394  
WHUS73 KLOT 120846  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
346 AM CDT TUE MAY 12 2026  
 
LMZ740>742-121700-  
/O.CON.KLOT.SC.Y.0056.260512T1400Z-260514T0000Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
346 AM CDT TUE MAY 12 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING  
TO 7 PM CDT WEDNESDAY...  
 
* WHAT...SOUTHWEST WINDS TO 30 KT WITH A FEW GALE FORCE GUSTS TO  
35KT BECOMING NORTHWEST TO 25 KT EXPECTED.  
 
* WHERE...WINTHROP HARBOR TO CALUMET HARBOR IL.  
 
* WHEN...FROM 9 AM THIS MORNING 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>745-121700-  
/O.CON.KLOT.SC.Y.0056.260512T1400Z-260514T0600Z/  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
346 AM CDT TUE MAY 12 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 AM THIS MORNING  
TO 1 AM CDT THURSDAY...  
 
* WHAT...SOUTHWEST WINDS TO 30 KT WITH A FEW GALE FORCE GUSTS TO  
35KT BECOMING NORTHWEST TO 25 KT EXPECTED.  
 
* WHERE...CALUMET HARBOR IL TO MICHIGAN CITY IN.  
 
* WHEN...FROM 9 AM THIS MORNING TO 1 AM 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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