570  
WHUS73 KLOT 012019  
MWWLOT  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE CHICAGO IL  
319 PM CDT TUE APR 1 2025  
 
LMZ740>745-020430-  
/O.CON.KLOT.SC.Y.0041.250402T0000Z-250402T0600Z/  
/O.CON.KLOT.GL.W.0013.250402T0600Z-250402T2300Z/  
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-  
319 PM CDT TUE APR 1 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING  
TO 1 AM CDT WEDNESDAY...  
...GALE WARNING REMAINS IN EFFECT FROM 1 AM TO 6 PM CDT  
WEDNESDAY...  
 
* WHAT...FOR THE SMALL CRAFT ADVISORY, EAST WINDS TO 30 KT AND  
SIGNIFICANT WAVES TO 6 FT OCCASIONALLY TO 8 FT EXPECTED. FOR THE  
GALE WARNING, EAST GALES TO 35 KT BECOMING SOUTHWEST WEDNESDAY  
AFTERNOON AND SIGNIFICANT WAVES TO 11 FT OCCASIONALLY TO 14 FT  
EXPECTED.  
 
* WHERE...WINTHROP HARBOR TO CALUMET HARBOR IL.  
 
* WHEN...FOR THE SMALL CRAFT ADVISORY, FROM 7 PM THIS EVENING TO  
1 AM CDT WEDNESDAY. FOR THE GALE WARNING, FROM 1 AM TO 6 PM  
CDT WEDNESDAY.  
 
* IMPACTS...STRONG WINDS WILL CAUSE HAZARDOUS WAVES WHICH COULD  
CAPSIZE OR DAMAGE VESSELS AND REDUCE VISIBILITY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
MARINERS SHOULD ALTER PLANS TO AVOID THESE HAZARDOUS CONDITIONS.  
REMAIN IN PORT, SEEK SAFE HARBOR, ALTER COURSE, AND/OR SECURE THE  
VESSEL FOR HAZARDOUS CONDITIONS.  
 

 
 

 
 
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