981  
FZUS53 KLOT 111359  
NSHLOT  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
859 AM CDT THU SEP 11 2025  
 
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN  
 
WAVES ARE PROVIDED AS A RANGE OF SIGNIFICANT WAVE HEIGHTS, WHICH  
IS THE AVERAGE OF THE HIGHEST 1/3 OF THE WAVES, ALONG WITH THE  
AVERAGE HEIGHT OF THE HIGHEST 10 PERCENT OF THE WAVES WHICH WILL  
OCCASIONALLY BE ENCOUNTERED.  
 
LMZ740>742-112115-  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
859 AM CDT THU SEP 11 2025  
   
REST OF TODAY
 
NORTHEAST WINDS 5 TO 10 KT. MOSTLY SUNNY. WAVES  
1 TO 2 FT.    
TONIGHT
 
NORTHEAST WINDS 5 TO 10 KT. BECOMING PARTLY CLOUDY.  
WAVES 1 TO 2 FT.    
FRIDAY
 
EAST WINDS 5 TO 10 KT. MOSTLY SUNNY. WAVES 1 TO 2 FT.    
FRIDAY NIGHT
 
SOUTHEAST WINDS AROUND 10 KT BECOMING SOUTH  
OVERNIGHT. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS OVERNIGHT.  
WAVES 1 TO 2 FT.  
 

 
 
LMZ743>745-112115-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
859 AM CDT THU SEP 11 2025  
   
REST OF TODAY
 
EAST WINDS 5 TO 10 KT. MOSTLY SUNNY. WAVES 1 TO  
2 FT.   
TONIGHT
 
NORTHEAST WINDS 5 TO 10 KT BECOMING EAST OVERNIGHT.  
A FEW CLOUDS. WAVES 1 TO 2 FT.    
FRIDAY
 
SOUTHEAST WINDS 5 TO 10 KT BECOMING NORTHEAST IN THE  
AFTERNOON. MOSTLY SUNNY. WAVES 1 TO 2 FT.    
FRIDAY NIGHT
 
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH 10 TO 15  
KT OVERNIGHT. MOSTLY CLEAR IN THE EVENING, THEN BECOMING MOSTLY  
CLOUDY. WAVES 1 TO 2 FT.  
 

 
 
BORCHARDT  
 
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