FZUS53 KDLH 131345 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 844 AM 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. LSZ140-132200- Grand Portage to Grand Marais MN- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TODAY...Northwest wind 5 knots becoming east late. Mostly cloudy. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog through the night. Slight chance of rain showers through the night. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 25 knots. Patchy fog in the morning. Chance of rain showers through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...North wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-132200- Grand Marais to Taconite Harbor MN- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .REST OF TODAY...Northwest wind 5 knots becoming east late. Mostly cloudy. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Chance of rain showers through the night. Patchy fog after midnight. Waves 1 to 2 feet building to 1 to 3 feet after midnight. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Chance of rain showers. Waves 1 to 3 feet. .TUESDAY NIGHT...North wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-132200- Taconite Harbor to Silver Bay Harbor MN- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...West wind 5 knots becoming northeast in the afternoon. Slight chance of rain showers late. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Chance of rain showers through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...North wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-132200- Silver Bay Harbor to Two Harbors MN- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Southwest wind 5 knots becoming northwest late in the morning, then becoming northeast in the afternoon. Slight chance of showers and thunderstorms late. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late evening and early morning, then decreasing to 20 knots early in the morning. Patchy fog through the night. Slight chance of thunderstorms in the evening. Chance of rain showers through the night. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Chance of rain showers in the morning, then slight chance of rain showers in the afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-132200- Two Harbors to Duluth MN- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...West wind 5 knots becoming northwest late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Chance of rain showers and slight chance of thunderstorms late. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots in the late evening and overnight. Patchy fog through the night. Slight chance of thunderstorms in the evening. Chance of rain showers through the night. Waves 2 to 4 feet. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ145-132200- Duluth MN to Port Wing WI- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...West wind 5 knots becoming northwest late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Chance of rain showers and slight chance of thunderstorms late. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 2 to 4 feet. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-132200- Port Wing to Sand Island WI- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...West wind 5 knots becoming northeast in the afternoon. Slight chance of showers and thunderstorms late. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late evening and early morning, then decreasing to 20 knots early in the morning. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-132200- Sand Island to Bayfield WI- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Northwest wind 5 knots becoming northeast in the afternoon. Slight chance of rain showers late. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-132200- Outer Apostle Islands Beyond 5 NM from Mainland- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY AFTERNOON... .REST OF TODAY...Northwest wind 5 knots becoming northeast in the afternoon. Slight chance of rain showers late. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late evening and overnight. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 3 to 5 feet in the late evening and overnight. Waves occasionally to 7 feet. .TUESDAY...Northeast wind 15 to 20 knots easing to 5 to 10 knots late in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 3 to 5 feet. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-132200- Oak Point to Saxon Harbor WI- 844 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .REST OF TODAY...Variable winds 10 knots or less becoming northwest 5 knots late in the morning, then becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of rain showers late. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots until early morning. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. .TUESDAY...Northeast wind 5 to 10 knots becoming north in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH