FZUS53 KDLH 130355 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1055 PM 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. LSZ140-131000- Grand Portage to Grand Marais MN- 1055 PM CDT Thu Mar 12 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT FRIDAY... .REST OF TONIGHT...East wind up to 30 knots. Gales up to 40 knots increasing to 45 knots after midnight. Freezing spray through the night. Blowing snow after midnight. Chance of snow late in the evening. Snow after midnight. Waves 7 to 10 feet building to 10 to 15 feet after midnight. Waves occasionally to 19 feet. .FRIDAY...Northeast wind up to 30 knots with gales to around 40 knots becoming north 15 to 20 knots with gusts to around 30 knots in the afternoon. Freezing spray and blowing snow in the morning. Snow likely in the morning. Waves 9 to 14 feet subsiding to 4 to 6 feet. Waves occasionally to 18 feet. .FRIDAY NIGHT...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. Note...Wave height forecasts are for ice free areas. $$ LSZ141-131000- Grand Marais to Taconite Harbor MN- 1055 PM CDT Thu Mar 12 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT FRIDAY... .REST OF TONIGHT...East wind up to 30 knots. Gales up to 40 knots increasing to 45 knots after midnight. Freezing spray and blowing snow. Snow. Waves 8 to 11 feet building to 11 to 16 feet after midnight. Waves occasionally to 20 feet. .FRIDAY...Northeast wind up to 30 knots with gales to around 35 knots becoming north 10 to 15 knots with gusts to around 20 knots in the afternoon. Blowing snow in the morning. Snow in the morning, then slight chance of snow in the afternoon. Waves 10 to 15 feet subsiding to 5 to 8 feet. Waves occasionally to 19 feet. .FRIDAY NIGHT...North wind 5 to 10 knots. Gusts up to 20 knots early in the evening. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. A small craft advisory may be needed. .SATURDAY...Northwest wind 5 knots becoming southwest in the late morning and early afternoon, then becoming south late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-131000- Taconite Harbor to Silver Bay Harbor MN- 1055 PM CDT Thu Mar 12 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT FRIDAY... .REST OF TONIGHT...East wind up to 30 knots. Gales up to 40 knots increasing to 45 knots after midnight, then decreasing to 40 knots toward daybreak. Freezing spray and blowing snow. Snow. Waves 8 to 11 feet building to 11 to 16 feet after midnight. Waves occasionally to 20 feet. .FRIDAY...North wind 20 to 25 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Snow in the morning, then slight chance of snow in the afternoon. Waves 10 to 15 feet subsiding to 6 to 9 feet. Waves occasionally to 20 feet. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. 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...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. Note...Wave height forecasts are for ice free areas. $$ LSZ143-131000- Silver Bay Harbor to Two Harbors MN- 1055 PM CDT Thu Mar 12 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT FRIDAY... .REST OF TONIGHT...East wind up to 30 knots rising to gales to 35 knots after midnight. Gales up to 40 knots. Blowing snow in the late evening and early morning. Freezing spray through the night. Snow through the night. Waves 7 to 10 feet building to 10 to 15 feet after midnight. Waves occasionally to 20 feet. .FRIDAY...North wind up to 30 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 20 knots in the afternoon. Freezing spray in the morning. Snow in the morning, then slight chance of snow in the afternoon. Waves 10 to 15 feet subsiding to 4 to 7 feet. Waves occasionally to 19 feet. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .SATURDAY...Northwest wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-131000- Two Harbors to Duluth MN- 1055 PM CDT Thu Mar 12 2026 ...GALE WARNING IN EFFECT UNTIL 10 AM CDT FRIDAY... .REST OF TONIGHT...East wind up to 30 knots becoming northeast gales to 35 knots after midnight. Gales up to 40 knots. Blowing snow in the late evening and early morning. Freezing spray through the night. Snow in the late evening and early morning. Snow likely toward daybreak. Waves 5 to 8 feet building to 7 to 12 feet after midnight. Waves occasionally to 16 feet. .FRIDAY...North wind up to 30 knots with gales to around 35 knots becoming northwest 15 to 20 knots in the afternoon. Freezing spray in the morning. Chance of snow in the morning. Waves 7 to 12 feet subsiding to 5 to 8 feet in the afternoon. Waves occasionally to 15 feet. .FRIDAY NIGHT...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. Note...Wave height forecasts are for ice free areas. $$ LSZ145-131000- Duluth MN to Port Wing WI- 1055 PM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TONIGHT...Northeast wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots toward daybreak. Snow in the late evening and early morning, then snow likely toward daybreak. Waves 4 to 7 feet building to 7 to 10 feet toward daybreak. Waves occasionally to 14 feet. .FRIDAY...North wind up to 30 knots with gales to around 35 knots becoming northwest 15 to 20 knots with gusts to around 25 knots in the afternoon. Chance of snow in the morning, then slight chance of snow in the afternoon. Waves 7 to 12 feet subsiding to 3 to 5 feet. Waves occasionally to 15 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SATURDAY...Southwest wind 5 knots becoming east late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-131000- Port Wing to Sand Island WI- 1055 PM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TONIGHT...East wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots toward daybreak. Snow in the late evening and early morning, then snow likely toward daybreak. Waves 4 to 6 feet building to 8 to 11 feet. Waves occasionally to 14 feet. .FRIDAY...North wind up to 30 knots with gales to around 35 knots becoming northwest 15 to 20 knots in the afternoon. Snow in the morning, then chance of snow in the afternoon. Waves 7 to 12 feet subsiding to 4 to 6 feet. Waves occasionally to 16 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. 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. Note...Wave height forecasts are for ice free areas. $$ LSZ147-131000- Sand Island to Bayfield WI- 1055 PM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TONIGHT...East wind up to 30 knots. Gusts up to 30 knots increasing to 35 knots after midnight. Snow. Waves 5 to 8 feet building to 7 to 10 feet toward daybreak. Waves occasionally to 14 feet. .FRIDAY...Northeast wind up to 30 knots with gales to around 35 knots becoming north 15 to 20 knots with gusts to around 25 knots in the afternoon. Snow in the morning, then chance of snow in the afternoon. Waves 7 to 12 feet subsiding to 4 to 6 feet. Waves occasionally to 16 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet after midnight. .SATURDAY...Southwest wind 5 knots becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-131000- Outer Apostle Islands Beyond 5 NM from Mainland- 1055 PM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT FRIDAY... ...GALE WARNING IN EFFECT UNTIL 10 AM CDT FRIDAY... .REST OF TONIGHT...East wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots toward daybreak. Snow through the night. Blowing snow after midnight. Waves 6 to 9 feet building to 9 to 14 feet after midnight. Waves occasionally to 19 feet. .FRIDAY...Northeast wind up to 30 knots with gales to around 35 knots becoming north 15 to 20 knots with gusts to around 25 knots in the afternoon. Snow likely in the morning, then slight chance of snow in the afternoon. Waves 10 to 15 feet subsiding to 6 to 9 feet. Waves occasionally to 19 feet. .FRIDAY NIGHT...North wind 10 to 15 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. Note...Wave height forecasts are for ice free areas. $$ LSZ148-131000- Oak Point to Saxon Harbor WI- 1055 PM CDT Thu Mar 12 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING... .REST OF TONIGHT...East wind 10 to 15 knots rising to 20 to 25 knots after midnight. Gusts up to 30 knots. Snow. Waves 4 to 7 feet. Waves occasionally to 9 feet. .FRIDAY...Northeast wind up to 30 knots with gales to around 35 knots becoming north 20 to 25 knots early in the afternoon, then becoming northwest 10 to 15 knots with gusts to around 20 knots late in the afternoon. Snow in the morning, then snow likely in the afternoon. Waves 7 to 12 feet subsiding to 5 to 8 feet late in the afternoon. Waves occasionally to 16 feet. A gale warning may be needed. .FRIDAY NIGHT...Northwest wind 5 to 10 knots. Partly cloudy. Waves 4 to 6 feet subsiding to 1 to 3 feet. Waves occasionally to 8 feet. .SATURDAY...Southwest wind 5 knots becoming east late in the afternoon. Mostly sunny. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH