739
WHUS73 KLOT 200138
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
838 PM CDT Tue Aug 19 2025

LMZ740>745-200945-
/O.CON.KLOT.SC.Y.0077.250820T0600Z-250821T0900Z/
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-
838 PM CDT Tue Aug 19 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 1 AM WEDNESDAY TO
4 AM CDT THURSDAY...

* WHAT...North to northeast up to 25 kt and significant waves to
  6 ft occasionally to 8 ft expected.

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

* WHEN...From 1 AM Wednesday to 4 AM CDT Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$