Nearshore Marine Forecast
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
139 FZUS53 KDLH 050237 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 937 PM CDT Sat Oct 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. LSZ140-051015- Grand Portage to Grand Marais MN- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots after midnight. Partly cloudy. Waves 2 to 4 feet. .SUNDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 40 knots. Chance of rain showers in the afternoon. Waves 5 to 8 feet. Waves occasionally to 10 feet. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 20 to 25 knots with gales to around 40 knots becoming northwest 15 to 20 knots with gusts to around 30 knots after midnight. Slight chance of rain showers through the night. Waves 5 to 8 feet subsiding to 2 to 4 feet early in the morning. Waves occasionally to 11 feet. A gale warning may be needed. .MONDAY...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming southwest with gusts to around 20 knots in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LSZ141-051015- Grand Marais to Taconite Harbor MN- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...East wind 5 to 10 knots becoming south with gusts to around 20 knots after midnight. Partly cloudy in the late evening and early morning then becoming mostly cloudy. Waves 1 to 3 feet. .SUNDAY...South wind 15 to 20 knots. Gusts up to 25 knots increasing to 35 knots. Chance of showers in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots early in the morning. Slight chance of rain showers through the night. Waves 4 to 6 feet subsiding to 1 to 3 feet early in the morning. Waves occasionally to 8 feet. A gale warning may be needed. .MONDAY...Northwest wind 5 to 10 knots with gusts to around 20 knots becoming west in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LSZ142-051015- Taconite Harbor to Silver Bay Harbor MN- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...East wind 5 knots becoming south with gusts to around 20 knots after midnight. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...South wind 15 to 20 knots. Gusts up to 20 knots increasing to 35 knots. Chance of showers in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet in the late morning and afternoon. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gales to around 35 knots becoming west 10 to 15 knots with gusts to around 30 knots in the late evening and early morning, then becoming northwest 5 to 10 knots with gusts to around 20 knots early in the morning. Slight chance of rain showers through the night. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. A gale warning may be needed. .MONDAY...Northwest wind 5 knots becoming west in the afternoon. Mostly sunny. Waves 1 foot or less. $$ LSZ143-051015- Silver Bay Harbor to Two Harbors MN- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...Southeast wind 5 to 10 knots with gusts to around 20 knots becoming southwest 10 to 15 knots with gusts to around 25 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 35 knots. Chance of showers in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. A gale warning may be needed. .SUNDAY NIGHT...West wind 15 to 20 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots after midnight. Slight chance of rain showers in the evening. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. Waves occasionally to 7 feet. A gale warning may be needed. .MONDAY...Northwest wind 5 to 10 knots becoming west in the afternoon. Mostly sunny. Waves 1 foot or less. $$ LSZ144-051015- Two Harbors to Duluth MN- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...East wind 5 to 10 knots with gusts to around 20 knots becoming south 10 to 15 knots with gusts to around 25 knots after midnight. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...Southwest wind 20 to 25 knots. Gusts up to 25 knots increasing to 35 knots. Slight chance of showers in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. A gale warning may be needed. .SUNDAY NIGHT...West wind 15 to 20 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. Waves occasionally to 7 feet. A gale warning may be needed. .MONDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. $$ LSZ145-051015- Duluth MN to Port Wing WI- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to 25 knots increasing to 30 knots toward daybreak. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...South wind 20 to 25 knots. Gusts up to 30 knots increasing to 35 knots in the late morning and afternoon. Slight chance of showers in the afternoon. Waves 1 to 3 feet building to 3 to 5 feet in the late morning and afternoon. A gale warning may be needed. .SUNDAY NIGHT...West wind 20 to 25 knots with gales to around 35 knots becoming northwest 15 to 20 knots with gusts to around 25 knots after midnight. Slight chance of rain showers in the evening. Waves 3 to 5 feet subsiding to 1 to 2 feet early in the morning. A gale warning may be needed. .MONDAY...West wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. $$ LSZ146-051015- Port Wing to Sand Island WI- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 10 to 15 knots with gusts to around 25 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...South wind 5 to 15 knots with gusts to around 30 knots rising to 15 to 20 knots with gales to around 35 knots in the late morning and afternoon. Chance of showers in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet in the late morning and afternoon. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots after midnight. Slight chance of rain showers through the night. Waves 3 to 5 feet subsiding to 1 to 2 feet early in the morning. Waves occasionally to 7 feet. A gale warning may be needed. .MONDAY...West wind 5 to 10 knots with gusts to around 20 knots becoming southwest late in the afternoon. Mostly sunny. Waves 1 foot or less. $$ LSZ147-051015- Sand Island to Bayfield WI- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 10 to 15 knots. Gusts up to 20 knots increasing to 30 knots. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...South wind 15 to 20 knots. Gusts up to 30 knots increasing to 35 knots late in the afternoon. Chance of showers in the afternoon. Waves 1 to 3 feet. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 20 knots early in the morning. Chance of rain showers in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet early in the morning. A gale warning may be needed. .MONDAY...West wind 5 to 10 knots with gusts to around 20 knots becoming west 5 to 10 knots late in the afternoon. Mostly sunny. Waves 1 to 2 feet. $$ LSZ150-051015- Outer Apostle Islands Beyond 5 NM from Mainland- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 15 to 20 knots. Gusts up to 20 knots increasing to 30 knots after midnight. Partly cloudy. Waves 3 to 5 feet. .SUNDAY...South wind 20 to 25 knots becoming southwest 10 to 20 knots late in the afternoon. Gusts up to 30 knots increasing to 35 knots late in the afternoon. Chance of showers in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gusts to around 30 knots becoming northwest 10 to 15 knots with gusts to around 25 knots early in the morning. Chance of rain showers through the night. Waves 3 to 5 feet. A small craft advisory may be needed. .MONDAY...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet. $$ LSZ121-051015- Chequamegon Bay-Bayfield to Oak Point WI- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 15 to 20 knots with gusts to around 25 knots. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...South wind 15 to 20 knots. Gusts up to 25 knots increasing to 35 knots. Chance of showers in the afternoon. Waves 1 to 3 feet. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gales to around 35 knots becoming west with gusts to around 25 knots in the late evening and early morning, then becoming northwest 5 to 10 knots with gusts to around 20 knots early in the morning. Chance of rain showers through the night. Waves 1 to 2 feet. A gale warning may be needed. .MONDAY...Northwest wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. $$ LSZ148-051015- Oak Point to Saxon Harbor WI- 937 PM CDT Sat Oct 4 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY MORNING... ...GALE WATCH IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .REST OF TONIGHT...South wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots after midnight. Mostly clear. Waves 1 to 2 feet building to 1 to 3 feet after midnight. .SUNDAY...South wind 20 to 25 knots. Gusts up to 30 knots increasing to 35 knots in the late morning and afternoon. Chance of showers in the afternoon. Waves 2 to 4 feet. A gale warning may be needed. .SUNDAY NIGHT...Southwest wind 15 to 20 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 20 knots early in the morning. Chance of rain showers through the night. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. A gale warning may be needed. .MONDAY...Northwest wind 5 to 10 knots. Mostly sunny. Waves 1 to 2 feet. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes NLy