FZUS53 KDLH 120833 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 333 AM CDT Tue May 12 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. LSZ140-121600- Grand Portage to Grand Marais MN- 333 AM CDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING... .TODAY...East wind 10 to 15 knots with gusts to around 25 knots becoming northeast 15 to 20 knots late in the afternoon. Patchy fog until late afternoon. Rain showers early in the morning. Rain showers likely late in the morning, then chance of rain showers in the afternoon. Waves 3 to 5 feet. .TONIGHT...North wind 15 to 20 knots. Gusts up to 25 knots decreasing to 20 knots after midnight. Chance of rain showers in the evening. Waves 2 to 4 feet subsiding to 1 to 2 feet early in the morning. .WEDNESDAY...Northwest wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...North wind 5 to 10 knots becoming northeast early in the morning. Mostly clear. Waves 1 foot or less. $$ LSZ141-121600- Grand Marais to Taconite Harbor MN- 333 AM CDT Tue May 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH THIS EVENING... .TODAY...East wind 10 to 15 knots becoming north 5 to 10 knots late in the afternoon. Gusts up to 20 knots. Rain showers and slight chance of thunderstorms early in the morning, then chance of rain showers in the late morning and afternoon. Waves 2 to 4 feet. .TONIGHT...North wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Chance of rain showers in the evening. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. .WEDNESDAY...Northwest wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...North wind 5 knots early in the evening becoming variable 10 knots or less, then becoming north 5 knots after midnight becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ142-121600- Taconite Harbor to Silver Bay Harbor MN- 333 AM CDT Tue May 12 2026 .TODAY...Northeast wind 5 to 10 knots with gusts to around 20 knots becoming north late in the afternoon. Rain showers likely and slight chance of thunderstorms early in the morning, then chance of rain showers in the late morning and afternoon. Waves 1 to 3 feet. .TONIGHT...North wind 5 knots. Chance of rain showers in the evening. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 knots. Sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...North wind 5 knots early in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ143-121600- Silver Bay Harbor to Two Harbors MN- 333 AM CDT Tue May 12 2026 .TODAY...Northeast wind 5 to 10 knots becoming north late in the afternoon. Slight chance of thunderstorms early in the morning. Chance of rain showers through the day. Waves 1 to 2 feet. .TONIGHT...Northwest wind 5 knots. Chance of rain showers in the evening. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 knots becoming west late in the afternoon. Sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...Variable winds 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ144-121600- Two Harbors to Duluth MN- 333 AM CDT Tue May 12 2026 .TODAY...Northeast wind 5 to 10 knots becoming northwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Chance of rain showers and slight chance of thunderstorms early in the morning, then slight chance of rain showers late in the morning. Chance of rain showers in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the evening. Chance of rain showers in the evening. Waves 1 foot or less. .WEDNESDAY...Northwest wind 5 to 10 knots becoming northeast late in the afternoon. Sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...Northeast wind 5 knots. Mostly clear. Waves 1 foot or less. $$ LSZ145-121600- Duluth MN to Port Wing WI- 333 AM CDT Tue May 12 2026 .TODAY...East wind 5 to 10 knots becoming northwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Chance of rain showers and slight chance of thunderstorms early in the morning, then slight chance of rain showers late in the morning. Chance of rain showers in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the evening. Chance of rain showers in the evening. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 to 10 knots becoming northeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots. Mostly clear. Waves 1 foot or less. $$ LSZ146-121600- Port Wing to Sand Island WI- 333 AM CDT Tue May 12 2026 .TODAY...East wind 5 to 10 knots becoming north in the afternoon. Chance of rain showers and slight chance of thunderstorms early in the morning, then slight chance of rain showers late in the morning. Chance of rain showers in the afternoon. Waves 1 foot or less. .TONIGHT...Northwest wind 5 to 10 knots. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 foot or less. .WEDNESDAY...West wind 5 knots. Mostly sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...East wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. $$ LSZ147-121600- Sand Island to Bayfield WI- 333 AM CDT Tue May 12 2026 .TODAY...Southeast wind 5 to 10 knots becoming north in the afternoon. Rain showers likely and slight chance of thunderstorms early in the morning, then chance of rain showers in the late morning and early afternoon. Rain showers likely late in the afternoon. Waves 1 foot or less. .TONIGHT...Northwest wind 5 to 10 knots. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 foot or less. .WEDNESDAY...Northwest wind 5 knots. Sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...Southeast wind 5 knots early in the evening becoming variable 10 knots or less, then becoming southeast 5 knots early in the morning. Mostly clear. Waves 1 foot or less. $$ LSZ150-121600- Outer Apostle Islands Beyond 5 NM from Mainland- 333 AM CDT Tue May 12 2026 .TODAY...Southeast wind 10 to 15 knots with gusts to around 20 knots becoming north with gusts to around 20 knots late in the afternoon. Rain showers likely and slight chance of thunderstorms early in the morning, then chance of rain showers in the late morning and afternoon. Waves 1 to 3 feet. .TONIGHT...North wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 to 10 knots early in the morning. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 to 2 feet. .WEDNESDAY...West wind 5 to 10 knots. Sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest wind 5 knots becoming southeast in the late evening and overnight. Mostly clear. Waves 1 foot or less. $$ LSZ121-121600- Chequamegon Bay-Bayfield to Oak Point WI- 333 AM CDT Tue May 12 2026 .TODAY...South wind 5 to 10 knots becoming northwest in the afternoon. Gusts up to 20 knots. Slight chance of thunderstorms early in the morning. Chance of rain showers through the day. Waves 1 foot or less. .TONIGHT...Northwest wind 5 to 10 knots. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 foot or less. .WEDNESDAY...Northwest wind 5 to 10 knots becoming north in the afternoon. Mostly sunny. Waves 1 foot or less. .WEDNESDAY NIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less, then becoming south 5 knots early in the morning. Mostly clear. Waves 1 foot or less. $$ LSZ148-121600- Oak Point to Saxon Harbor WI- 333 AM CDT Tue May 12 2026 .TODAY...Southeast wind 10 to 15 knots with gusts to around 25 knots becoming northwest 5 to 10 knots with gusts to around 20 knots in the afternoon. Rain showers likely and slight chance of thunderstorms early in the morning, then chance of rain showers in the late morning and early afternoon. Rain showers likely late in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northwest wind 5 to 10 knots easing to 5 knots early in the morning. Chance of rain showers in the evening, then slight chance of rain showers after midnight. Waves 1 to 2 feet. .WEDNESDAY...Northwest wind 5 to 10 knots becoming north in the afternoon. Mostly sunny. Waves 1 to 2 feet. .WEDNESDAY NIGHT...East wind 5 knots becoming southeast 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