180
WHUS73 KLOT 180915
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
415 AM CDT Sat Oct 18 2025

LMZ740>743-181715-
/O.UPG.KLOT.GL.A.0017.251019T1200Z-251020T0300Z/
/O.NEW.KLOT.GL.W.0024.251019T1200Z-251020T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
415 AM CDT Sat Oct 18 2025

...GALE WARNING IN EFFECT FROM 7 AM TO 7 PM CDT SUNDAY...

* WHAT...Northwest gales to 35 kt and significant waves to 8 ft
  occasionally to 10 ft expected.

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

* WHEN...From 7 AM to 7 PM CDT Sunday.

* 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.

&&

$$

LMZ744-745-181715-
/O.UPG.KLOT.GL.A.0017.251019T1200Z-251020T0300Z/
/O.NEW.KLOT.GL.W.0024.251019T1200Z-251020T0300Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
415 AM CDT Sat Oct 18 2025

...GALE WARNING IN EFFECT FROM 7 AM TO 10 PM CDT SUNDAY...

* WHAT...Northwest gales to 40 kt and significant waves to 14 ft
  occasionally to 18 ft expected.

* WHERE...Gary to Michigan City, IN.

* WHEN...From 7 AM to 10 PM CDT Sunday.

* 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.

&&

$$