020  
WHUS73 KLOT 200944  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
344 AM CST FRI DEC 20 2024  
 
LMZ740>742-201745-  
/O.CON.KLOT.SC.Y.0107.000000T0000Z-241221T1500Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
344 AM CST FRI DEC 20 2024  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST  
SATURDAY...  
 
* WHAT...NORTH WINDS TO 30 KT. OCCASIONAL GALE GUSTS TO 35 KT.  
SIGNIFICANT WAVES TO 10 FT OCCASIONALLY TO 13 FT EXPECTED.  
 
* WHERE...WINTHROP HARBOR TO CALUMET HARBOR IL.  
 
* WHEN...UNTIL 9 AM CST SATURDAY.  
 
* 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>745-201745-  
/O.CON.KLOT.SC.Y.0107.241220T1200Z-241221T2100Z/  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
344 AM CST FRI DEC 20 2024  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST  
SATURDAY...  
 
* WHAT...NORTH WINDS TO 30 KT. OCCASIONAL GALE GUSTS TO 35 KT.  
SIGNIFICANT WAVES TO 11 FT OCCASIONALLY TO 14 FT EXPECTED.  
 
* WHERE...CALUMET HARBOR IL TO MICHIGAN CITY IN.  
 
* WHEN...UNTIL 3 PM CST SATURDAY.  
 
* 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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