WHUS73 KLOT 272017

MWWLOT



URGENT - MARINE WEATHER MESSAGE

National Weather Service Chicago IL

317 PM CDT Mon Oct 27 2025



LMZ743>745-280430-

/O.EXB.KLOT.SC.Y.0094.251029T0000Z-251101T0900Z/

Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-

Burns Harbor to Michigan City IN-

317 PM CDT Mon Oct 27 2025



...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM TUESDAY TO 4 AM CDT

SATURDAY...



* WHAT...North winds to 25 kt and significant waves to 8 ft 

  occasionally to 10 ft expected.



* WHERE...Calumet Harbor IL to Michigan City IN.



* WHEN...From 7 PM Tuesday to 4 AM CDT Saturday.



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





PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$



LMZ740-280430-

/O.EXT.KLOT.SC.Y.0094.000000T0000Z-251031T1200Z/

Winthrop Harbor to Wilmette Harbor IL-

317 PM CDT Mon Oct 27 2025



...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 AM CDT FRIDAY...



* WHAT...East winds to 30 kt and significant waves to 12 ft 

  occasionally to 16 ft expected.



* WHERE...Winthrop Harbor to Wilmette Harbor IL.



* WHEN...Until 7 AM CDT Friday.



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



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$



LMZ741-742-280430-

/O.EXT.KLOT.SC.Y.0094.000000T0000Z-251031T1200Z/

Wilmette Harbor to Northerly Island IL-

Northerly Island to Calumet Harbor IL-

317 PM CDT Mon Oct 27 2025



...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 AM CDT FRIDAY...



* WHAT...East winds to 30 kt and significant waves to 11 ft 

  occasionally to 14 ft expected.



* WHERE...Wilmette Harbor to Calumet Harbor IL.



* WHEN...Until 7 AM CDT Friday.



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



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Inexperienced mariners, especially those operating smaller

vessels, should avoid navigating in hazardous conditions.



&&



$$