Marine Weather Message
Issued by NWS Chicago, IL

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712
WHUS73 KLOT 250938
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
338 AM CST Tue Nov 25 2025

LMZ740>745-251745-
/O.UPG.KLOT.GL.A.0019.251126T0900Z-251128T0000Z/
/O.NEW.KLOT.GL.W.0028.251126T0900Z-251128T0400Z/
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-
338 AM CST Tue Nov 25 2025

...GALE WARNING IN EFFECT FROM 3 AM WEDNESDAY TO 10 PM CST
THURSDAY...

* WHAT...West winds to 45 kt, with a few storm force gusts to 50
  kt possible, and significant waves to 11 ft occasionally to 14
  ft expected.

* WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL
  to Michigan City IN.

* WHEN...From 3 AM Wednesday to 10 PM CST Thursday.

* 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.

&&

$$