346  
FZUS53 KLOT 300255  
NSHLOT  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
955 PM CDT SAT MAR 29 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>742-300915-  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
955 PM CDT SAT MAR 29 2025  
   
REST OF TONIGHT  
NORTHEAST WINDS 10 TO 15 KT BECOMING SOUTHEAST  
LATE. AREAS OF FOG. CHANCE OF SHOWERS LATE IN THE EVENING, THEN  
SLIGHT CHANCE OF SHOWERS AFTER MIDNIGHT. WAVES 2 TO 4 FT.    
SUNDAY  
SOUTH WINDS 15 TO 25 KT. PATCHY FOG IN THE MORNING.  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN SHOWERS  
WITH THUNDERSTORMS LIKELY IN THE AFTERNOON. WAVES 2 TO 4 FT.    
SUNDAY NIGHT  
WEST WINDS 15 TO 25 KT BECOMING NORTHWEST  
OVERNIGHT. RAIN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN  
THE EVENING, THEN CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES  
2 TO 4 FT BUILDING TO 3 TO 5 FT.    
MONDAY  
NORTH WINDS 20 TO 25 KT. MOSTLY CLOUDY. WAVES 4 TO 6 FT  
OCCASIONALLY TO 8 FT. A SMALL CRAFT ADVISORY WILL LIKELY BE  
NEEDED.  
 
 
 
LMZ743>745-300915-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
955 PM CDT SAT MAR 29 2025  
   
REST OF TONIGHT  
SOUTH WINDS 10 TO 20 KT. CHANCE OF SHOWERS.  
WAVES 1 TO 3 FT.    
SUNDAY  
SOUTH WINDS 15 TO 25 KT. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE MORNING, THEN SHOWERS WITH THUNDERSTORMS  
LIKELY IN THE AFTERNOON. WAVES 1 TO 3 FT BUILDING TO 2 TO 4 FT.    
SUNDAY NIGHT  
SOUTHWEST WINDS 15 TO 25 KT BECOMING NORTHWEST  
OVERNIGHT. RAIN SHOWERS AND THUNDERSTORMS LIKELY IN THE EVENING,  
THEN CHANCE OF RAIN AND SNOW SHOWERS OVERNIGHT. WAVES 2 TO 4 FT  
BUILDING TO 3 TO 5 FT.    
MONDAY  
NORTH WINDS TO 30 KT. MOSTLY CLOUDY. WAVES 5 TO 8 FT  
OCCASIONALLY TO 10 FT BUILDING TO 6 TO 9 FT OCCASIONALLY TO  
12 FT. A SMALL CRAFT ADVISORY WILL LIKELY BE NEEDED.  
 
 
 
YACK  
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