910  
WHUS73 KLOT 301416  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
916 AM CDT MON MAR 30 2026  
 
LMZ740>742-302230-  
/O.CON.KLOT.SC.Y.0036.260331T1200Z-260402T0000Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
916 AM CDT MON MAR 30 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO  
7 PM CDT WEDNESDAY...  
 
* WHAT...SOUTHWEST WINDS TO 30 KT TUESDAY SHIFTING NORTHEAST  
TUESDAY EVENING AND SIGNIFICANT WAVES TO 8 FT OCCASIONALLY TO  
10 FT EXPECTED.  
 
* WHERE...WINTHROP HARBOR TO CALUMET HARBOR IL.  
 
* WHEN...FROM 7 AM TUESDAY TO 7 PM CDT WEDNESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
LMZ743>745-302230-  
/O.CON.KLOT.SC.Y.0036.260331T1200Z-260402T0000Z/  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
916 AM CDT MON MAR 30 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM TUESDAY TO  
7 PM CDT WEDNESDAY...  
 
* WHAT...SOUTHWEST WINDS TO 30 KT TUESDAY SHIFTING NORTHEAST  
TUESDAY EVENING AND SIGNIFICANT WAVES TO 8 FT OCCASIONALLY TO  
10 FT EXPECTED.  
 
* WHERE...CALUMET HARBOR IL TO MICHIGAN CITY IN.  
 
* WHEN...FROM 7 AM TUESDAY TO 7 PM CDT WEDNESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
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