869  
FZUS53 KLOT 311959  
NSHLOT  
 
NEARSHORE MARINE FORECAST  
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL  
259 PM CDT MON MAR 31 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>742-010315-  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
259 PM CDT MON MAR 31 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT  
 
...GALE WATCH IN EFFECT FROM TUESDAY EVENING THROUGH WEDNESDAY  
MORNING...  
   
TONIGHT  
NORTH WINDS 15 TO 20 KT DIMINISHING TO 10 TO 15 KT AND  
BECOMING NORTHEAST BY EVENING. PARTLY CLOUDY. WAVES 3 TO 6 FT  
OCCASIONALLY TO 8 FT SUBSIDING TO 2 TO 4 FT.   
TUESDAY  
EAST WINDS 10 TO 15 KT GRADUALLY INCREASING TO 15 TO  
25 KT BY LATE AFTERNOON. SLIGHT CHANCE OF RAIN AND SNOW SHOWERS  
LATE AFTERNOON. WAVES 2 TO 4 FT.   
TUESDAY NIGHT  
EAST WINDS TO 30 KT BECOMING SOUTHEAST AND  
INCREASING TO 35 KT GALES. CHANCE OF SHOWERS IN THE EVENING, THEN  
SHOWERS AND SCATTERED THUNDERSTORMS OVERNIGHT. WAVES 4 TO 6 FT  
OCCASIONALLY TO 8 FT BUILDING TO 7 TO 10 FT OCCASIONALLY TO  
13 FT.  
.WEDNESDAY...SOUTHEAST GALES TO 35 KT EARLY, BECOMING SOUTH AND  
EASING TO 30 KT WINDS IN THE AFTERNOON. RAIN SHOWERS AND  
SCATTERED THUNDERSTORMS. WAVES 7 TO 10 FT OCCASIONALLY TO 13 FT  
SUBSIDING TO 5 TO 8 FT OCCASIONALLY TO 10 FT.  
 
 
 
LMZ743>745-010315-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
259 PM CDT MON MAR 31 2025  
   
..SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT  
 
   
TONIGHT  
NORTH WINDS 15 TO 20 KT BECOMING NORTHEAST 10 TO 15 KT  
LATE. PARTLY CLOUDY. WAVES 4 TO 7 FT OCCASIONALLY TO 9 FT SUBSIDING  
TO 3 TO 5 FT.    
TUESDAY  
EAST WINDS 10 TO 15 KT INCREASING TO 10 TO 20 KT IN THE  
AFTERNOON. MOSTLY SUNNY IN THE MORNING, THEN BECOMING MOSTLY  
CLOUDY. WAVES 2 TO 4 FT SUBSIDING TO 1 TO 3 FT.    
TUESDAY NIGHT  
SOUTHEAST WINDS TO 30 KT. OCCASIONAL GALE FORCE  
GUSTS POSSIBLE. SLIGHT CHANCE OF SHOWERS IN THE EVENING, THEN  
NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS OVERNIGHT. WAVES 2 TO  
4 FT BUILDING TO 3 TO 5 FT.    
WEDNESDAY  
SOUTHEAST WINDS TO 30 KT BECOMING SOUTH IN THE  
AFTERNOON. A FEW GALE FORCE GUSTS POSSIBLE IN THE MORNING. SHOWERS  
AND SCATTERED THUNDERSTORMS. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4  
FT.  
 
 
 
RATZER  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab IL Page
The Nexlab IN Page
Main Text Page