FZUS53 KDLH 312154 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 454 PM CDT Tue Mar 31 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. LSZ140-010400- Grand Portage to Grand Marais MN- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots. Chance of snow showers in the evening. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots late in the afternoon. Mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .WEDNESDAY NIGHT...East wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots early in the morning. Slight chance of snow showers in the evening, then chance of snow showers after midnight. Waves 4 to 6 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .THURSDAY...East wind up to 30 knots with gales to around 40 knots becoming northeast gales to 35 knots with gales to around 45 knots in the afternoon. Freezing spray through the day. Snow showers likely in the morning. Snow showers and slight chance of freezing rain in the afternoon. Waves 8 to 11 feet. Waves occasionally to 14 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ141-010400- Grand Marais to Taconite Harbor MN- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...West wind 5 knots becoming north late in the evening, then becoming northeast after midnight. Slight chance of snow showers early in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 25 knots. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots. Gusts up to 25 knots increasing to 35 knots. Chance of snow showers. Waves 4 to 7 feet. Waves occasionally to 9 feet. A gale warning may be needed. .THURSDAY...East wind up to 30 knots with gales to around 40 knots becoming northeast gales to 35 knots with gales to around 45 knots in the afternoon. Chance of snow showers in the morning, then snow showers and slight chance of freezing rain in the afternoon. Freezing spray in the afternoon. Waves 6 to 9 feet building to 7 to 12 feet in the afternoon. Waves occasionally to 16 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ142-010400- Taconite Harbor to Silver Bay Harbor MN- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...West wind 5 knots becoming northeast after midnight. Mostly cloudy then becoming partly cloudy late in the evening then becoming mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...East wind 15 to 20 knots with gusts to around 25 knots. Mostly cloudy. Waves 2 to 4 feet subsiding to 3 to 5 feet in the afternoon. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late evening and overnight. Chance of snow showers through the night. Freezing spray after midnight. Waves 4 to 7 feet. Waves occasionally to 10 feet. A small craft advisory may be needed. .THURSDAY...East wind up to 30 knots with gales to around 35 knots becoming northeast gales to 35 knots with gales to around 40 knots in the afternoon. Snow showers through the day. Slight chance of freezing rain and light sleet in the afternoon. Freezing spray in the afternoon. Waves 7 to 10 feet building to 9 to 14 feet in the afternoon. Waves occasionally to 18 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ143-010400- Silver Bay Harbor to Two Harbors MN- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots late in the night. Partly cloudy until early morning then becoming mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...East wind 20 to 25 knots. Slight chance of snow showers in the afternoon. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind up to 30 knots. Gusts up to 30 knots increasing to 35 knots early in the morning. Chance of snow showers. Waves 5 to 8 feet. Waves occasionally to 10 feet. A gale warning may be needed. .THURSDAY...East wind up to 30 knots with gales to around 40 knots becoming northeast gales to 35 knots with gales to around 45 knots in the afternoon. Snow showers and slight chance of light sleet through the day. Slight chance of freezing rain in the afternoon. Waves 7 to 10 feet building to 9 to 14 feet in the afternoon. Waves occasionally to 18 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ144-010400- Two Harbors to Duluth MN- 454 PM CDT Tue Mar 31 2026 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...North wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots late in the night. Partly cloudy until early morning then becoming mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 20 to 25 knots with gusts to around 30 knots. Slight chance of snow showers in the afternoon. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind up to 30 knots. Gusts up to 35 knots early in the morning. Chance of snow showers. Waves 5 to 8 feet. Waves occasionally to 10 feet. A gale warning may be needed. .THURSDAY...East wind up to 30 knots with gales to around 40 knots becoming northeast gales to 35 knots with gales to around 45 knots in the afternoon. Snow showers and slight chance of light sleet through the day. Slight chance of freezing rain in the afternoon. Waves 9 to 14 feet. Waves occasionally to 18 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ145-010400- Duluth MN to Port Wing WI- 454 PM CDT Tue Mar 31 2026 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...North wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots late in the night. Partly cloudy until early morning then becoming mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY...East wind 20 to 25 knots. Gusts up to 30 knots. Slight chance of snow showers in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind up to 30 knots. Gusts up to 30 knots increasing to 35 knots early in the morning. Chance of snow showers in the evening, then snow showers likely after midnight. Waves 4 to 7 feet. Waves occasionally to 9 feet. A gale warning may be needed. .THURSDAY...East wind up to 30 knots with gales to around 35 knots becoming northeast gales to 35 knots with gales to around 40 knots in the afternoon. Snow showers and slight chance of light sleet through the day. Slight chance of rain showers and freezing rain in the afternoon. Waves 6 to 9 feet building to 8 to 13 feet in the afternoon. Waves occasionally to 17 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ146-010400- Port Wing to Sand Island WI- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots late in the night. Partly cloudy until early morning then becoming mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 20 to 25 knots. Slight chance of snow showers in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind up to 30 knots. Chance of snow showers. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .THURSDAY...East wind up to 30 knots with gales to around 35 knots becoming northeast gales to 35 knots with gales to around 40 knots in the afternoon. Snow showers and slight chance of light sleet through the day. Slight chance of rain showers in the afternoon. Waves 6 to 9 feet building to 7 to 12 feet in the afternoon. Waves occasionally to 16 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ147-010400- Sand Island to Bayfield WI- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots after midnight. Partly cloudy until early morning then becoming mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Slight chance of snow showers in the afternoon. Waves 3 to 5 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots. Chance of snow showers in the evening, then snow showers likely after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .THURSDAY...East wind up to 30 knots. Gusts up to 30 knots increasing to 35 knots in the late morning and afternoon. Snow showers and slight chance of light sleet through the day. Slight chance of rain showers in the afternoon. Waves 5 to 8 feet building to 7 to 12 feet in the afternoon. Waves occasionally to 16 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ150-010400- Outer Apostle Islands Beyond 5 NM from Mainland- 454 PM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 11 PM CDT THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots after midnight. Mostly cloudy then becoming partly cloudy late in the evening then becoming mostly cloudy. Waves 3 to 5 feet. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the afternoon. Mostly cloudy. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots early in the morning. Chance of snow showers. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. .THURSDAY...East wind up to 30 knots. Gusts up to 30 knots increasing to 40 knots. Snow showers and slight chance of light sleet through the day. Slight chance of rain showers in the afternoon. Waves 5 to 8 feet building to 9 to 14 feet. Waves occasionally to 18 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ148-010400- Oak Point to Saxon Harbor WI- 454 PM CDT Tue Mar 31 2026 .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots with gusts to around 20 knots late in the night. Mostly cloudy then becoming partly cloudy late in the evening then becoming mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. .WEDNESDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots late in the afternoon. Slight chance of snow showers in the afternoon. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 15 to 20 knots. Gusts up to 25 knots in the evening then 25 knots early in the morning. Chance of snow showers in the evening, then snow showers likely after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .THURSDAY...Northeast wind 20 to 25 knots. Gusts up to 25 knots increasing to 30 knots in the late morning and afternoon. Slight chance of freezing rain and light sleet in the morning. Snow showers through the day. Sleet, rain showers and freezing rain in the afternoon. Waves 6 to 9 feet. Waves occasionally to 12 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH