor MN- Silver Bay Harbor to Two Harbors MN- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...Northeast wind 5 to 10 knots. Slight chance of showers and thunderstorms late in the morning. Waves 1 foot or less. .TONIGHT...Southeast wind 5 to 10 knots becoming southwest in the late evening and overnight. Slight chance of showers and thunderstorms in the evening, then rain showers likely and chance of thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 knots becoming northwest late in the afternoon. Rain showers and chance of thunderstorms. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots. Gusts up to 20 knots until early morning. Rain showers and chance of thunderstorms in the evening. Waves 1 foot or less. $$ LSZ144-042215- Two Harbors to Duluth MN- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...East wind 5 to 10 knots. Gusts up to 20 knots late. Slight chance of showers and thunderstorms late in the morning. Waves 1 to 2 feet. .TONIGHT...South wind 5 to 10 knots with gusts to around 20 knots becoming south 5 to 10 knots in the late evening and overnight. Slight chance of showers and thunderstorms in the evening, then showers likely and chance of thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots becoming northwest late in the afternoon. Showers and chance of thunderstorms. Waves 1 foot or less. .SATURDAY NIGHT...North wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Rain showers and chance of thunderstorms in the evening. Waves 1 foot or less. $$ LSZ145-042215- Duluth MN to Port Wing WI- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...Northeast wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Slight chance of showers and thunderstorms late in the morning. Waves 1 to 2 feet. .TONIGHT...South wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots becoming northwest late in the afternoon. Showers and chance of thunderstorms. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the evening. Rain showers and chance of thunderstorms in the evening. Waves 1 to 2 feet. $$ LSZ146-042215- Port Wing to Sand Island WI- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...Northeast wind 5 to 10 knots. Slight chance of showers and thunderstorms late in the morning. Waves 1 foot or less. .TONIGHT...South wind 5 to 10 knots becoming southwest in the late evening and overnight. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots becoming northwest late in the afternoon. Rain showers likely in the morning. Chance of thunderstorms through the day. Rain showers in the afternoon. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 to 10 knots. Rain showers and chance of thunderstorms in the evening. Waves 1 foot or less. $$ LSZ147-042215- Sand Island to Bayfield WI- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...East wind 5 to 10 knots becoming southeast late. Slight chance of showers and thunderstorms late in the morning. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots becoming west in the afternoon. Rain showers and chance of thunderstorms. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 to 10 knots. Rain showers and chance of thunderstorms in the evening, then chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ150-042215- Outer Apostle Islands Beyond 5 NM from Mainland- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...Southeast wind 5 to 10 knots. Slight chance of showers and thunderstorms late in the morning. Waves 1 to 2 feet. .TONIGHT...Southwest wind 10 to 15 knots. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms after midnight. Waves 1 to 2 feet. .SATURDAY...Southwest wind 5 to 10 knots becoming west in the afternoon. Rain showers likely in the morning. Chance of thunderstorms through the day. Rain showers in the afternoon. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 5 to 10 knots. Rain showers and chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Waves 1 to 2 feet. $$ LSZ121-042215- Chequamegon Bay-Bayfield to Oak Point WI- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...South wind 10 to 15 knots. Gusts up to 20 knots late. Slight chance of showers and thunderstorms late in the morning. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Chance of showers and thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots becoming north late in the afternoon. Showers likely in the morning. Chance of thunderstorms through the day. Showers in the afternoon. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 to 10 knots. Rain showers and chance of thunderstorms in the evening, then chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ148-042215- Oak Point to Saxon Harbor WI- 958 AM CDT Fri Jul 4 2025 .REST OF TODAY...South wind 5 to 10 knots. Gusts up to 20 knots late. Slight chance of showers and thunderstorms late in the morning. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening then 20 knots early in the morning. Chance of showers and thunderstorms after midnight. Waves 1 foot or less. .SATURDAY...Southwest wind 5 to 10 knots becoming north late in the afternoon. Showers likely in the morning. Chance of thunderstorms through the day. Showers in the afternoon. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 to 10 knots becoming northwest after midnight. Rain showers and chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes Wolfe