474  
FZUS53 KLOT 231447  
NSHLOT  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
ISSUED BY NATIONAL WEATHER SERVICE LINCOLN IL  
947 AM CDT WED APR 23 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>742-232130-  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
947 AM CDT WED APR 23 2025  
   
REST OF TODAY  
SOUTHEAST WINDS 10 TO 15 KT LATE IN THE MORNING  
DIMINISHING TO AROUND 10 KT IN THE AFTERNOON. CHANCE OF SHOWERS  
AND SLIGHT CHANCE OF THUNDERSTORMS LATE IN THE MORNING, THEN  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. WAVES  
1 TO 2 FT.    
TONIGHT  
SOUTH WINDS 5 TO 10 KT BECOMING SOUTHWEST OVERNIGHT.  
MOSTLY CLOUDY. WAVES AROUND 1 FT.    
THURSDAY  
NORTHEAST WINDS 5 TO 10 KT BECOMING NORTH 10 TO  
15 KT. MOSTLY CLOUDY. WAVES 1 TO 2 FT.    
THURSDAY NIGHT  
NORTH WINDS 10 TO 15 KT BECOMING NORTHEAST 5 TO  
10 KT OVERNIGHT. SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN  
CHANCE OF SHOWERS OVERNIGHT. WAVES 2 TO 4 FT.  
 
 
 
LMZ743>745-232130-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
947 AM CDT WED APR 23 2025  
   
REST OF TODAY  
SOUTHEAST WINDS 10 TO 20 KT BECOMING NORTHEAST  
AND DIMINISHING TO AROUND 10 KT. SHOWERS LIKELY AND SLIGHT CHANCE  
OF THUNDERSTORMS LATE IN THE MORNING. WAVES AROUND 1 FT.    
TONIGHT  
SOUTHEAST WINDS 5 TO 10 KT BECOMING SOUTH. PARTLY  
CLOUDY. WAVES AROUND 1 FT.    
THURSDAY  
EAST WINDS LESS THAN 10 KT BECOMING NORTH 10 TO 15 KT  
IN THE AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING  
PARTLY CLOUDY. WAVES 1 FT OR LESS BUILDING TO 1 TO 2 FT.    
THURSDAY NIGHT  
NORTHEAST WINDS 5 TO 10 KT BECOMING SOUTHEAST  
OVERNIGHT. SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN CHANCE  
OF SHOWERS OVERNIGHT. WAVES 1 TO 3 FT.  
 
 
 
NWS LINCOLN  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab IL Page
The Nexlab IN Page
Main Text Page