FZUS53 KDLH 301005 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 505 AM CDT Thu Apr 30 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. LSZ140-301600- Grand Portage to Grand Marais MN- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots becoming southeast early in the afternoon, then becoming southwest late in the afternoon. Chance of snow showers until late afternoon, then snow showers likely late in the afternoon. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north in the late evening and overnight. Chance of snow showers in the evening, then slight chance of snow showers after midnight. Waves 1 foot or less. .FRIDAY...North wind 5 to 10 knots becoming southeast early in the afternoon, then becoming southwest late in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 to 10 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. $$ LSZ141-301600- Grand Marais to Taconite Harbor MN- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots becoming south early in the afternoon, then becoming southwest late in the afternoon. Chance of snow showers until late afternoon, then snow showers likely and chance of rain showers late in the afternoon. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north in the late evening and overnight. Chance of rain showers and snow showers in the evening, then slight chance of snow showers after midnight. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 knots becoming west late in the evening, then becoming variable 10 knots or less after midnight. Mostly clear. Waves 1 foot or less. $$ LSZ142-301600- Taconite Harbor to Silver Bay Harbor MN- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots becoming south early in the afternoon, then becoming southwest late in the afternoon. Chance of snow showers early in the morning, then slight chance of snow showers late in the morning. Chance of rain showers and snow showers in the afternoon. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north in the late evening and overnight. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming southeast in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...South wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ143-301600- Silver Bay Harbor to Two Harbors MN- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots becoming south in the afternoon. Slight chance of snow showers in the morning. Chance of rain showers through the day. Chance of snow showers in the afternoon. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north in the late evening and overnight. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming southeast in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Variable winds 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ144-301600- Two Harbors to Duluth MN- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots becoming east late in the afternoon. Chance of sprinkles and flurries in the morning, then slight chance of rain showers and snow showers in the afternoon. Waves 1 foot or less. .TONIGHT...North wind 5 knots. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming northeast in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ145-301600- Duluth MN to Port Wing WI- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots. Chance of flurries early in the morning. Chance of sprinkles in the morning, then slight chance of rain showers and snow showers in the afternoon. Waves 1 foot or less. .TONIGHT...North wind 5 knots. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming northeast in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ146-301600- Port Wing to Sand Island WI- 505 AM CDT Thu Apr 30 2026 .TODAY...Northwest wind 5 knots becoming west late in the afternoon. Slight chance of snow showers through the day. Slight chance of rain showers in the late morning and afternoon. Waves 1 foot or less. .TONIGHT...Northwest wind 5 knots becoming north after midnight. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Variable winds 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ147-301600- Sand Island to Bayfield WI- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 to 10 knots becoming northwest late in the afternoon. Chance of rain showers and snow showers. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north early in the morning. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ150-301600- Outer Apostle Islands Beyond 5 NM from Mainland- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 to 10 knots becoming west late in the afternoon. Chance of rain showers until late afternoon. Chance of snow showers in the late morning and early afternoon, then slight chance of rain showers and snow showers late in the afternoon. Waves 1 foot or less. .TONIGHT...Northwest wind 5 knots becoming north after midnight. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 to 10 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...South wind 5 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. $$ LSZ121-301600- Chequamegon Bay-Bayfield to Oak Point WI- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 knots becoming northeast in the afternoon. Slight chance of rain showers and snow showers early in the morning, then chance of rain showers and snow showers in the late morning and early afternoon. Slight chance of rain showers and snow showers late in the afternoon. Waves 1 foot or less. .TONIGHT...North wind 5 knots. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming northeast in the afternoon. Partly sunny in the morning then clearing. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ148-301600- Oak Point to Saxon Harbor WI- 505 AM CDT Thu Apr 30 2026 .TODAY...North wind 5 to 10 knots becoming northeast late in the afternoon. Chance of rain showers and snow showers. Waves 1 foot or less. .TONIGHT...North wind 5 knots. Slight chance of rain showers and snow showers in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming east late in the afternoon. Partly sunny in the morning then clearing. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less, then becoming southwest 5 knots after midnight. Mostly clear. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH