486
WHUS73 KLOT 111550
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
950 AM CST Tue Nov 11 2025

LMZ740>742-120000-
/O.CON.KLOT.SC.Y.0100.000000T0000Z-251113T0300Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
950 AM CST Tue Nov 11 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST
WEDNESDAY...

* WHAT...West-southwest winds to 30 kt with a few gale force
  gusts to 35 kt and significant waves to 5 ft expected.

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

* WHEN...Until 9 PM CST Wednesday.

* 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>745-120000-
/O.CON.KLOT.SC.Y.0099.000000T0000Z-251113T0900Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
950 AM CST Tue Nov 11 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CST
THURSDAY...

* WHAT...West-southwest winds to 30 kt with a few gale force gusts
  to 35 kt and significant waves to 7 ft occasionally to 9 ft
  expected.

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

* WHEN...Until 3 AM CST 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.

&&

$$