FZUS53 KDLH 231823 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 123 PM CDT Thu Apr 23 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. LSZ140-232200- Grand Portage to Grand Marais MN- 123 PM CDT Thu Apr 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TODAY...Northeast wind 15 to 20 knots with gusts to around 25 knots. Slight chance of rain and thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots early in the evening. Rain and chance of thunderstorms. Waves 3 to 5 feet. .FRIDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming northwest with gusts to around 20 knots in the late morning and afternoon. Rain and chance of thunderstorms in the morning, then chance of rain in the afternoon. Waves 3 to 5 feet. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 1 to 3 feet. $$ LSZ141-232200- Grand Marais to Taconite Harbor MN- 123 PM CDT Thu Apr 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TODAY...Northeast wind 15 to 20 knots with gusts to around 25 knots. Chance of rain and thunderstorms late. Waves 3 to 5 feet. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots in the late evening and overnight. Rain likely in the evening. Chance of thunderstorms through the night. Rain after midnight. Waves 2 to 4 feet. .FRIDAY...North wind 10 knots with gusts to around 20 knots becoming west with gusts to around 20 knots in the late morning and afternoon. Chance of rain and slight chance of thunderstorms in the morning, then slight chance of rain in the afternoon. Waves 2 to 4 feet. .FRIDAY NIGHT...Northwest wind 5 knots. Mostly clear. Waves 1 to 3 feet. $$ LSZ142-232200- Taconite Harbor to Silver Bay Harbor MN- 123 PM CDT Thu Apr 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TODAY...Northeast wind 15 to 20 knots. Chance of rain and thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Rain in the evening. Chance of thunderstorms through the night. Rain likely after midnight. Waves 2 to 4 feet. .FRIDAY...Northwest wind 5 to 10 knots with gusts to around 20 knots becoming west in the afternoon. Chance of rain in the morning. Waves 1 to 3 feet. .FRIDAY NIGHT...Northwest wind 5 knots becoming north after midnight. Mostly clear. Waves 1 to 2 feet. $$ LSZ143-232200- Silver Bay Harbor to Two Harbors MN- 123 PM CDT Thu Apr 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TODAY...Northeast wind 15 to 20 knots. Chance of rain and thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Northeast wind 15 to 20 knots becoming northwest 5 to 10 knots early in the morning. Rain in the evening. Chance of thunderstorms through the night. Rain likely after midnight. Waves 2 to 4 feet. .FRIDAY...West wind 5 to 10 knots. Gusts up to 20 knots early in the morning. Chance of rain in the morning. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 5 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. $$ LSZ144-232200- Two Harbors to Duluth MN- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...Northeast wind 15 to 20 knots. Slight chance of rain and thunderstorms early in the afternoon, then chance of rain and thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Northeast wind 15 to 20 knots becoming west 10 to 15 knots with gusts to around 20 knots early in the morning. Rain in the evening. Chance of thunderstorms through the night. Rain likely after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. .FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the morning. Chance of rain in the morning. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 to 10 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 foot or less. $$ LSZ145-232200- Duluth MN to Port Wing WI- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of rain and thunderstorms early in the afternoon, then rain likely and chance of thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north after midnight, then becoming west 5 to 10 knots early in the morning. Rain in the evening. Chance of thunderstorms through the night. Rain likely after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. .FRIDAY...West wind 10 to 15 knots with gusts to around 20 knots easing to 5 to 10 knots in the afternoon. Chance of rain in the morning. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 to 10 knots becoming north after midnight. Mostly clear. Waves 1 foot or less. $$ LSZ146-232200- Port Wing to Sand Island WI- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...Northeast wind 10 to 15 knots. Chance of rain and thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Northeast wind 10 to 15 knots becoming west early in the morning. Rain in the evening. Chance of thunderstorms through the night. Rain likely after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. .FRIDAY...West wind 10 to 15 knots becoming southwest late in the afternoon. Chance of rain in the morning. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 to 10 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. $$ LSZ147-232200- Sand Island to Bayfield WI- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...Southeast wind 10 knots becoming east late. Chance of rain and thunderstorms late. Waves 1 to 3 feet. .TONIGHT...Southeast wind 10 to 15 knots with gusts to around 20 knots becoming west early in the morning. Rain in the evening. Chance of thunderstorms through the night. Rain likely after midnight. Waves 2 to 4 feet subsiding to 1 to 3 feet early in the morning. .FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots in the morning. Rain likely and slight chance of thunderstorms in the morning. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. $$ LSZ150-232200- Outer Apostle Islands Beyond 5 NM from Mainland- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...East wind 10 to 15 knots with gusts to around 20 knots. Chance of rain and thunderstorms late. Waves 2 to 4 feet. .TONIGHT...Southeast wind 15 to 20 knots becoming southwest 10 to 15 knots early in the morning. Rain and chance of thunderstorms. Waves 2 to 4 feet. A small craft advisory may be needed. .FRIDAY...West wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Rain likely and slight chance of thunderstorms in the morning. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 5 to 10 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. $$ LSZ121-232200- Chequamegon Bay-Bayfield to Oak Point WI- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...South wind 10 to 15 knots with gusts to around 20 knots. Chance of rain and thunderstorms late. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots easing to 10 knots after midnight, then becoming west early in the morning. Rain and chance of thunderstorms. Waves 1 foot or less. .FRIDAY...West wind 5 to 10 knots. Rain likely and slight chance of thunderstorms in the morning. Waves 1 foot or less. .FRIDAY NIGHT...West wind 5 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 foot or less. $$ LSZ148-232200- Oak Point to Saxon Harbor WI- 123 PM CDT Thu Apr 23 2026 .REST OF TODAY...South wind 10 to 15 knots with gusts to around 20 knots. Chance of rain and thunderstorms late. Waves 1 foot or less. .TONIGHT...South wind 10 to 15 knots with gusts to around 20 knots becoming west 5 to 10 knots early in the morning. Rain and chance of thunderstorms. Waves 1 to 2 feet. .FRIDAY...West wind 5 to 10 knots. Rain likely and slight chance of thunderstorms in the morning. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 5 knots becoming north in the late evening and overnight. Mostly clear. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH