Marine Weather Message
Issued by NWS Chicago, IL

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314
WHUS73 KLOT 040141
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
841 PM CDT Wed Sep 3 2025

LMZ740-741-040945-
/O.EXA.KLOT.SC.Y.0082.000000T0000Z-250904T0800Z/
/O.CON.KLOT.GL.A.0016.250905T0600Z-250905T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
841 PM CDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CDT THURSDAY...
...GALE WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY MORNING...

* WHAT...For the Small Craft Advisory, northwest winds to 25 kt
  and significant waves to 5 ft expected. For the Gale Watch,
  southwest gales to 35 kt and significant waves to 6 ft
  occasionally to 8 ft possible.

* WHERE...Winthrop Harbor to Northerly Island IL.

* WHEN...For the Small Craft Advisory, until 3 AM CDT Thursday.
  For the Gale Watch, from late Thursday night through Friday
  morning.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

LMZ742-743-040945-
/O.CON.KLOT.SC.Y.0082.000000T0000Z-250904T0800Z/
/O.CON.KLOT.GL.A.0016.250905T0600Z-250905T1500Z/
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
841 PM CDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 AM CDT
THURSDAY...
...GALE WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY MORNING...

* WHAT...For the Small Craft Advisory, northwest winds to 25 kt
  and significant waves to 6 ft occasionally to 8 ft expected.
  For the Gale Watch, southwest winds to 35 kt and significant
  waves to 6 ft occasionally to 8 ft possible.

* WHERE...Northerly Island to Calumet Harbor IL and Calumet
  Harbor IL to Gary IN.

* WHEN...For the Small Craft Advisory, until 3 AM CDT Thursday.
  For the Gale Watch, from late Thursday night through Friday
  morning.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$

LMZ744-745-040945-
/O.CON.KLOT.SC.Y.0082.000000T0000Z-250904T2000Z/
/O.CON.KLOT.GL.A.0016.250905T0600Z-250905T1500Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
841 PM CDT Wed Sep 3 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CDT
THURSDAY...
...GALE WATCH REMAINS IN EFFECT FROM LATE THURSDAY NIGHT THROUGH
FRIDAY MORNING...

* WHAT...For the Small Craft Advisory, northwest winds to 25 kt
  and significant waves to 7 ft occasionally to 9 ft expected.
  For the Gale Watch, southwest winds to 35 kt and significant
  waves to 6 ft occasionally to 8 ft possible.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, until 3 PM CDT Thursday.
  For the Gale Watch, from late Thursday night through Friday
  morning.

* IMPACTS...Strong winds can cause hazardous waves which could
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and waves.

&&

$$