547
WHUS73 KLOT 162057
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
257 PM CST Sun Nov 16 2025

LMZ740>743-170400-
/O.CON.KLOT.SC.Y.0101.000000T0000Z-251117T0400Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
257 PM CST Sun Nov 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CST THIS
EVENING...

* WHAT...Northwest winds to 25 kt and significant waves to 5 ft
  occurring.

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

* WHEN...Until 10 PM CST this evening.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ744-745-170500-
/O.CON.KLOT.SC.Y.0101.000000T0000Z-251117T1500Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
257 PM CST Sun Nov 16 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST MONDAY...

* WHAT...Northwest winds to 25 kt and significant waves to 8 ft
  occasionally to 10 ft occurring.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 9 AM CST Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$