FZUS53 KDLH 230737 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 237 AM CDT Sat May 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. LSZ140-231600- Grand Portage to Grand Marais MN- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Chance of rain showers until late afternoon, then rain showers likely late in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...Northeast wind 5 to 10 knots becoming north early in the morning. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 to 3 feet. .SUNDAY...Southwest wind 10 to 15 knots with gusts to around 20 knots. Slight chance of rain showers in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...Southwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. $$ LSZ141-231600- Grand Marais to Taconite Harbor MN- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots until late afternoon. Rain showers likely early in the morning, then rain showers in the late morning and early afternoon. Chance of rain showers late in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...Northeast wind 5 to 10 knots until early morning becoming variable 10 knots or less. Slight chance of rain showers in the evening. Waves 1 to 3 feet. .SUNDAY...West wind 5 knots becoming southwest in the late morning and afternoon. Chance of rain showers in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...West wind 5 knots early in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less. $$ LSZ142-231600- Taconite Harbor to Silver Bay Harbor MN- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Rain showers until late afternoon, then slight chance of rain showers late in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TONIGHT...Northeast wind 5 to 10 knots in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 to 2 feet. .SUNDAY...West wind 5 knots becoming southwest in the late morning and afternoon. Chance of rain showers in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...West wind 5 knots early in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less. $$ LSZ143-231600- Silver Bay Harbor to Two Harbors MN- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...Northeast wind 10 to 15 knots with gusts to around 25 knots. Rain showers likely in the morning, then chance of rain showers early in the afternoon. Slight chance of rain showers late in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the evening, then becoming variable 10 knots or less after midnight. Mostly cloudy. Waves 1 to 2 feet. .SUNDAY...Southwest wind 5 knots becoming south in the afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet. .SUNDAY NIGHT...Southwest wind 5 knots becoming northwest late in the evening, then becoming variable 10 knots or less after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ144-231600- Two Harbors to Duluth MN- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .TODAY...Northeast wind 15 to 20 knots with gusts to around 25 knots. Rain showers likely early in the morning, then chance of rain showers late in the morning. Slight chance of rain showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the evening, then becoming variable 10 knots or less after midnight. Slight chance of rain showers in the evening. Waves 1 to 2 feet. .SUNDAY...Southwest wind 5 to 10 knots. Slight chance of showers and thunderstorms in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ145-231600- Duluth MN to Port Wing WI- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind 15 to 20 knots. Rain showers likely early in the morning, then chance of rain showers late in the morning. Slight chance of rain showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TONIGHT...Northeast wind 5 to 10 knots in the evening becoming variable 10 knots or less, then becoming southwest 5 knots early in the morning. Slight chance of rain showers in the evening. Waves 1 to 2 feet. .SUNDAY...Southwest wind 5 to 10 knots. Slight chance of showers and thunderstorms in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ146-231600- Port Wing to Sand Island WI- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING... .TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the afternoon. Rain showers likely in the morning, then chance of rain showers early in the afternoon. Slight chance of rain showers late in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northeast wind 5 to 10 knots in the evening becoming variable 10 knots or less, then becoming southwest 5 knots early in the morning. Slight chance of rain showers in the evening. Waves 1 to 2 feet. .SUNDAY...Southwest wind 5 knots. Slight chance of showers and thunderstorms in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ147-231600- Sand Island to Bayfield WI- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING... .TODAY...East wind 5 to 10 knots. Rain showers likely in the morning, then chance of rain showers in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northeast wind 5 knots becoming north late in the evening, then becoming variable 10 knots or less after midnight becoming west 5 knots early in the morning. Slight chance of rain showers in the evening. Waves 1 to 2 feet. .SUNDAY...Southwest wind 5 knots becoming south in the afternoon. Slight chance of rain showers in the afternoon. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ150-231600- Outer Apostle Islands Beyond 5 NM from Mainland- 237 AM CDT Sat May 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CDT THIS MORNING... .TODAY...East wind 10 to 15 knots. Gusts up to 20 knots in the morning. Rain showers likely in the morning, then chance of rain showers in the afternoon. Waves 1 to 3 feet. .TONIGHT...Northeast wind 5 to 10 knots becoming west after midnight. Slight chance of rain showers in the evening. Waves 1 to 2 feet. .SUNDAY...Southwest wind 5 knots becoming south in the afternoon. Partly sunny. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ121-231600- Chequamegon Bay-Bayfield to Oak Point WI- 237 AM CDT Sat May 23 2026 .TODAY...East wind 5 to 10 knots. Rain showers likely in the morning, then chance of rain showers in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less, then becoming west 5 knots early in the morning. Slight chance of rain showers in the evening. Waves 1 foot or less. .SUNDAY...Southwest wind 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ LSZ148-231600- Oak Point to Saxon Harbor WI- 237 AM CDT Sat May 23 2026 .TODAY...East wind 5 to 10 knots. Chance of rain showers early in the morning, then rain showers likely late in the morning. Chance of rain showers in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northeast wind 5 knots becoming north late in the evening, then becoming variable 10 knots or less after midnight becoming southwest 5 knots early in the morning. Slight chance of rain showers in the evening. Waves 1 foot or less. .SUNDAY...Southwest wind 5 knots becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. .SUNDAY NIGHT...Southwest wind 5 knots. Partly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH