FZUS53 KDLH 132251 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 551 PM CDT Mon Apr 13 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. LSZ140-140400- Grand Portage to Grand Marais MN- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots. Slight chance of rain in the late evening and overnight. Patchy fog after midnight. Waves 1 to 2 feet. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the morning. Patchy fog through the day. Chance of rain through the day. Waves 1 to 2 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots becoming north after midnight. Patchy fog after midnight. Waves 1 foot or less. .WEDNESDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ141-140400- Grand Marais to Taconite Harbor MN- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY MORNING... .TONIGHT...Northeast wind 5 to 10 knots. Gusts up to 20 knots after midnight. Slight chance of rain until early morning. Chance of rain late in the night. Patchy fog after midnight. Waves 1 to 2 feet. .TUESDAY...Northeast wind 5 to 10 knots. Patchy fog through the day. Chance of rain through the day. Waves 1 to 2 feet. .TUESDAY NIGHT...Northeast wind 5 knots becoming northwest after midnight, then becoming north early in the morning. Patchy fog after midnight. Waves 1 to 2 feet. .WEDNESDAY...East wind 5 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ142-140400- Taconite Harbor to Silver Bay Harbor MN- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 5 to 10 knots. Slight chance of rain until early morning. Chance of rain late in the night. Patchy fog after midnight. Waves 1 to 2 feet. .TUESDAY...Northeast wind 5 to 10 knots. Patchy fog through the day. Chance of rain in the morning. Slight chance of rain in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots early in the evening becoming variable 10 knots or less, then becoming north 5 knots after midnight. Patchy fog after midnight. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-140400- Silver Bay Harbor to Two Harbors MN- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Slight chance of rain through the night. Patchy fog after midnight. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots easing to 5 knots late in the afternoon. Patchy fog through the day. Chance of rain in the morning. Slight chance of rain in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Patchy fog after midnight. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-140400- Two Harbors to Duluth MN- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Chance of rain in the evening, then slight chance of rain after midnight. Patchy fog after midnight. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots easing to 5 knots late in the afternoon. Patchy fog through the day. Chance of rain in the morning. Slight chance of rain in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Patchy fog after midnight. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-140400- Duluth MN to Port Wing WI- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Chance of rain in the evening, then slight chance of rain after midnight. Patchy fog after midnight. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots. Slight chance of rain in the morning. Patchy fog through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Patchy fog. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 10 to 15 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-140400- Port Wing to Sand Island WI- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots after midnight. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog after midnight. Waves 1 to 2 feet building to 1 to 3 feet after midnight. .TUESDAY...Northeast wind 5 to 10 knots. Slight chance of rain in the morning. Patchy fog through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Patchy fog. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-140400- Sand Island to Bayfield WI- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog after midnight. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...Northeast wind 5 to 10 knots. Patchy fog through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Patchy fog. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-140400- Outer Apostle Islands Beyond 5 NM from Mainland- 551 PM CDT Mon Apr 13 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING THROUGH TUESDAY AFTERNOON... .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the late evening and overnight. Slight chance of rain early in the evening, then chance of rain in the late evening and overnight. Patchy fog after midnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Patchy fog through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Patchy fog. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ148-140400- Oak Point to Saxon Harbor WI- 551 PM CDT Mon Apr 13 2026 .TONIGHT...Northeast wind 5 to 10 knots. Chance of rain until early morning. Slight chance of rain late in the night. Patchy fog in the late evening and overnight. Waves 1 to 3 feet building to 2 to 4 feet after midnight. .TUESDAY...Northeast wind 5 to 10 knots becoming north in the afternoon. Patchy fog through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...North wind 5 knots. Patchy dense fog through the night. Waves 1 to 2 feet. .WEDNESDAY...Northeast wind 5 to 10 knots. Partly sunny. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH