945
WHUS73 KLOT 032115
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
315 PM CST Wed Dec 3 2025

LMZ740>743-040515-
/O.CON.KLOT.SC.Y.0107.251204T0300Z-251204T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
315 PM CST Wed Dec 3 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 9 AM CST THURSDAY...

* WHAT...Winds shifting to northwest to 25 kt and significant
  waves to 6 ft occasionally to 8 ft expected.

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

* WHEN...From 9 PM this evening to 9 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.

&&

$$

LMZ744-745-040515-
/O.CON.KLOT.SC.Y.0106.000000T0000Z-251204T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
315 PM CST Wed Dec 3 2025

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

* WHAT...Winds shifting to northwest to 25 kt and significant
  waves building to 8 ft occasionally to 10 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 3 PM 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.

&&

$$