FZUS53 KDLH 150623 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 123 AM CDT Fri May 15 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. LSZ140-151600- Grand Portage to Grand Marais MN- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TODAY...Southwest wind 20 to 25 knots. Gusts up to 30 knots early in the morning then 30 knots late in the afternoon. Mostly sunny. Waves 4 to 7 feet. Waves occasionally to 9 feet. .TONIGHT...Southwest wind 20 to 25 knots with gusts to around 30 knots becoming west 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Mostly clear. Waves 4 to 6 feet subsiding to 2 to 4 feet after midnight. Waves occasionally to 8 feet. .SATURDAY...West wind 10 to 15 knots. Gusts up to 20 knots increasing to 25 knots in the late morning and early afternoon, then decreasing to 20 knots late in the afternoon. Sunny. Waves 1 to 3 feet. .SATURDAY NIGHT...Northwest wind 5 to 10 knots becoming northeast in the late evening and overnight. Mostly clear. Waves 1 to 2 feet. $$ LSZ141-151600- Grand Marais to Taconite Harbor MN- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots with gusts to around 25 knots becoming southwest 15 to 20 knots with gusts to around 30 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet building to 3 to 5 feet in the afternoon. .TONIGHT...West wind 10 to 15 knots with gusts to around 25 knots easing to 5 to 10 knots early in the morning. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SATURDAY...West wind 10 to 15 knots with gusts to around 20 knots. Sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Northwest wind 5 knots becoming northeast after midnight. Mostly clear. Waves 1 foot or less. $$ LSZ142-151600- Taconite Harbor to Silver Bay Harbor MN- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots with gusts to around 30 knots. Sunny. Waves 1 to 2 feet building to 1 to 3 feet in the afternoon. .TONIGHT...Southwest wind 10 to 15 knots with gusts to around 25 knots becoming west 5 knots after midnight. Mostly clear. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 knots becoming northeast with gusts to around 20 knots early in the morning. Mostly clear. Waves 1 foot or less. $$ LSZ143-151600- Silver Bay Harbor to Two Harbors MN- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 10 to 15 knots. Gusts up to 20 knots increasing to 30 knots. Sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...West wind 10 to 15 knots with gusts to around 25 knots easing to 5 knots early in the morning. Mostly clear. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots early in the afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 knots becoming northeast 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Partly cloudy. Waves 1 foot or less. $$ LSZ144-151600- Two Harbors to Duluth MN- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 30 knots in the afternoon. Sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...West wind 10 to 15 knots. Gusts up to 25 knots early in the evening. Mostly clear. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 to 10 knots becoming northeast in the late evening and early morning, then rising to 15 to 20 knots with gusts to around 25 knots early in the morning. Partly cloudy. Waves 1 to 2 feet. $$ LSZ145-151600- Duluth MN to Port Wing WI- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots late in the morning, then increasing to 30 knots in the afternoon. Sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. .TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late evening and overnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...Northwest wind 5 knots becoming northeast late in the evening, then rising to 15 to 20 knots with gusts to around 25 knots after midnight. Partly cloudy. Waves 1 to 3 feet. $$ LSZ146-151600- Port Wing to Sand Island WI- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots with gusts to around 25 knots easing to 5 to 15 knots with gusts to around 25 knots late in the afternoon. Sunny. Waves 1 to 2 feet building to 2 to 4 feet in the afternoon. .TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 30 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the late morning and early afternoon. Sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...West wind 5 knots becoming northeast 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Partly cloudy. Waves 1 foot or less. $$ LSZ147-151600- Sand Island to Bayfield WI- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 10 to 15 knots. Gusts up to 25 knots decreasing to 20 knots late in the morning, then increasing to 25 knots early in the afternoon increasing to 30 knots late in the afternoon. Sunny. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 30 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the late morning and afternoon. Sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...West wind 5 knots becoming east in the late evening and overnight. Partly cloudy. Waves 1 foot or less. $$ LSZ150-151600- Outer Apostle Islands Beyond 5 NM from Mainland- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots early in the morning then 25 knots early in the afternoon, then increasing to 30 knots late in the afternoon. Sunny. Waves 2 to 4 feet. .TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 30 knots. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots until late afternoon. Sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Southwest wind 5 knots becoming east 10 to 15 knots with gusts to around 20 knots in the late evening and overnight. Partly cloudy. Waves 1 to 2 feet. $$ LSZ121-151600- Chequamegon Bay-Bayfield to Oak Point WI- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots late in the morning, then increasing to 30 knots early in the afternoon decreasing to 25 knots late in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots early in the evening. Mostly clear. Waves 1 to 2 feet. .SATURDAY...West wind 5 to 10 knots. Gusts up to 20 knots in the afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...North wind 5 knots becoming northeast in the late evening and overnight. Partly cloudy. Waves 1 foot or less. $$ LSZ148-151600- Oak Point to Saxon Harbor WI- 123 AM CDT Fri May 15 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Southwest wind 15 to 20 knots. Gusts up to 30 knots decreasing to 25 knots in the late morning and afternoon. Sunny. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TONIGHT...Southwest wind 10 to 15 knots. Gusts up to 25 knots. Mostly clear. Waves 1 to 2 feet. .SATURDAY...West wind 5 to 10 knots with gusts to around 20 knots becoming northwest late in the afternoon. Sunny. Waves 1 foot or less. .SATURDAY NIGHT...Northeast wind 5 knots rising to 5 to 10 knots in the late evening and overnight. Partly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH