WHUS73 KLOT 121542

MWWLOT



URGENT - MARINE WEATHER MESSAGE

National Weather Service Chicago IL

942 AM CST Fri Dec 12 2025



LMZ744-745-122345-

/O.CON.KLOT.SC.Y.0112.251213T0300Z-251215T0300Z/

Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-

942 AM CST Fri Dec 12 2025



...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING

TO 9 PM CST SUNDAY...



* WHAT...Northwest winds to 30 kt and significant waves to 10 ft 

  occasionally to 13 ft expected.



* WHERE...Gary to Michigan City IN.



* WHEN...From 9 PM this evening to 9 PM CST Sunday.



* IMPACTS...Conditions will be hazardous to small craft.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$



LMZ740>743-122345-

/O.CON.KLOT.SC.Y.0112.251213T0300Z-251214T1800Z/

Winthrop Harbor to Wilmette Harbor IL-

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

Calumet Harbor IL to Gary IN-

942 AM CST Fri Dec 12 2025



...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING

TO NOON CST SUNDAY...



* WHAT...Northwest winds to 25 kt and significant waves to 6 ft 

  expected.



* WHERE...Winthrop Harbor IL to Gary IN.



* WHEN...From 9 PM this evening to noon CST Sunday.



* IMPACTS...Conditions will be hazardous to small craft.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$