646  
WHUS73 KLOT 310813  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
313 AM CDT MON MAR 31 2025  
 
LMZ740>745-311615-  
/O.CON.KLOT.SC.Y.0040.000000T0000Z-250401T0900Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
313 AM CDT MON MAR 31 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 AM CDT  
TUESDAY...  
 
* WHAT...NORTH WINDS TO 25 KT AND SIGNIFICANT WAVES TO 9 FT  
OCCASIONALLY TO 12 FT EXPECTED.  
 
* WHERE...ILLINOIS AND INDIANA NEARSHORE FROM WINTHROP HARBOR IL  
TO MICHIGAN CITY IN.  
 
* WHEN...UNTIL 4 AM CDT TUESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
* ADDITIONAL DETAILS...HIGHEST WAVES EXPECTED EAST OF GARY, IN.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 
 
 
 
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