FZUS53 KDLH 311554 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1054 AM 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. LSZ140-312200- Grand Portage to Grand Marais MN- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH FRIDAY MORNING... .REST OF TODAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots. Slight chance of snow in the afternoon. Waves 3 to 5 feet. .TONIGHT...Northeast wind 10 to 15 knots. Slight chance of snow in the evening. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 15 to 20 knots. Mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet late in the afternoon. .WEDNESDAY NIGHT...East wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots early in the morning. Slight chance of snow in the evening, then chance of snow after midnight. Waves 4 to 6 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ141-312200- Grand Marais to Taconite Harbor MN- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...East wind 10 to 15 knots. Gusts up to 20 knots late in the morning. Chance of snow in the afternoon. Waves 3 to 5 feet. .TONIGHT...West wind 5 knots becoming northeast after midnight. Slight chance of snow in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 15 to 20 knots. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots. Gusts up to 25 knots increasing to 35 knots. Chance of snow. Waves 4 to 7 feet. Waves occasionally to 9 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ142-312200- Taconite Harbor to Silver Bay Harbor MN- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 5 to 10 knots becoming southeast late. Slight chance of snow in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet. .TONIGHT...Northwest wind 5 knots becoming northeast after midnight. Partly cloudy 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. Waves 4 to 7 feet. Waves occasionally to 10 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ143-312200- Silver Bay Harbor to Two Harbors MN- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 4 to 6 feet. Waves occasionally to 7 feet. .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...East wind 20 to 25 knots. Slight chance of snow in the afternoon. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind up to 30 knots. Gusts up to 30 knots increasing to 35 knots early in the morning. Chance of snow. Waves 5 to 8 feet. Waves occasionally to 10 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ144-312200- Two Harbors to Duluth MN- 1054 AM CDT Tue Mar 31 2026 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 5 knots becoming north late. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots early in the morning. Partly 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 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. Waves 5 to 8 feet. Waves occasionally to 10 feet. A gale warning may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ145-312200- Duluth MN to Port Wing WI- 1054 AM CDT Tue Mar 31 2026 ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 5 to 10 knots becoming north late. Cloudy late in the morning then becoming partly sunny. Waves 3 to 5 feet. .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY...East wind 20 to 25 knots. Slight chance of snow in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind up to 30 knots. Chance of snow in the evening, then snow likely after midnight. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ146-312200- Port Wing to Sand Island WI- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 5 to 10 knots. Mostly cloudy in the late morning and early afternoon then becoming mostly sunny. Waves 3 to 5 feet. Waves occasionally to 7 feet. .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots early in the morning. Partly cloudy in the evening 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 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. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ147-312200- Sand Island to Bayfield WI- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. .TONIGHT...Northwest wind 5 knots becoming northeast after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 25 knots. Slight chance of snow in the afternoon. Waves 3 to 5 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 15 to 20 knots with gusts to around 25 knots. Chance of snow in the evening, then snow likely after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ150-312200- Outer Apostle Islands Beyond 5 NM from Mainland- 1054 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots late in the morning. Mostly cloudy. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northwest wind 5 to 10 knots becoming northeast 10 to 15 knots after midnight. Partly cloudy in the evening then becoming mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots late 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. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ148-312200- Oak Point to Saxon Harbor WI- 1054 AM CDT Tue Mar 31 2026 .REST OF TODAY...North wind 5 to 10 knots. Mostly cloudy. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northwest wind 5 knots becoming northeast early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY...Northeast wind 15 to 20 knots. Slight chance of snow in the afternoon. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 15 to 20 knots. Gusts up to 25 knots in the evening then 25 knots early in the morning. Chance of snow in the evening, then snow likely after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH