621
WHUS73 KLOT 070957
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
357 AM CST Sun Dec 7 2025

LMZ740>742-071800-
/O.CON.KLOT.SC.Y.0109.251207T1400Z-251208T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
357 AM CST Sun Dec 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 AM THIS MORNING
TO 9 AM CST MONDAY...

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

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

* WHEN...From 8 AM this morning to 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.

&&

$$

LMZ743>745-071800-
/O.CON.KLOT.SC.Y.0109.251207T1700Z-251208T1500Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
357 AM CST Sun Dec 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING
TO 9 AM CST MONDAY...

* WHAT...North to northeast winds to 25 kt and significant waves
  to 8 ft occasionally to 10 ft expected.

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

* WHEN...From 11 AM this morning to 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.

&&

$$