FZUS53 KDLH 311308 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 808 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- 808 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 decreasing to 20 knots late. Snow likely early in the morning, then chance of snow in the late morning and afternoon. Waves 3 to 5 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Slight chance of snow in the evening. Waves 1 to 3 feet. .WEDNESDAY...Northeast wind 15 to 20 knots. Partly 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. Mostly cloudy. 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. $$ LSZ141-312200- Grand Marais to Taconite Harbor MN- 808 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 15 to 20 knots becoming east 5 to 10 knots late. Gusts up to 25 knots. Snow likely early in the morning, then chance of snow in the afternoon. Waves 3 to 5 feet. .TONIGHT...Northeast wind 5 to 10 knots. Slight chance of snow in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 15 to 20 knots with gusts to around 25 knots. Partly sunny. Waves 1 to 3 feet building to 2 to 4 feet in the afternoon. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots after midnight. Slight chance of snow after midnight. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ142-312200- Taconite Harbor to Silver Bay Harbor MN- 808 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 easing to 5 knots late. Gusts up to 20 knots early in the morning. Snow likely early in the morning, then chance of snow in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet. .TONIGHT...Northeast wind 5 knots becoming north late in the evening, then becoming northeast after midnight. Slight chance of snow in the evening. Waves 2 to 4 feet. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 25 knots. Partly sunny. 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 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the late evening and overnight. Slight chance of snow after midnight. 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. $$ LSZ143-312200- Silver Bay Harbor to Two Harbors MN- 808 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Snow likely and slight chance of rain early in the morning, then slight chance of snow in the afternoon. Waves 4 to 6 feet. Waves occasionally to 7 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Mostly cloudy. Waves 2 to 4 feet. .WEDNESDAY...East wind 20 to 25 knots. Slight chance of snow in the afternoon. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots with gusts to around 30 knots. Slight chance of snow in the evening, then chance of snow after midnight. Waves 5 to 8 feet. Waves occasionally to 10 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ144-312200- Two Harbors to Duluth MN- 808 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... ...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 early in the morning. Chance of rain and snow early in the morning. Waves 4 to 6 feet. Waves occasionally to 7 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 20 to 25 knots. Gusts up to 30 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 20 to 25 knots with gusts to around 30 knots. Slight chance of snow in the evening, then chance of snow after midnight. Waves 5 to 8 feet. Waves occasionally to 10 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ145-312200- Duluth MN to Port Wing WI- 808 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Chance of rain, snow and light freezing rain early in the morning, then slight chance of rain and snow late in the morning. Waves 3 to 5 feet. Waves occasionally to 7 feet. .TONIGHT...North wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly cloudy. Waves 1 to 3 feet. .WEDNESDAY...East wind 20 to 25 knots with gusts to around 30 knots. Slight chance of snow in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 20 to 25 knots with gusts to around 30 knots. Slight chance of snow in the evening, then chance of snow after midnight. Waves 4 to 7 feet. Waves occasionally to 9 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ146-312200- Port Wing to Sand Island WI- 808 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 early in the morning. Chance of rain and light freezing rain early in the morning. Chance of snow early in the morning. Slight chance of rain late in the morning. Waves 3 to 5 feet. Waves occasionally to 7 feet. .TONIGHT...North wind 10 to 15 knots becoming northeast with gusts to around 20 knots early in the morning. 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 20 to 25 knots. Gusts up to 30 knots in the evening then 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 8 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ147-312200- Sand Island to Bayfield WI- 808 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... ...GALE WATCH IN EFFECT FROM THURSDAY MORNING THROUGH LATE THURSDAY NIGHT... .REST OF TODAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Chance of rain, snow and light freezing rain early in the morning, then slight chance of snow in the afternoon. Waves 3 to 5 feet. Waves occasionally to 7 feet. .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet after midnight. .WEDNESDAY...East wind 15 to 20 knots. Gusts up to 25 knots late in the afternoon. Mostly cloudy. Waves 3 to 5 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 15 to 20 knots with gusts to around 25 knots. Slight chance of snow in the evening, then chance of snow after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ150-312200- Outer Apostle Islands Beyond 5 NM from Mainland- 808 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 15 to 20 knots. Gusts up to 25 knots. Snow likely, chance of rain and light freezing rain early in the morning, then slight chance of snow in the afternoon. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. .WEDNESDAY...East wind 15 to 20 knots. Gusts up 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 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots early in the morning. Chance of snow 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. $$ LSZ148-312200- Oak Point to Saxon Harbor WI- 808 AM CDT Tue Mar 31 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .REST OF TODAY...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming north 5 to 10 knots late. Chance of rain early in the morning, then chance of snow, light freezing rain and slight chance of rain late in the morning. Waves 4 to 6 feet. Waves occasionally to 8 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Mostly cloudy. Waves 3 to 5 feet. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY...Northeast wind 15 to 20 knots. Gusts up to 25 knots late in the afternoon. Mostly cloudy. Waves 2 to 4 feet subsiding to 4 to 6 feet in the afternoon. Waves occasionally to 7 feet. A small craft advisory may be needed. .WEDNESDAY NIGHT...East wind 15 to 20 knots with gusts to around 25 knots. Slight chance of snow in the evening, then chance of snow after midnight. Waves 4 to 6 feet. Waves occasionally to 8 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH