FZUS53 KDLH 301718 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1218 PM 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. LSZ140-302200- Grand Portage to Grand Marais MN- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...South wind 5 knots becoming southwest late. Chance of snow. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north after midnight. Chance of snow and rain in the evening, then slight chance of rain and snow 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. Partly cloudy. Waves 1 foot or less. $$ LSZ141-302200- Grand Marais to Taconite Harbor MN- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...Southwest wind 5 knots. Chance of rain and snow. Waves 1 foot or less. .TONIGHT...West wind 5 knots becoming north in the late evening and overnight. Chance of rain and snow in the evening, then chance of flurries and slight chance of rain after midnight. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming east late in the morning, then becoming south in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less. Partly cloudy. Waves 1 foot or less. $$ LSZ142-302200- Taconite Harbor to Silver Bay Harbor MN- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...South wind 5 knots. Chance of rain and snow. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less becoming north 5 knots after midnight. Chance of flurries and slight chance of rain in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming south late 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. $$ LSZ143-302200- Silver Bay Harbor to Two Harbors MN- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...South wind 5 knots early in the afternoon becoming variable 10 knots or less. Chance of rain and snow. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less becoming north 5 knots after midnight. Chance of sprinkles and flurries in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming southeast in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Variable winds 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ144-302200- Two Harbors to Duluth MN- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...Southeast wind 5 knots. Chance of snow early in the afternoon. Chance of rain through the day. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots becoming north in the late evening and overnight. Chance of sprinkles and flurries in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming east in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ145-302200- Duluth MN to Port Wing WI- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...Northeast wind 5 knots. Chance of rain early in the afternoon. Chance of snow through the day. Slight chance of rain late. Waves 1 foot or less. .TONIGHT...North wind 5 knots. Chance of sprinkles and flurries in the evening. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming northeast in the afternoon. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ146-302200- Port Wing to Sand Island WI- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...North wind 5 knots early in the afternoon becoming variable 10 knots or less. Chance of snow early in the afternoon. Chance of rain through the day. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less becoming north 5 knots after midnight. Chance of sprinkles and flurries 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. $$ LSZ147-302200- Sand Island to Bayfield WI- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...North wind 5 knots. Chance of rain and snow. Waves 1 foot or less. .TONIGHT...Variable winds 10 knots or less becoming north 5 knots after midnight. Chance of sprinkles and flurries in the evening. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming southeast late in the afternoon. Partly sunny in the morning then clearing. Waves 1 foot or less. .FRIDAY NIGHT...Southeast wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ150-302200- Outer Apostle Islands Beyond 5 NM from Mainland- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...Northeast wind 5 knots becoming south late. Chance of rain and snow. Waves 1 foot or less. .TONIGHT...Northwest wind 5 knots becoming north after midnight. Chance of rain in the evening. Chance of flurries through the night. Chance of sprinkles after midnight. Waves 1 foot or less. .FRIDAY...Northeast wind 5 knots becoming southeast late in the afternoon. Partly sunny in the morning then clearing. Waves 1 foot or less. .FRIDAY NIGHT...South wind 5 knots becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. $$ LSZ121-302200- Chequamegon Bay-Bayfield to Oak Point WI- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...Northeast wind 5 knots. Chance of rain and snow. Waves 1 foot or less. .TONIGHT...North wind 5 knots early in the evening becoming variable 10 knots or less, then becoming north 5 knots after midnight. Chance of rain in the evening. Chance of flurries through the night. Waves 1 foot or less. .FRIDAY...North wind 5 knots becoming northeast in the afternoon. Partly sunny in the morning then clearing. Waves 1 foot or less. .FRIDAY NIGHT...East wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ148-302200- Oak Point to Saxon Harbor WI- 1218 PM CDT Thu Apr 30 2026 .REST OF TODAY...North wind 5 knots becoming northeast late. Chance of snow and rain. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots becoming north in the late evening and overnight. Slight chance of rain in the evening. Chance of flurries through the night. 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...Southeast 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