FZUS53 KDLH 151303 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 803 AM CDT Wed Apr 15 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. LSZ140-151600- Grand Portage to Grand Marais MN- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...North wind 5 knots becoming east early in the afternoon, then becoming east 5 knots late in the afternoon. Patchy dense fog through the day. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming south in the afternoon. Areas of dense fog in the morning, then patchy fog in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ141-151600- Grand Marais to Taconite Harbor MN- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...South wind 5 knots becoming east late in the afternoon. Patchy dense fog in the morning. Patchy fog late in the afternoon. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Areas of dense fog in the morning, then patchy fog in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ142-151600- Taconite Harbor to Silver Bay Harbor MN- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Southwest wind 5 knots becoming east in the afternoon. Patchy dense fog early in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy dense fog through the night. Waves 1 foot or less. .THURSDAY...Northeast wind 5 knots becoming east in the late morning and afternoon. Patchy dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ143-151600- Silver Bay Harbor to Two Harbors MN- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Southwest wind 5 knots becoming east in the afternoon. Patchy dense fog in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Areas of dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ144-151600- Two Harbors to Duluth MN- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...South wind 5 knots becoming east in the late morning and early afternoon, then becoming northeast late in the afternoon. Areas of dense fog early in the morning, then patchy dense fog late in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...East wind 10 to 15 knots with gusts to around 20 knots. Widespread dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 10 to 15 knots with gusts to around 20 knots easing to 10 knots early in the morning. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ145-151600- Duluth MN to Port Wing WI- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...South wind 5 knots becoming northeast in the late morning and afternoon. Areas of dense fog early in the morning, then patchy dense fog late in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Areas of dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ146-151600- Port Wing to Sand Island WI- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Southwest wind 5 knots becoming northeast in the late morning and afternoon. Areas of dense fog early in the morning, then patchy dense fog late in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 10 to 15 knots with gusts to around 20 knots. Areas of dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...Northeast wind 10 to 15 knots. Gusts up to 20 knots early in the evening. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ147-151600- Sand Island to Bayfield WI- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...South wind 5 knots becoming northeast in the late morning and afternoon. Patchy dense fog early in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Areas of dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. Note...Wave height forecasts are for ice free areas. $$ LSZ150-151600- Outer Apostle Islands Beyond 5 NM from Mainland- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Southwest wind 5 knots becoming northeast in the late morning and afternoon. Patchy dense fog in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots. Areas of dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ LSZ148-151600- Oak Point to Saxon Harbor WI- 803 AM CDT Wed Apr 15 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING... .TODAY...Variable winds 10 knots or less becoming northeast 5 knots in the late morning and afternoon. Areas of dense fog early in the morning. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots. Patchy fog in the evening, then areas of dense fog after midnight. Waves 1 foot or less. .THURSDAY...Northeast wind 5 to 10 knots becoming east late in the afternoon. Areas of dense fog in the morning. Waves 1 foot or less. .THURSDAY NIGHT...East wind 5 to 10 knots. Partly cloudy. Waves 1 to 2 feet. Note...Wave height forecasts are for ice free areas. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH