FZUS53 KDLH 151448 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 948 AM CDT Sun Mar 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. LSZ140-152200- Grand Portage to Grand Marais MN- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY AFTERNOON... ...STORM WARNING IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northeast wind up to 30 knots. Gales up to 45 knots. Heavy freezing spray through the day. Chance of snow late in the morning. Snow likely early in the afternoon, then chance of snow late. Waves 7 to 10 feet. Waves occasionally to 13 feet. .TONIGHT...North gales to 40 knots with storm force gusts to around 50 knots. Slight chance of snow in the evening. Heavy freezing spray through the night. Waves 7 to 10 feet. Waves occasionally to 14 feet. .MONDAY...North gales to 40 knots with storm force gusts to around 50 knots easing to up to 30 knots with gales to around 45 knots late in the afternoon. Slight chance of snow in the morning. Heavy freezing spray through the day. Waves 7 to 10 feet subsiding to 4 to 7 feet late in the afternoon. Waves occasionally to 13 feet. .MONDAY NIGHT...North wind up to 30 knots with gales to around 40 knots easing to 15 to 20 knots with gusts to around 25 knots early in the morning. Mostly clear. Waves 4 to 6 feet subsiding to 2 to 4 feet after midnight. Waves occasionally to 8 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ141-152200- Grand Marais to Taconite Harbor MN- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH LATE MONDAY NIGHT... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northeast wind up to 30 knots. Gusts up to 30 knots increasing to 35 knots in the afternoon. Freezing spray. Chance of snow. Waves 5 to 8 feet. Waves occasionally to 11 feet. .TONIGHT...North wind up to 30 knots. Gales up to 40 knots increasing to 50 knots. Heavy freezing spray. Waves 4 to 7 feet. Waves occasionally to 9 feet. A storm warning may be needed. .MONDAY...North wind up to 30 knots. Gales up to 45 knots decreasing to 35 knots. Heavy freezing spray in the morning. Waves 4 to 7 feet subsiding to 3 to 5 feet late in the afternoon. Waves occasionally to 9 feet. .MONDAY NIGHT...North wind 20 to 25 knots with gales to around 35 knots becoming northwest 10 to 15 knots with gusts to around 25 knots after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. Note...Wave height forecasts are for ice free areas. $$ LSZ142-152200- Taconite Harbor to Silver Bay Harbor MN- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY AFTERNOON... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots. Freezing spray late in the morning. Freezing spray late. Chance of snow late in the morning, then snow likely early in the afternoon. Chance of snow late. Waves 7 to 10 feet. Waves occasionally to 13 feet. .TONIGHT...North wind up to 30 knots. Gusts up to 35 knots increasing to 45 knots. Slight chance of snow in the evening. Freezing spray through the night. Waves 6 to 9 feet. Waves occasionally to 12 feet. .MONDAY...North wind up to 30 knots. Gales up to 45 knots decreasing to 30 knots. Heavy freezing spray in the morning. Waves 4 to 7 feet subsiding to 3 to 5 feet in the afternoon. Waves occasionally to 9 feet. .MONDAY NIGHT...North wind 15 to 20 knots with gusts to around 30 knots becoming northwest 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-152200- Silver Bay Harbor to Two Harbors MN- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY MORNING... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY MORNING... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots. Freezing spray through the day. Snow likely late in the morning. Snow early in the afternoon, then snow likely late. Waves 7 to 12 feet. Waves occasionally to 15 feet. .TONIGHT...North wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots after midnight. Chance of snow in the evening. Freezing spray through the night. Waves 7 to 10 feet subsiding to 5 to 8 feet early in the morning. Waves occasionally to 13 feet. .MONDAY...North wind up to 30 knots with gales to around 40 knots easing to 15 to 20 knots with gusts to around 30 knots late in the afternoon. Heavy freezing spray in the morning. Waves 5 to 8 feet subsiding to 3 to 5 feet in the afternoon. Waves occasionally to 10 feet. .MONDAY NIGHT...Northwest wind 15 to 20 knots with gusts to around 25 knots easing to 5 to 10 knots early in the morning. Mostly clear. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late evening and overnight. Note...Wave height forecasts are for ice free areas. $$ LSZ144-152200- Two Harbors to Duluth MN- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY MORNING... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY MORNING... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots. Freezing spray through the day. Snow in the late morning and early afternoon. Snow likely late. Waves 7 to 12 feet. Waves occasionally to 15 feet. .TONIGHT...North wind up to 30 knots. Gusts up to 35 knots increasing to 40 knots in the late evening and overnight. Freezing spray through the night. Chance of snow in the evening. Slight chance of snow after midnight. Waves 7 to 10 feet subsiding to 5 to 8 feet after midnight. Waves occasionally to 13 feet. .MONDAY...North wind up to 30 knots. Gales up to 40 knots decreasing to 30 knots. Heavy freezing spray in the morning. Waves 4 to 7 feet subsiding to 2 to 4 feet in the afternoon. Waves occasionally to 9 feet. .MONDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to 15 knots after midnight. Mostly clear. Waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening and overnight. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ145-152200- Duluth MN to Port Wing WI- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY MORNING... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY MORNING... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots rising to gales to 35 knots with gales to around 40 knots in the afternoon. Freezing spray through the day. Snow in the late morning and early afternoon. Snow likely late. Waves 9 to 14 feet. Waves occasionally to 18 feet. .TONIGHT...North gales to 35 knots with gales to around 40 knots. Heavy freezing spray through the night. Chance of snow in the evening. Slight chance of snow after midnight. Waves 8 to 13 feet. Waves occasionally to 16 feet. .MONDAY...North gales to 35 knots with gales to around 40 knots easing to up to 30 knots with gales to around 35 knots in the late morning and afternoon. Heavy freezing spray. Waves 8 to 11 feet subsiding to 4 to 7 feet in the afternoon. Waves occasionally to 14 feet. .MONDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 2 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ146-152200- Port Wing to Sand Island WI- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY MORNING... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY MORNING... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots rising to gales to 35 knots with gales to around 40 knots in the afternoon. Freezing spray through the day. Snow in the late morning and early afternoon. Snow likely late. Waves 9 to 14 feet. Waves occasionally to 18 feet. .TONIGHT...North gales to 35 knots with gales to around 40 knots. Heavy freezing spray. Chance of snow. Waves 8 to 13 feet. Waves occasionally to 17 feet. .MONDAY...North gales to 35 knots with gales to around 40 knots easing to 20 to 25 knots with gusts to around 30 knots. Heavy freezing spray. Slight chance of snow. Waves 8 to 13 feet subsiding to 6 to 9 feet. Waves occasionally to 17 feet. .MONDAY NIGHT...Northwest wind 20 to 25 knots easing to 10 to 15 knots with gusts to around 20 knots after midnight. Heavy freezing spray in the evening. Waves 4 to 7 feet subsiding to 1 to 3 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ147-152200- Sand Island to Bayfield WI- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY AFTERNOON... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots rising to gales to 35 knots with gales to around 40 knots in the afternoon. Freezing spray through the day. Snow in the late morning and early afternoon. Snow likely late. Waves 7 to 12 feet building to 9 to 14 feet in the afternoon. Waves occasionally to 18 feet. .TONIGHT...North gales to 35 knots with gales to around 40 knots. Heavy freezing spray. Chance of snow. Waves 9 to 14 feet. Waves occasionally to 18 feet. .MONDAY...North gales to 35 knots with gales to around 40 knots easing to up to 30 knots with gales to around 35 knots in the late morning and afternoon. Heavy freezing spray through the day. Slight chance of snow through the day. Waves 8 to 13 feet subsiding to 6 to 9 feet in the afternoon. Waves occasionally to 17 feet. .MONDAY NIGHT...North wind 20 to 25 knots with gusts to around 30 knots easing to 10 to 15 knots with gusts to around 20 knots after midnight. Heavy freezing spray in the evening. Waves 4 to 7 feet subsiding to 2 to 4 feet after midnight. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ150-152200- Outer Apostle Islands Beyond 5 NM from Mainland- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY AFTERNOON... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots rising to gales to 35 knots with gales to around 40 knots in the afternoon. Freezing spray through the day. Snow in the late morning and early afternoon. Snow likely late. Waves 7 to 12 feet building to 13 to 18 feet. Waves occasionally to 23 feet. .TONIGHT...North gales to 40 knots with gales to around 45 knots. Heavy freezing spray and blowing snow. Chance of snow. Waves 14 to 19 feet. Waves occasionally to 25 feet. .MONDAY...North gales to 35 knots with gales to around 45 knots easing to up to 30 knots with gales to around 40 knots in the late morning and afternoon. Blowing snow in the morning. Heavy freezing spray through the day. Chance of snow in the morning. Slight chance of snow in the afternoon. Waves 14 to 19 feet subsiding to 8 to 11 feet. Waves occasionally to 24 feet. .MONDAY NIGHT...North wind 20 to 25 knots with gusts to around 30 knots easing to 10 to 15 knots with gusts to around 20 knots early in the morning. Heavy freezing spray in the evening. Waves 6 to 9 feet subsiding to 4 to 6 feet after midnight. Waves occasionally to 12 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ148-152200- Oak Point to Saxon Harbor WI- 948 AM CDT Sun Mar 15 2026 ...GALE WARNING IN EFFECT THROUGH MONDAY AFTERNOON... ...HEAVY FREEZING SPRAY WARNING IN EFFECT THROUGH MONDAY AFTERNOON... .REST OF TODAY...Northeast wind up to 30 knots with gales to around 35 knots rising to gales to 35 knots with gales to around 45 knots in the afternoon. Blowing snow in the late morning and early afternoon. Freezing spray through the day. Snow through the day. Waves 8 to 11 feet building to 11 to 16 feet. Waves occasionally to 21 feet. .TONIGHT...North gales to 40 knots. Storm force gusts up to 50 knots decreasing to 45 knots after midnight. Heavy freezing spray through the night. Blowing snow after midnight. Snow likely in the evening. Chance of snow after midnight. Waves 13 to 18 feet. Waves occasionally to 23 feet. A storm warning may be needed. .MONDAY...North gales to 40 knots with gales to around 45 knots easing to up to 30 knots with gales to around 35 knots in the afternoon. Heavy freezing spray through the day. Chance of snow through the day. Waves 13 to 18 feet subsiding to 7 to 10 feet. Waves occasionally to 23 feet. .MONDAY NIGHT...North wind 20 to 25 knots with gusts to around 30 knots becoming northwest 10 to 15 knots with gusts to around 20 knots early in the morning. Heavy freezing spray in the evening. Waves 5 to 8 feet subsiding to 4 to 6 feet after midnight. Waves occasionally to 11 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH