530  
WHUS73 KLOT 301442  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
942 AM CDT WED JUL 30 2025  
 
LMZ740>745-302245-  
/O.CON.KLOT.SC.Y.0074.250730T1800Z-250801T1400Z/  
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-  
942 AM CDT WED JUL 30 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 PM THIS  
AFTERNOON TO 9 AM CDT FRIDAY...  
 
* WHAT...NORTHEAST WINDS TO 30 KT WITH A FEW GALE FORCE GUSTS TO  
35 KT AND SIGNIFICANT WAVES TO 7 FT OCCASIONALLY TO 9 FT  
EXPECTED.  
 
* WHERE...ILLINOIS AND INDIANA NEARSHORE FROM WINTHROP HARBOR IL  
TO MICHIGAN CITY IN.  
 
* WHEN...FROM 1 PM THIS AFTERNOON TO 9 AM CDT FRIDAY.  
 
* 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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