WHUS73 KLOT 200247
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
947 PM CDT Tue May 19 2026

LMZ740>742-201100-
/O.CON.KLOT.SC.Y.0060.260520T1500Z-260521T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
947 PM CDT Tue May 19 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM WEDNESDAY TO
4 AM CDT THURSDAY...

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

* WHERE...Winthrop Harbor to Calumet Harbor IL.

* WHEN...From 10 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.

&&

$$

LMZ743>745-201100-
/O.CON.KLOT.SC.Y.0060.260520T1200Z-260521T0900Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
947 PM CDT Tue May 19 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM WEDNESDAY TO
4 AM CDT THURSDAY...

* WHAT...North to northeast winds to 25 kt and significant waves 
  to 7 ft occasionally to 9 ft expected.

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

* WHEN...From 7 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.

&&

$$