432  
WHUS73 KLOT 190200  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
900 PM CDT SUN MAY 18 2025  
 
LMZ740>742-191000-  
/O.CON.KLOT.SC.Y.0062.250519T0600Z-250522T2000Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
900 PM CDT SUN MAY 18 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM MONDAY TO  
3 PM CDT THURSDAY...  
 
* WHAT...NORTHEAST WINDS TO 30 KT AND SIGNIFICANT WAVES TO 9 FT  
OCCASIONALLY TO 12 FT EXPECTED.  
 
* WHERE...WINTHROP HARBOR TO CALUMET HARBOR, IL.  
 
* WHEN...FROM 1 AM MONDAY TO 3 PM CDT THURSDAY.  
 
* 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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