WHUS73 KLOT 170556
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1256 AM CDT Sat Oct 17 2026

LMZ740>742-171400-
/O.EXP.KLOT.GL.W.0021.000000T0000Z-261017T0600Z/
/O.CON.KLOT.SC.Y.0090.261017T0600Z-261017T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1256 AM CDT Sat Oct 17 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...
...GALE WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING...

* WHAT...North winds to 30 kt and significant waves to 12 ft 
  occasionally to 16 ft expected.

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

* WHEN...Until 10 AM CDT this morning.

* 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>745-171400-
/O.EXP.KLOT.GL.W.0021.000000T0000Z-261017T0600Z/
/O.CON.KLOT.SC.Y.0090.261017T0600Z-261017T2000Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1256 AM CDT Sat Oct 17 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT THIS
AFTERNOON...
...GALE WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING...

* WHAT...Northeast winds to 30 kt and significant waves to 14 ft 
  occasionally to 18 ft expected.

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

* WHEN...Until 3 PM CDT this afternoon.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$