FZUS53 KDLH 121328 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 827 AM CDT Thu Mar 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. LSZ140-122200- Grand Portage to Grand Marais MN- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH FRIDAY MORNING... .REST OF TODAY...Northwest wind 5 to 10 knots becoming northeast late in the morning, then becoming southeast 10 to 15 knots with gusts to around 20 knots in the afternoon. Sunny early in the morning then becoming partly sunny. Waves 1 to 2 feet. .TONIGHT...East wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots in the late evening and overnight. Freezing spray and blowing snow. Snow. Waves 4 to 6 feet building to 9 to 14 feet. Waves occasionally to 18 feet. .FRIDAY...North wind 20 to 25 knots with gales to around 35 knots easing to 10 to 15 knots with gusts to around 25 knots late in the afternoon. Freezing spray through the day. Chance of snow through the day. Waves 8 to 13 feet subsiding to 4 to 7 feet. Waves occasionally to 17 feet. .FRIDAY NIGHT...North wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 knots early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ141-122200- Grand Marais to Taconite Harbor MN- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH FRIDAY MORNING... .REST OF TODAY...West wind 5 knots becoming south late in the morning, then becoming southeast early in the afternoon becoming east 15 to 20 knots with gusts to around 25 knots late. Chance of snow late. Waves 1 to 2 feet. .TONIGHT...East wind up to 30 knots with gales to around 45 knots becoming northeast with gales to around 40 knots early in the morning. Blowing snow in the evening. Areas of blowing snow after midnight. Snow through the night. Waves 4 to 6 feet building to 8 to 13 feet. Waves occasionally to 17 feet. .FRIDAY...North wind 20 to 25 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots in the afternoon. Freezing spray in the morning. Chance of snow through the day. Waves 7 to 12 feet subsiding to 4 to 7 feet. Waves occasionally to 16 feet. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ142-122200- Taconite Harbor to Silver Bay Harbor MN- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING... ...GALE WARNING IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH FRIDAY MORNING... .REST OF TODAY...North wind 5 knots becoming southeast in the late morning and early afternoon, then becoming east 15 to 20 knots with gusts to around 25 knots late. Chance of snow late. Waves 1 to 2 feet. .TONIGHT...East wind up to 30 knots with gales to around 40 knots becoming northeast with gales to around 40 knots early in the morning. Blowing snow in the evening. Patchy blowing snow after midnight. Snow through the night. Waves 4 to 6 feet building to 7 to 12 feet. Waves occasionally to 16 feet. .FRIDAY...North wind 20 to 25 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots in the afternoon. Freezing spray in the morning. Chance of snow through the day. Waves 7 to 12 feet subsiding to 4 to 7 feet. Waves occasionally to 15 feet. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ143-122200- Silver Bay Harbor to Two Harbors MN- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH THIS EVENING... ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY MORNING... .REST OF TODAY...North wind 5 knots becoming east in the late morning and early afternoon, then rising to 15 to 20 knots with gusts to around 25 knots late. Chance of snow late. Waves 1 to 3 feet. .TONIGHT...East wind 20 to 25 knots with gales to around 35 knots becoming northeast up to 30 knots with gales to around 40 knots after midnight. Blowing snow in the evening. Freezing spray and patchy blowing snow after midnight. Snow through the night. Waves 3 to 5 feet building to 8 to 11 feet. Waves occasionally to 15 feet. .FRIDAY...North wind 20 to 25 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots in the afternoon. Freezing spray in the morning. Chance of snow through the day. Waves 8 to 11 feet subsiding to 5 to 8 feet in the afternoon. Waves occasionally to 15 feet. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ144-122200- Two Harbors to Duluth MN- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH THIS EVENING... ...GALE WARNING IN EFFECT FROM THIS EVENING THROUGH FRIDAY MORNING... .REST OF TODAY...Northwest wind 5 knots becoming southeast late in the morning, then becoming east early in the afternoon rising to 15 to 20 knots with gusts to around 25 knots late. Chance of snow late. Waves 1 to 3 feet. .TONIGHT...East wind 20 to 25 knots with gusts to around 30 knots becoming northeast up to 30 knots with gales to around 35 knots after midnight. Areas of blowing snow in the evening, then patchy blowing snow after midnight. Snow and slight chance of rain in the evening, then snow likely after midnight. Waves 7 to 10 feet. Waves occasionally to 12 feet. .FRIDAY...Northwest wind 20 to 25 knots with gales to around 35 knots easing to 10 to 15 knots with gusts to around 20 knots late in the afternoon. Freezing spray in the morning. Chance of snow through the day. Waves 6 to 9 feet subsiding to 4 to 7 feet in the afternoon. Waves occasionally to 12 feet. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ145-122200- Duluth MN to Port Wing WI- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH FRIDAY EVENING... .REST OF TODAY...West wind 5 knots becoming southeast in the late morning and early afternoon, then rising to 15 to 20 knots with gusts to around 25 knots late. Chance of snow late. Waves 1 to 2 feet. .TONIGHT...Southeast wind 20 to 25 knots with gusts to around 30 knots becoming north with gales to around 35 knots after midnight. Snow and slight chance of rain in the evening, then snow likely after midnight. Waves 3 to 5 feet building to 7 to 10 feet. Waves occasionally to 13 feet. A gale warning may be needed. .FRIDAY...Northwest wind 20 to 25 knots with gales to around 35 knots easing to 10 to 15 knots with gusts to around 20 knots late in the afternoon. Freezing spray in the morning. Chance of snow through the day. Waves 7 to 10 feet subsiding to 4 to 7 feet in the afternoon. Waves occasionally to 14 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. Note...Wave height forecasts are for ice free areas. $$ LSZ146-122200- Port Wing to Sand Island WI- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH FRIDAY EVENING... .REST OF TODAY...Northeast wind 5 knots becoming southeast in the late morning and early afternoon, then becoming east 15 to 20 knots with gusts to around 25 knots late. Slight chance of snow late. Waves 1 to 2 feet. .TONIGHT...Southeast wind 20 to 25 knots with gusts to around 30 knots becoming northeast up to 30 knots with gales to around 40 knots early in the morning. Snow and slight chance of rain. Waves 4 to 7 feet building to 7 to 10 feet early in the morning. Waves occasionally to 13 feet. A gale warning may be needed. .FRIDAY...North wind up to 30 knots with gales to around 35 knots becoming northwest 5 to 15 knots with gusts to around 20 knots. Freezing spray in the morning. Chance of snow through the day. Waves 8 to 11 feet subsiding to 5 to 8 feet in the afternoon. Waves occasionally to 15 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. Waves occasionally to 7 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-122200- Sand Island to Bayfield WI- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH FRIDAY EVENING... .REST OF TODAY...North wind 5 knots becoming southeast in the late morning and early afternoon, then becoming east 15 to 20 knots with gusts to around 25 knots late. Chance of snow late. Waves 1 to 2 feet. .TONIGHT...Southeast wind up to 30 knots with gales to around 35 knots becoming northeast with gales to around 40 knots early in the morning. Snow through the night. Slight chance of rain after midnight. Waves 4 to 6 feet building to 6 to 9 feet early in the morning. Waves occasionally to 12 feet. A gale warning may be needed. .FRIDAY...North wind up to 30 knots with gales to around 40 knots becoming northwest 15 to 20 knots with gusts to around 25 knots in the afternoon. Chance of snow through the day. Waves 8 to 11 feet subsiding to 6 to 9 feet in the afternoon. Waves occasionally to 14 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet after midnight. Waves occasionally to 7 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-122200- Outer Apostle Islands Beyond 5 NM from Mainland- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH LATE TONIGHT... ...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY MORNING... .REST OF TODAY...Northwest wind 5 knots becoming southwest late in the morning, then becoming southeast early in the afternoon becoming east 15 to 20 knots with gusts to around 25 knots late. Slight chance of snow late. Waves 1 to 2 feet. .TONIGHT...Southeast wind up to 30 knots with gales to around 40 knots becoming northeast with gales to around 40 knots early in the morning. Snow. Waves 2 to 4 feet building to 7 to 12 feet. Waves occasionally to 15 feet. .FRIDAY...North wind up to 30 knots with gales to around 40 knots becoming northwest 20 to 25 knots with gusts to around 30 knots in the afternoon. Freezing spray in the morning. Chance of snow through the day. Waves 8 to 13 feet subsiding to 7 to 10 feet late in the afternoon. Waves occasionally to 17 feet. .FRIDAY NIGHT...Northwest wind 10 to 15 knots. Gusts up to 20 knots in the evening. Mostly cloudy. Waves 4 to 7 feet subsiding to 1 to 2 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ148-122200- Oak Point to Saxon Harbor WI- 827 AM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH FRIDAY EVENING... .REST OF TODAY...Southwest wind 5 knots becoming south late in the morning, then becoming southeast 10 to 15 knots with gusts to around 20 knots in the afternoon. Chance of snow late. Waves 1 to 2 feet. .TONIGHT...Southeast wind 20 to 25 knots with gales to around 35 knots becoming south 15 to 20 knots with gusts to around 30 knots after midnight, then becoming northwest 20 to 25 knots with gales to around 35 knots early in the morning. Snow through the night. Slight chance of rain after midnight. Waves 4 to 7 feet. Waves occasionally to 9 feet. A gale warning may be needed. .FRIDAY...North wind 20 to 25 knots with gales to around 35 knots becoming northwest 15 to 20 knots with gusts to around 25 knots late in the afternoon. Freezing spray in the morning. Snow likely in the morning, then chance of snow in the afternoon. Waves 7 to 10 feet subsiding to 5 to 8 feet late in the afternoon. Waves occasionally to 14 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Mostly cloudy. Waves 4 to 6 feet subsiding to 1 to 2 feet. Waves occasionally to 8 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH