272  
WHUS73 KLOT 130840  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
340 AM CDT WED MAY 13 2026  
 
LMZ740>742-131645-  
/O.CON.KLOT.SC.Y.0056.000000T0000Z-260514T0000Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
340 AM CDT WED MAY 13 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS  
EVENING...  
 
* WHAT...NORTH WINDS TO 25 KT AND SIGNIFICANT WAVES TO 4 FT.  
 
* WHERE...WINTHROP HARBOR TO CALUMET HARBOR IL.  
 
* WHEN...UNTIL 7 PM CDT THIS EVENING.  
 
* 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>745-131645-  
/O.CON.KLOT.SC.Y.0056.000000T0000Z-260514T0600Z/  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
340 AM CDT WED MAY 13 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT  
THURSDAY...  
 
* WHAT...NORTH WINDS TO 25 KT AND SIGNIFICANT WAVES TO 6 FT.  
 
* WHERE...CALUMET HARBOR IL TO MICHIGAN CITY IN.  
 
* WHEN...UNTIL 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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