FZUS53 KDLH 130718 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 218 AM CDT Fri Mar 13 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. LSZ140-131600- Grand Portage to Grand Marais MN- 218 AM CDT Fri Mar 13 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind up to 30 knots with gales to around 40 knots becoming north 15 to 20 knots with gales to around 35 knots in the afternoon. Patchy blowing snow early in the morning. Freezing spray in the morning. Snow early in the morning. Chance of snow late in the morning, then slight chance of snow early in the afternoon. Waves 9 to 14 feet subsiding to 4 to 6 feet. Waves occasionally to 18 feet. .TONIGHT...North wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. A small craft advisory may be needed. .SATURDAY...Northwest wind 5 knots becoming southwest in the late morning and afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...South wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots after midnight. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-131600- Grand Marais to Taconite Harbor MN- 218 AM CDT Fri Mar 13 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind up to 30 knots with gales to around 45 knots becoming north 10 to 15 knots with gusts to around 25 knots in the afternoon. Blowing snow early in the morning. Snow early in the morning, then snow likely late in the morning. Chance of snow early in the afternoon. Waves 10 to 15 feet subsiding to 5 to 8 feet. Waves occasionally to 19 feet. .TONIGHT...North wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. A small craft advisory may be needed. .SATURDAY...Northwest wind 5 knots becoming southwest in the late morning and early afternoon, then becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. .SATURDAY NIGHT...Southeast wind 5 knots becoming northeast in the late evening and early morning, then rising to 10 to 15 knots with gusts to around 25 knots early in the morning. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-131600- Taconite Harbor to Silver Bay Harbor MN- 218 AM CDT Fri Mar 13 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind up to 30 knots with gales to around 40 knots becoming north 15 to 20 knots with gales to around 35 knots in the late morning and afternoon. Blowing snow early in the morning. Snow early in the morning, then snow likely late in the morning. Chance of snow early in the afternoon. Waves 10 to 15 feet subsiding to 6 to 9 feet. Waves occasionally to 20 feet. .TONIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. 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. .SATURDAY...Variable winds 10 knots or less becoming southwest 5 knots in the late morning and early afternoon, then becoming south late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...Southeast wind 5 knots becoming northeast in the late evening and early morning, then rising to 10 to 15 knots with gusts to around 20 knots early in the morning. Slight chance of snow after midnight. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-131600- Silver Bay Harbor to Two Harbors MN- 218 AM CDT Fri Mar 13 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind up to 30 knots with gales to around 40 knots becoming northwest 10 to 15 knots with gusts to around 25 knots in the afternoon. Freezing spray in the morning. Snow early in the morning. Chance of snow late in the morning, then slight chance of snow early in the afternoon. Waves 10 to 15 feet subsiding to 6 to 9 feet. Waves occasionally to 19 feet. .TONIGHT...Northwest wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .SATURDAY...Northwest wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...East wind 5 to 10 knots becoming northeast 15 to 20 knots with gusts to around 25 knots early in the morning. Chance of snow after midnight. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-131600- Two Harbors to Duluth MN- 218 AM CDT Fri Mar 13 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind up to 30 knots with gales to around 40 knots becoming northwest 15 to 20 knots with gusts to around 30 knots in the afternoon. Freezing spray in the morning. Snow early in the morning. Chance of snow late in the morning, then slight chance of snow early in the afternoon. Waves 7 to 12 feet subsiding to 5 to 8 feet in the afternoon. Waves occasionally to 16 feet. .TONIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. A small craft advisory may be needed. .SATURDAY...West wind 5 knots becoming southwest in the late morning and early afternoon, then becoming southeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...East wind 5 to 10 knots becoming northeast 15 to 20 knots with gusts to around 25 knots early in the morning. Slight chance of snow through the night. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ145-131600- Duluth MN to Port Wing WI- 218 AM CDT Fri Mar 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...North wind up to 30 knots with gales to around 40 knots becoming northwest 15 to 20 knots with gusts to around 30 knots in the afternoon. Snow early in the morning, then chance of snow late in the morning. Slight chance of snow early in the afternoon. Waves 7 to 12 feet subsiding to 3 to 5 feet. Waves occasionally to 15 feet. .TONIGHT...Northwest wind 10 to 15 knots easing to 5 knots after midnight, then becoming west early in the morning. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SATURDAY...Southwest wind 5 knots becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .SATURDAY NIGHT...East wind 5 to 10 knots becoming northeast 15 to 20 knots with gusts to around 25 knots early in the morning. Slight chance of snow in the evening, then chance of snow after midnight. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-131600- Port Wing to Sand Island WI- 218 AM CDT Fri Mar 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...North wind up to 30 knots with gales to around 40 knots easing to 15 to 20 knots with gusts to around 25 knots in the afternoon. Snow in the morning, then slight chance of snow in the afternoon. Waves 7 to 12 feet subsiding to 4 to 6 feet. Waves occasionally to 16 feet. .TONIGHT...Northwest wind 10 to 15 knots easing to 5 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .SATURDAY...Southwest wind 5 knots becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. .SATURDAY NIGHT...East wind 5 to 10 knots becoming northeast 15 to 20 knots with gusts to around 25 knots early in the morning. Slight chance of snow in the evening, then chance of snow after midnight. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-131600- Sand Island to Bayfield WI- 218 AM CDT Fri Mar 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Northeast wind up to 30 knots with gales to around 35 knots becoming north 15 to 20 knots with gusts to around 30 knots in the afternoon. Snow in the morning, then chance of snow early in the afternoon. Slight chance of snow late in the afternoon. Waves 7 to 12 feet subsiding to 4 to 6 feet. Waves occasionally to 16 feet. .TONIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .SATURDAY...Southwest wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .SATURDAY NIGHT...East wind 5 knots becoming northeast 10 to 15 knots with gusts to around 20 knots early in the morning. Chance of snow after midnight. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-131600- Outer Apostle Islands Beyond 5 NM from Mainland- 218 AM CDT Fri Mar 13 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northeast wind up to 30 knots with gales to around 40 knots becoming north 20 to 25 knots with gusts to around 30 knots early in the afternoon, then becoming northwest 10 to 15 knots with gusts to around 25 knots late in the afternoon. Snow in the morning, then chance of snow early in the afternoon. Slight chance of snow late in the afternoon. Waves 10 to 15 feet subsiding to 6 to 9 feet. Waves occasionally to 19 feet. .TONIGHT...North wind 10 to 15 knots with gusts to around 20 knots becoming northwest 5 knots early in the morning. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .SATURDAY...Southwest wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...East wind 10 to 15 knots with gusts to around 25 knots. Chance of snow after midnight. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-131600- Oak Point to Saxon Harbor WI- 218 AM CDT Fri Mar 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .TODAY...Northeast wind 20 to 25 knots with gales to around 35 knots becoming north with gusts to around 30 knots early in the afternoon, then becoming northwest 10 to 15 knots with gusts to around 25 knots late in the afternoon. Snow in the morning, then snow likely early in the afternoon. Chance of snow late in the afternoon. Waves 7 to 12 feet subsiding to 5 to 8 feet late in the afternoon. Waves occasionally to 16 feet. .TONIGHT...Northwest wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the morning. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet. .SATURDAY...Southwest wind 5 knots becoming east late in the afternoon. Mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...East wind 10 to 15 knots with gusts to around 20 knots. Slight chance of snow in the evening, then chance of snow after midnight. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH