FZUS53 KDLH 160623 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 123 AM CDT Thu Apr 16 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. LSZ140-161600- Grand Portage to Grand Marais MN- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Southwest wind 5 knots becoming south late in the afternoon. Areas of dense fog in the morning, then patchy fog early in the afternoon. Areas of dense fog late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Patchy dense fog through the night. Slight chance of rain after midnight. Waves 1 to 2 feet. .FRIDAY...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the morning. Patchy fog in the morning. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 30 knots. Patchy fog in the evening. Rain and chance of thunderstorms in the evening, then rain likely after midnight. Waves 2 to 4 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-161600- Grand Marais to Taconite Harbor MN- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming south 5 knots in the late morning and early afternoon, then becoming east late in the afternoon. Areas of dense fog in the morning, then patchy fog in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Patchy fog through the night. Slight chance of rain after midnight. Waves 1 to 2 feet. .FRIDAY...Northeast wind 5 to 10 knots becoming north late in the afternoon. Patchy fog in the morning. Rain and chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 20 knots increasing to 30 knots in the late evening and overnight. Rain and chance of thunderstorms in the evening. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-161600- Taconite Harbor to Silver Bay Harbor MN- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming southeast 5 knots in the late morning and early afternoon, then becoming east late in the afternoon. Widespread dense fog early in the morning, then areas of fog late in the morning. Patchy fog in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 5 to 10 knots. Patchy fog through the night. Waves 1 to 2 feet. .FRIDAY...Northeast wind 5 to 10 knots. Rain and chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots in the late evening and early morning, then decreasing to 25 knots early in the morning. Rain and chance of thunderstorms in the evening. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ143-161600- Silver Bay Harbor to Two Harbors MN- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming northeast 10 to 15 knots. Widespread dense fog early in the morning, then areas of fog late in the morning. Patchy fog in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the evening. Patchy fog through the night. Waves 1 to 2 feet. .FRIDAY...Northeast wind 5 to 10 knots. Patchy fog in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots. Rain and chance of thunderstorms in the evening. Chance of snow through the night. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ144-161600- Two Harbors to Duluth MN- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming northeast 10 to 15 knots. Widespread dense fog early in the morning, then areas of fog late in the morning. Patchy fog in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the evening. Patchy fog in the evening. Waves 1 to 2 feet. .FRIDAY...Northeast wind 5 to 10 knots becoming north 10 to 15 knots with gusts to around 20 knots late in the afternoon. Slight chance of rain in the morning, then rain and chance of thunderstorms in the afternoon. Patchy fog in the afternoon. Waves 1 to 2 feet. .FRIDAY NIGHT...Northwest wind 15 to 20 knots. Gusts up to 25 knots increasing to 30 knots after midnight, then decreasing to 25 knots early in the morning. Rain and chance of thunderstorms in the evening. Chance of snow through the night. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ145-161600- Duluth MN to Port Wing WI- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming northeast 10 to 15 knots in the late morning and afternoon. Widespread dense fog early in the morning, then areas of fog late in the morning. Patchy fog in the afternoon. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots in the evening. Patchy fog in the evening. Waves 1 to 2 feet. .FRIDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots becoming northwest with gusts to around 20 knots late in the afternoon. Slight chance of rain in the morning, then rain and chance of thunderstorms in the afternoon. Patchy fog in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 15 to 20 knots with gusts to around 25 knots. Rain and chance of thunderstorms in the evening. Chance of snow through the night. Waves 2 to 4 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ146-161600- Port Wing to Sand Island WI- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming northeast 10 to 15 knots. Areas of dense fog early in the morning, then patchy fog in the late morning and afternoon. Waves 1 to 2 feet. .TONIGHT...Northeast wind 10 to 15 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. .FRIDAY...Northeast wind 5 to 10 knots becoming northwest late in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots. Rain and chance of thunderstorms in the evening. Waves 2 to 4 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ147-161600- Sand Island to Bayfield WI- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming east 5 to 10 knots. Areas of dense fog early in the morning, then patchy dense fog in the late morning and early afternoon. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. .FRIDAY...East wind 5 to 10 knots becoming northeast early in the afternoon, then becoming west late in the afternoon. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots. Rain and chance of thunderstorms in the evening. Waves 1 to 3 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ150-161600- Outer Apostle Islands Beyond 5 NM from Mainland- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming southeast 5 knots late in the morning, then becoming east in the afternoon. Widespread dense fog early in the morning, then areas of dense fog late in the morning. Patchy fog in the afternoon. Waves 1 foot or less. .TONIGHT...East wind 5 to 10 knots. Patchy fog in the evening. Waves 1 to 2 feet. .FRIDAY...Southeast wind 5 to 10 knots becoming northeast 10 to 15 knots early in the afternoon, then becoming west 5 to 10 knots late in the afternoon. Patchy fog in the morning. Rain and chance of thunderstorms in the afternoon. Waves 1 to 3 feet. .FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots. Rain and chance of thunderstorms in the evening. Waves 2 to 4 feet. A small craft advisory may be needed. Note...Wave height forecasts are for ice free areas. $$ LSZ148-161600- Oak Point to Saxon Harbor WI- 123 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming east 5 to 10 knots in the late morning and afternoon. Widespread dense fog early in the morning, then areas of fog late in the morning. Patchy fog in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots becoming south with gusts to around 20 knots early in the morning. Partly cloudy. Waves 1 foot or less. .FRIDAY...South wind 10 to 15 knots becoming southwest. Gusts up to 20 knots. Rain and chance of thunderstorms in the afternoon. Waves 1 to 2 feet. .FRIDAY NIGHT...West wind 15 to 20 knots. Gusts up to 25 knots early in the morning. Chance of thunderstorms in the evening. Rain through the night. Waves 1 to 3 feet building to 2 to 4 feet after midnight. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH