777  
FZUS53 KLOT 131438  
NSHLOT  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
938 AM CDT TUE MAY 13 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>742-132115-  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
938 AM CDT TUE MAY 13 2025  
   
..DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT WEDNESDAY
 
 
   
REST OF TODAY
 
EAST WINDS AROUND 10 KT BECOMING NORTHEAST 10 TO  
15 KT IN THE AFTERNOON. AREAS OF DENSE FOG. ISOLATED SHOWERS IN  
THE AFTERNOON. WAVES 1 TO 2 FT.   
TONIGHT
 
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 5 TO 10 KT  
OVERNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS IN THE EVENING.  
AREAS OF DENSE FOG. WAVES AROUND 1 FT.    
WEDNESDAY
 
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST IN THE  
AFTERNOON. AREAS OF DENSE FOG IN THE MORNING, THEN PATCHY FOG IN  
THE AFTERNOON. ISOLATED SHOWERS IN THE MORNING, THEN SCATTERED  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES AROUND 1 FT.    
WEDNESDAY NIGHT
 
EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST  
OVERNIGHT. PATCHY FOG. WAVES AROUND 1 FT.  
 

 
 
LMZ743>745-132115-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
938 AM CDT TUE MAY 13 2025  
   
..DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT WEDNESDAY
 
 
   
REST OF TODAY
 
EAST WINDS 5 TO 10 KT BECOMING NORTHEAST 10 TO  
15 KT IN THE AFTERNOON. PATCHY DENSE FOG. SCATTERED SHOWERS WITH  
ISOLATED THUNDERSTORMS IN THE AFTERNOON. WAVES AROUND 1 FT.    
TONIGHT
 
NORTHEAST WINDS 10 TO 15 KT BECOMING NORTH 5 TO 10 KT  
OVERNIGHT. ISOLATED SHOWERS AND THUNDERSTORMS IN THE EVENING.  
AREAS OF DENSE FOG. WAVES AROUND 1 FT.    
WEDNESDAY
 
NORTH WINDS 5 TO 10 KT BECOMING NORTHEAST IN THE  
AFTERNOON. AREAS OF DENSE FOG IN THE MORNING, THEN PATCHY FOG IN  
THE AFTERNOON. ISOLATED SHOWERS IN THE MORNING, THEN SCATTERED  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES AROUND 1 FT.    
WEDNESDAY NIGHT
 
EAST WINDS 5 TO 10 KT BECOMING SOUTHEAST  
OVERNIGHT. PATCHY FOG. WAVES AROUND 1 FT.  
 

 
KJB  
 
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