FZUS53 KDLH 130624 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 124 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. LSZ140-131600- Grand Portage to Grand Marais MN- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 to 10 knots becoming east late in the afternoon. Patchy fog in the morning. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. 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 subsiding to 1 to 2 feet 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. $$ LSZ141-131600- Grand Marais to Taconite Harbor MN- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming north early in the afternoon, then becoming east late in the afternoon. Patchy fog early in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog. Chance of rain showers. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Chance of rain showers through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...North wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-131600- Taconite Harbor to Silver Bay Harbor MN- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of rain showers late in the afternoon. 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 3 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. 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. $$ LSZ143-131600- Silver Bay Harbor to Two Harbors MN- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of showers and thunderstorms late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 20 knots increasing to 25 knots in the late evening and early morning, then decreasing to 20 knots early in the morning. Patchy fog through the night. Slight chance of thunderstorms in the evening. Chance of rain showers through the night. Waves 1 to 3 feet. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Chance of rain showers in the morning, then slight chance of rain showers in the afternoon. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-131600- Two Harbors to Duluth MN- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming northeast 10 to 15 knots in the afternoon. Patchy fog in the morning. Chance of rain showers and slight chance of thunderstorms late in the afternoon. 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 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 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. $$ LSZ145-131600- Duluth MN to Port Wing WI- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming northwest late in the morning, then becoming northeast 10 to 15 knots in the afternoon. Patchy fog in the morning. Chance of rain showers and slight chance of thunderstorms late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 15 to 20 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 3 feet building to 2 to 4 feet in the late evening and overnight. A small craft advisory may be needed. .TUESDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ146-131600- Port Wing to Sand Island WI- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of showers and thunderstorms late in the afternoon. 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 3 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 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. $$ LSZ147-131600- Sand Island to Bayfield WI- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...West wind 5 knots becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of rain showers late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 25 knots in the late evening and early morning decreasing to 20 knots. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .TUESDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 5 knots late in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 1 to 3 feet. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-131600- Outer Apostle Islands Beyond 5 NM from Mainland- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northwest wind 5 to 10 knots becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of rain showers late in the afternoon. 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 3 feet building to 2 to 4 feet after midnight. A small craft advisory may be needed. .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 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. .TUESDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-131600- Oak Point to Saxon Harbor WI- 124 AM CDT Mon Apr 13 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Northwest wind 5 knots becoming northeast in the afternoon. Patchy fog early in the morning. Slight chance of rain showers late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots until early morning. Patchy fog. Chance of rain showers and slight chance of thunderstorms. Waves 1 to 3 feet. .TUESDAY...Northeast wind 5 to 10 knots becoming north in the afternoon. Patchy fog in the morning. Slight chance of rain showers through the day. Waves 1 to 3 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TUESDAY NIGHT...Northeast wind 5 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH