852  
FZUS53 KDLH 060907  
NSHDLH  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE DULUTH MN  
407 AM CDT THU AUG 6 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.  
 
LSZ140-061600-  
GRAND PORTAGE TO GRAND MARAIS MN-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH FRIDAY AFTERNOON...  
   
TODAY
 
SOUTHWEST WIND 20 TO 25 KNOTS. GUSTS UP TO 25 KNOTS  
INCREASING TO 30 KNOTS IN THE LATE MORNING AND AFTERNOON. MOSTLY  
SUNNY. WAVES 3 TO 5 FEET.    
TONIGHT
 
SOUTHWEST WIND 15 TO 20 KNOTS WITH GUSTS TO AROUND  
25 KNOTS. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER  
MIDNIGHT. WAVES 2 TO 4 FEET.    
FRIDAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS  
DECREASING TO 20 KNOTS IN THE LATE MORNING AND AFTERNOON. CHANCE  
OF RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS THROUGH THE  
DAY. WAVES 2 TO 4 FEET SUBSIDING TO 1 TO 3 FEET LATE IN THE  
AFTERNOON.    
FRIDAY NIGHT
 
WEST WIND 5 TO 10 KNOTS. PARTLY CLOUDY. WAVES  
1 TO 2 FEET.  
 

 
 
LSZ141-061600-  
GRAND MARAIS TO TACONITE HARBOR MN-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH THIS EVENING...  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN  
THE LATE MORNING AND AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FEET.    
TONIGHT
 
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 25 KNOTS.  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS AFTER MIDNIGHT. WAVES  
1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST LATE IN THE  
AFTERNOON. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE  
DAY. WAVES 1 TO 2 FEET.    
FRIDAY NIGHT
 
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.  
 

 
 
LSZ142-061600-  
TACONITE HARBOR TO SILVER BAY HARBOR MN-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH THIS EVENING...  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.    
TONIGHT
 
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS  
UNTIL EARLY MORNING. PARTLY CLOUDY. WAVES 1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 5 KNOTS. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS THROUGH THE DAY. WAVES 1 TO 2 FEET.    
FRIDAY NIGHT
 
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.  
 

 
 
LSZ143-061600-  
SILVER BAY HARBOR TO TWO HARBORS MN-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH THIS EVENING...  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.    
TONIGHT
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. PARTLY CLOUDY. WAVES 1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS. SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS. WAVES 1 TO 2 FEET.    
FRIDAY NIGHT
 
NORTHWEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.  
 

 
 
LSZ144-061600-  
TWO HARBORS TO DULUTH MN-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH THIS EVENING...  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.  
SUNNY. WAVES 1 TO 2 FEET.    
TONIGHT
 
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS BECOMING WEST LATE IN THE AFTERNOON. CHANCE OF SHOWERS  
AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 2 FEET.    
FRIDAY NIGHT
 
NORTHWEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.  
 

 
 
LSZ145-061600-  
DULUTH MN TO PORT WING WI-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH THIS EVENING...  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 25 KNOTS.  
SUNNY. WAVES 1 TO 2 FEET.    
TONIGHT
 
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS BECOMING WEST 5 TO 10 KNOTS LATE IN THE AFTERNOON.  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO  
2 FEET.    
FRIDAY NIGHT
 
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.  
 

 
 
LSZ146-061600-  
PORT WING TO SAND ISLAND WI-  
407 AM CDT THU AUG 6 2026  
 
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING  
THROUGH THIS EVENING...  
   
TODAY
 
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 TO 2 FEET.    
TONIGHT
 
SOUTHWEST WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS EASING TO 10 KNOTS WITH GUSTS TO AROUND 20 KNOTS EARLY  
IN THE MORNING. MOSTLY CLEAR. WAVES 1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN  
THE MORNING. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. WAVES 1 TO 2 FEET.    
FRIDAY NIGHT
 
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR  
LESS.  
 

 
 
LSZ147-061600-  
SAND ISLAND TO BAYFIELD WI-  
407 AM CDT THU AUG 6 2026  
   
TODAY
 
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS BECOMING WEST IN THE  
AFTERNOON. CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS.  
WAVES 1 FOOT OR LESS.    
FRIDAY NIGHT
 
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR  
LESS.  
 

 
 
LSZ150-061600-  
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND-  
407 AM CDT THU AUG 6 2026  
   
TODAY
 
SOUTHWEST WIND 5 TO 10 KNOTS. GUSTS UP TO 20 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTH WIND 10 TO 15 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY CLEAR. WAVES 1 TO 2 FEET.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS BECOMING WEST IN THE AFTERNOON. CHANCE OF SHOWERS AND  
SLIGHT CHANCE OF THUNDERSTORMS. WAVES 1 TO 2 FEET.    
FRIDAY NIGHT
 
WEST WIND 5 TO 10 KNOTS. MOSTLY CLEAR. WAVES  
1 FOOT OR LESS.  
 

 
 
LSZ121-061600-  
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI-  
407 AM CDT THU AUG 6 2026  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTH WIND 10 TO 15 KNOTS BECOMING SOUTHWEST 5 TO  
10 KNOTS IN THE LATE EVENING AND OVERNIGHT. GUSTS UP TO 20 KNOTS.  
MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS BECOMING WEST IN THE AFTERNOON. SLIGHT CHANCE OF SHOWERS  
AND THUNDERSTORMS IN THE MORNING. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.    
FRIDAY NIGHT
 
WEST WIND 5 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR  
LESS.  
 

 
 
LSZ148-061600-  
OAK POINT TO SAXON HARBOR WI-  
407 AM CDT THU AUG 6 2026  
   
TODAY
 
SOUTHWEST WIND 10 TO 15 KNOTS. GUSTS UP TO 20 KNOTS IN  
THE LATE MORNING AND AFTERNOON. SUNNY. WAVES 1 FOOT OR LESS.    
TONIGHT
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS. MOSTLY CLEAR. WAVES 1 FOOT OR LESS.    
FRIDAY
 
SOUTHWEST WIND 5 TO 10 KNOTS WITH GUSTS TO AROUND  
20 KNOTS BECOMING WEST IN THE AFTERNOON. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON. WAVES 1 FOOT OR LESS.    
FRIDAY NIGHT
 
WEST WIND 5 KNOTS. PARTLY CLOUDY. WAVES 1 FOOT OR  
LESS.  
 

 
 
GRAPHICAL MARINE FORECASTS ARE AVAILABLE ONLINE AT:  
WEATHER.GOV/GREATLAKES  
 
WFO DLH  
 
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