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Gale Warning 0032
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2025-12-17 15:00:52 2025-12-18 18:00:00 2025-12-19 06:00:00
New 2025-12-17 15:00:52 2025-12-18 18:00:00 2025-12-19 06:00:00
Continued 2025-12-17 21:28:13 2025-12-18 18:00:00 2025-12-19 06:00:00
Continued 2025-12-17 21:28:13 2025-12-18 18:00:00 2025-12-19 06:00:00
Continued 2025-12-18 03:40:34 2025-12-18 18:00:00 2025-12-19 06:00:00
Continued 2025-12-18 03:40:34 2025-12-18 18:00:00 2025-12-19 06:00:00
Time Extended 2025-12-18 10:10:46 2025-12-18 10:10:00 2025-12-19 06:00:00
Time Extended 2025-12-18 10:10:46 2025-12-18 10:10:00 2025-12-19 06:00:00
Time Extended 2025-12-18 15:38:23 2025-12-19 12:00:00
Time Extended 2025-12-18 15:38:23 2025-12-19 09:00:00
Continued 2025-12-18 23:58:36 2025-12-19 09:00:00
Continued 2025-12-18 23:58:36 2025-12-19 12:00:00
Continued 2025-12-19 03:10:50 2025-12-19 09:00:00
Continued 2025-12-19 03:10:50 2025-12-19 12:00:00
Continued 2025-12-19 09:10:14 2025-12-19 12:00:00
Expired 2025-12-19 09:10:14 2025-12-19 09:00:00
Expired 2025-12-19 12:02:49 2025-12-19 12:00:00


Action: New
Issued At: 2025-12-17 15:00:52

065 
WHUS73 KLOT 172100
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
300 PM CST Wed Dec 17 2025

LMZ740>743-180500-
/O.CON.KLOT.SC.Y.0115.251218T0300Z-251219T0000Z/
/O.UPG.KLOT.GL.A.0022.251219T0000Z-251219T1200Z/
/O.NEW.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
300 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 6 PM CST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and
  significant waves to 6 ft occasionally to 8 ft expected. For the
  Gale Warning, west winds to 35 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...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-180500-
/O.CON.KLOT.SC.Y.0115.251218T0300Z-251219T0000Z/
/O.UPG.KLOT.GL.A.0022.251219T0000Z-251219T1200Z/
/O.NEW.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
300 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 6 PM CST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected. For the Gale Warning, west 
  winds to 35 kt and significant waves to 10 ft occasionally to 13
  ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: New
Issued At: 2025-12-17 15:00:52

065 
WHUS73 KLOT 172100
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
300 PM CST Wed Dec 17 2025

LMZ740>743-180500-
/O.CON.KLOT.SC.Y.0115.251218T0300Z-251219T0000Z/
/O.UPG.KLOT.GL.A.0022.251219T0000Z-251219T1200Z/
/O.NEW.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
300 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 6 PM CST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and
  significant waves to 6 ft occasionally to 8 ft expected. For the
  Gale Warning, west winds to 35 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...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-180500-
/O.CON.KLOT.SC.Y.0115.251218T0300Z-251219T0000Z/
/O.UPG.KLOT.GL.A.0022.251219T0000Z-251219T1200Z/
/O.NEW.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
300 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING
TO 6 PM CST THURSDAY...
...GALE WARNING IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected. For the Gale Warning, west 
  winds to 35 kt and significant waves to 10 ft occasionally to 13
  ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-17 21:28:13

668 
WHUS73 KLOT 180327
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
927 PM CST Wed Dec 17 2025

LMZ740>743-181130-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
927 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST
THURSDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST
FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and 
  significant waves to 6 ft occasionally to 8 ft expected. For 
  the Gale Warning, west winds to 35 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...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-181130-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
927 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST
THURSDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST
FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected. For the Gale Warning, west 
  winds to 35 kt and significant waves to 10 ft occasionally to 
  13 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-17 21:28:13

668 
WHUS73 KLOT 180327
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
927 PM CST Wed Dec 17 2025

LMZ740>743-181130-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
927 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST
THURSDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST
FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and 
  significant waves to 6 ft occasionally to 8 ft expected. For 
  the Gale Warning, west winds to 35 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...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-181130-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
927 PM CST Wed Dec 17 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST
THURSDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THURSDAY TO 6 AM CST
FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected. For the Gale Warning, west 
  winds to 35 kt and significant waves to 10 ft occasionally to 
  13 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, from 9 PM this evening to 
  6 PM CST Thursday. For the Gale Warning, from 6 PM Thursday to 
  6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-18 03:40:34

240 
WHUS73 KLOT 180940
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
340 AM CST Thu Dec 18 2025

LMZ740>743-181800-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
340 AM CST Thu Dec 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and
  significant waves to 6 ft occasionally to 8 ft. For the Gale
  Warning, west gales to 35 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...For the Small Craft Advisory, until 6 PM CST this 
  evening. For the Gale Warning, from 6 PM this evening to 6 AM 
  CST Friday.

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

* ADDITIONAL DETAILS...A brief period of southerly gales of 35 to
  40 kt are possible late this morning and early afternoon. A line
  of very gusty showers may also result in westerly gusts briefly
  over 40 kt early this afternoon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-181800-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
340 AM CST Thu Dec 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and
  significant waves to 5 ft. For the Gale Warning, west gales to 
  35 kt and significant waves to 10 ft occasionally to 13 ft 
  expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, until 6 PM CST this 
  evening. For the Gale Warning, from 6 PM this evening to 6 AM 
  CST Friday.

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

* ADDITIONAL DETAILS...A brief period of southerly gales of 35 to
  40 kt are possible late this morning and early afternoon. A line
  of very gusty showers may also result in westerly gusts briefly
  over 40 kt this afternoon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-18 03:40:34

240 
WHUS73 KLOT 180940
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
340 AM CST Thu Dec 18 2025

LMZ740>743-181800-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
340 AM CST Thu Dec 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and
  significant waves to 6 ft occasionally to 8 ft. For the Gale
  Warning, west gales to 35 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...For the Small Craft Advisory, until 6 PM CST this 
  evening. For the Gale Warning, from 6 PM this evening to 6 AM 
  CST Friday.

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

* ADDITIONAL DETAILS...A brief period of southerly gales of 35 to
  40 kt are possible late this morning and early afternoon. A line
  of very gusty showers may also result in westerly gusts briefly
  over 40 kt early this afternoon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-181800-
/O.CON.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.CON.KLOT.GL.W.0032.251219T0000Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
340 AM CST Thu Dec 18 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...For the Small Craft Advisory, south winds to 30 kt and
  significant waves to 5 ft. For the Gale Warning, west gales to 
  35 kt and significant waves to 10 ft occasionally to 13 ft 
  expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, until 6 PM CST this 
  evening. For the Gale Warning, from 6 PM this evening to 6 AM 
  CST Friday.

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

* ADDITIONAL DETAILS...A brief period of southerly gales of 35 to
  40 kt are possible late this morning and early afternoon. A line
  of very gusty showers may also result in westerly gusts briefly
  over 40 kt this afternoon. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Time Extended
Issued At: 2025-12-18 10:10:46

852 
WHUS73 KLOT 181610
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1010 AM CST Thu Dec 18 2025

LMZ740>743-190015-
/O.CAN.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.EXT.KLOT.GL.W.0032.251218T1610Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
1010 AM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL 6 AM CST FRIDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

* WHAT...South to west winds to 35 kt and significant waves to 6 
  ft occasionally to 8 ft.

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

* WHEN...Until 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-190015-
/O.CAN.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.EXT.KLOT.GL.W.0032.251218T1610Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
1010 AM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL 6 AM CST FRIDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

* WHAT...South to west winds to 35 kt and significant waves
  building to 10 ft occasionally to 13 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Time Extended
Issued At: 2025-12-18 10:10:46

852 
WHUS73 KLOT 181610
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1010 AM CST Thu Dec 18 2025

LMZ740>743-190015-
/O.CAN.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.EXT.KLOT.GL.W.0032.251218T1610Z-251219T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
1010 AM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL 6 AM CST FRIDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

* WHAT...South to west winds to 35 kt and significant waves to 6 
  ft occasionally to 8 ft.

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

* WHEN...Until 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-190015-
/O.CAN.KLOT.SC.Y.0115.000000T0000Z-251219T0000Z/
/O.EXT.KLOT.GL.W.0032.251218T1610Z-251219T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
1010 AM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL 6 AM CST FRIDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

* WHAT...South to west winds to 35 kt and significant waves
  building to 10 ft occasionally to 13 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Time Extended
Issued At: 2025-12-18 15:38:23

281 
WHUS73 KLOT 182137
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
337 PM CST Thu Dec 18 2025

LMZ740>743-190545-
/O.EXT.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
337 PM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL 9 AM CST FRIDAY...

* WHAT...West winds to 40 kt and significant waves to 6 ft 
  occasionally to 8 ft.

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

* WHEN...Until 9 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-190545-
/O.EXT.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
337 PM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL NOON CST FRIDAY...

* WHAT...West winds to 40 kt and significant waves to 10 ft 
  occasionally to 13 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until noon CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Time Extended
Issued At: 2025-12-18 15:38:23

281 
WHUS73 KLOT 182137
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
337 PM CST Thu Dec 18 2025

LMZ740>743-190545-
/O.EXT.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
337 PM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL 9 AM CST FRIDAY...

* WHAT...West winds to 40 kt and significant waves to 6 ft 
  occasionally to 8 ft.

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

* WHEN...Until 9 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-190545-
/O.EXT.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
337 PM CST Thu Dec 18 2025

...GALE WARNING NOW IN EFFECT UNTIL NOON CST FRIDAY...

* WHAT...West winds to 40 kt and significant waves to 10 ft 
  occasionally to 13 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until noon CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-18 23:58:36

489 
WHUS73 KLOT 190558
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1158 PM CST Thu Dec 18 2025

LMZ740>743-191400-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
1158 PM CST Thu Dec 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...

* WHAT...West gales to 35 kt and significant waves to 6 ft
  occasionally to 8 ft occurring. 

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

* WHEN...Until 9 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-191400-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
1158 PM CST Thu Dec 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY...

* WHAT...West gales to 35 kt and significant waves to 10 ft
  occasionally to 13 ft occurring.

* WHERE...Gary to Michigan City IN.

* WHEN...Until noon CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-18 23:58:36

489 
WHUS73 KLOT 190558
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1158 PM CST Thu Dec 18 2025

LMZ740>743-191400-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
1158 PM CST Thu Dec 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST FRIDAY...

* WHAT...West gales to 35 kt and significant waves to 6 ft
  occasionally to 8 ft occurring. 

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

* WHEN...Until 9 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-191400-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
1158 PM CST Thu Dec 18 2025

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST FRIDAY...

* WHAT...West gales to 35 kt and significant waves to 10 ft
  occasionally to 13 ft occurring.

* WHERE...Gary to Michigan City IN.

* WHEN...Until noon CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-19 03:10:50

053 
WHUS73 KLOT 190910
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
310 AM CST Fri Dec 19 2025

LMZ740>743-191715-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
/O.NEW.KLOT.SC.Y.0116.251219T1500Z-251219T2000Z/
/O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
310 AM CST Fri Dec 19 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 2 PM
CST THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
CST SATURDAY...

* WHAT...For the Gale Warning, west gales to 35 kt and significant
  waves to 6 ft occasionally to 8 ft expected. For the first Small
  Craft Advisory, northwest winds to 25 kt and significant waves
  to 6 ft occasionally to 8 ft expected. For the second Small
  Craft Advisory, southwest winds to 30 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...For the Gale Warning, until 9 AM CST this morning. For 
  the first Small Craft Advisory, from 9 AM this morning to 2 PM 
  CST this afternoon. For the second Small Craft Advisory, from 
  midnight tonight to 3 PM CST Saturday.

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

* ADDITIONAL DETAILS...A few gale force gusts possible late
  tonight into Saturday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-191715-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
/O.NEW.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/
/O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
310 AM CST Fri Dec 19 2025

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CST
THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
CST SATURDAY...

* WHAT...For the Gale Warning, west winds to 40 kt and significant
  waves to 11 ft occasionally to 14 ft expected. For the first
  Small Craft Advisory, west winds to 25 kt and significant waves
  to 9 ft occasionally to 12 ft expected. For the second Small 
  Craft Advisory, south winds to 35 kt and significant waves to 5 
  ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Gale Warning, until noon CST today. For the 
  first Small Craft Advisory, from noon today to 8 PM CST this 
  evening. For the second Small Craft Advisory, from midnight 
  tonight to 3 PM CST Saturday.

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

* ADDITIONAL DETAILS...A few gale force gusts possible late
  tonight into Saturday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-19 03:10:50

053 
WHUS73 KLOT 190910
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
310 AM CST Fri Dec 19 2025

LMZ740>743-191715-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
/O.NEW.KLOT.SC.Y.0116.251219T1500Z-251219T2000Z/
/O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
310 AM CST Fri Dec 19 2025

...GALE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM THIS MORNING TO 2 PM
CST THIS AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
CST SATURDAY...

* WHAT...For the Gale Warning, west gales to 35 kt and significant
  waves to 6 ft occasionally to 8 ft expected. For the first Small
  Craft Advisory, northwest winds to 25 kt and significant waves
  to 6 ft occasionally to 8 ft expected. For the second Small
  Craft Advisory, southwest winds to 30 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...For the Gale Warning, until 9 AM CST this morning. For 
  the first Small Craft Advisory, from 9 AM this morning to 2 PM 
  CST this afternoon. For the second Small Craft Advisory, from 
  midnight tonight to 3 PM CST Saturday.

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

* ADDITIONAL DETAILS...A few gale force gusts possible late
  tonight into Saturday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$

LMZ744-745-191715-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
/O.NEW.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/
/O.NEW.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
310 AM CST Fri Dec 19 2025

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...SMALL CRAFT ADVISORY IN EFFECT FROM NOON TODAY TO 8 PM CST
THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 3 PM
CST SATURDAY...

* WHAT...For the Gale Warning, west winds to 40 kt and significant
  waves to 11 ft occasionally to 14 ft expected. For the first
  Small Craft Advisory, west winds to 25 kt and significant waves
  to 9 ft occasionally to 12 ft expected. For the second Small 
  Craft Advisory, south winds to 35 kt and significant waves to 5 
  ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Gale Warning, until noon CST today. For the 
  first Small Craft Advisory, from noon today to 8 PM CST this 
  evening. For the second Small Craft Advisory, from midnight 
  tonight to 3 PM CST Saturday.

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

* ADDITIONAL DETAILS...A few gale force gusts possible late
  tonight into Saturday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Continued
Issued At: 2025-12-19 09:10:14

375 
WHUS73 KLOT 191509
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
909 AM CST Fri Dec 19 2025

LMZ740>743-192315-
/O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
/O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/
/O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
909 AM CST Fri Dec 19 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 PM CST SATURDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...For the first Small Craft Advisory, northwest winds to 30
  kt. For the second Small Craft Advisory, southwest winds to 30
  kt. Significant waves up to 6 ft occasionally to 8 ft expected.

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

* WHEN...For the first Small Craft Advisory, until 2 PM CST this 
  afternoon. For the second Small Craft Advisory, from midnight 
  tonight to 3 PM CST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ744-745-192315-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
/O.CON.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/
/O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
909 AM CST Fri Dec 19 2025

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS
EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 PM CST SATURDAY...

* WHAT...For the Gale Warning, northwest winds to 35 kt and 
  significant waves to 10 ft occasionally to 13 ft. For the 
  first Small Craft Advisory, west winds to 30 kt and 
  significant waves to 9 ft occasionally to 12 ft expected. For 
  the second Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Gale Warning, until noon CST today. For the 
  first Small Craft Advisory, until 8 PM CST this evening. For 
  the second Small Craft Advisory, from midnight tonight to 3 PM 
  CST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Expired
Issued At: 2025-12-19 09:10:14

375 
WHUS73 KLOT 191509
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
909 AM CST Fri Dec 19 2025

LMZ740>743-192315-
/O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1500Z/
/O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/
/O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
909 AM CST Fri Dec 19 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 PM CST SATURDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...For the first Small Craft Advisory, northwest winds to 30
  kt. For the second Small Craft Advisory, southwest winds to 30
  kt. Significant waves up to 6 ft occasionally to 8 ft expected.

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

* WHEN...For the first Small Craft Advisory, until 2 PM CST this 
  afternoon. For the second Small Craft Advisory, from midnight 
  tonight to 3 PM CST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ744-745-192315-
/O.CON.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
/O.CON.KLOT.SC.Y.0116.251219T1800Z-251220T0200Z/
/O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
909 AM CST Fri Dec 19 2025

...GALE WARNING REMAINS IN EFFECT UNTIL NOON CST TODAY...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS
EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 PM CST SATURDAY...

* WHAT...For the Gale Warning, northwest winds to 35 kt and 
  significant waves to 10 ft occasionally to 13 ft. For the 
  first Small Craft Advisory, west winds to 30 kt and 
  significant waves to 9 ft occasionally to 12 ft expected. For 
  the second Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Gale Warning, until noon CST today. For the 
  first Small Craft Advisory, until 8 PM CST this evening. For 
  the second Small Craft Advisory, from midnight tonight to 3 PM 
  CST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for hazardous conditions.

&&

$$


Action: Expired
Issued At: 2025-12-19 12:02:49

059 
WHUS73 KLOT 191802
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1202 PM CST Fri Dec 19 2025

LMZ744-745-200215-
/O.EXP.KLOT.GL.W.0032.000000T0000Z-251219T1800Z/
/O.CON.KLOT.SC.Y.0116.000000T0000Z-251220T0200Z/
/O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
1202 PM CST Fri Dec 19 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM CST THIS
EVENING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 PM CST SATURDAY...
...GALE WARNING HAS EXPIRED...

* WHAT...For the first Small Craft Advisory, west winds to 25 kt 
  and significant waves to 8 ft occasionally to 10 ft. For the 
  second Small Craft Advisory, south winds to 30 kt and 
  significant waves to 5 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the first Small Craft Advisory, until 8 PM CST this 
  evening. For the second Small Craft Advisory, from midnight 
  tonight to 3 PM CST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ740>743-200215-
/O.CON.KLOT.SC.Y.0116.000000T0000Z-251219T2000Z/
/O.CON.KLOT.SC.Y.0117.251220T0600Z-251220T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
1202 PM CST Fri Dec 19 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 PM CST THIS
AFTERNOON...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 3 PM CST SATURDAY...

* WHAT...For the first Small Craft Advisory, west winds to 25 kt
  and significant waves to 5 ft. For the second Small Craft
  Advisory, southwest winds to 30 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...For the first Small Craft Advisory, until 2 PM CST this 
  afternoon. For the second Small Craft Advisory, from midnight 
  tonight to 3 PM CST Saturday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$



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