663  
WHUS73 KLOT 131122  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
622 AM CDT TUE MAY 13 2025  
 
LMZ742>745-131930-  
/O.EXA.KLOT.MF.Y.0004.000000T0000Z-250514T1800Z/  
NORTHERLY ISLAND TO CALUMET HARBOR IL-  
CALUMET HARBOR IL TO GARY IN-GARY TO BURNS HARBOR IN-  
BURNS HARBOR TO MICHIGAN CITY IN-  
622 AM CDT TUE MAY 13 2025  
   
..DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT WEDNESDAY  
 
* WHAT...DENSE FOG WILL REDUCE VISIBILITY TO 1/2 NM OR LESS.  
 
* WHERE...CALUMET HARBOR IL TO MICHIGAN CITY IN, AND NORTHERLY  
ISLAND TO CALUMET HARBOR IL.  
 
* WHEN...UNTIL 1 PM CDT WEDNESDAY.  
 
* IMPACTS...LOW VISIBILITY WILL MAKE NAVIGATION DIFFICULT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG  
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE  
YOUR RADAR AND COMPASS.  
 
 
 
 
 
LMZ740-741-131930-  
/O.CON.KLOT.MF.Y.0004.000000T0000Z-250514T1800Z/  
WINTHROP HARBOR TO WILMETTE HARBOR IL-  
WILMETTE HARBOR TO NORTHERLY ISLAND IL-  
622 AM CDT TUE MAY 13 2025  
 
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT  
WEDNESDAY...  
 
* WHAT...DENSE FOG WILL REDUCE VISIBILITY TO 1/2 NM OR LESS.  
 
* WHERE...WINTHROP HARBOR TO NORTHERLY ISLAND IL.  
 
* WHEN...UNTIL 1 PM CDT WEDNESDAY.  
 
* IMPACTS...LOW VISIBILITY WILL MAKE NAVIGATION DIFFICULT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG  
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE  
YOUR RADAR AND COMPASS.  
 
 
 
 
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