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Gale Warning 0010
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2026-02-22 03:24:13 2026-02-22 18:00:00 2026-02-23 15:00:00
Continued 2026-02-22 10:11:48 2026-02-22 18:00:00 2026-02-23 15:00:00
Continued 2026-02-22 15:12:56 2026-02-22 18:00:00 2026-02-23 15:00:00
Continued 2026-02-22 18:18:01 2026-02-23 15:00:00
Continued 2026-02-22 21:30:07 2026-02-23 15:00:00
Continued 2026-02-23 03:56:04 2026-02-23 15:00:00
Continued 2026-02-23 09:56:47 2026-02-23 15:00:00
Expired 2026-02-23 14:47:53 2026-02-23 15:00:00


Action: New
Issued At: 2026-02-22 03:24:13

986 
WHUS73 KLOT 220923
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
323 AM CST Sun Feb 22 2026

LMZ744-745-221730-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260223T0000Z/
/O.UPG.KLOT.GL.A.0005.260223T0000Z-260223T2100Z/
/O.NEW.KLOT.GL.W.0010.260223T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
323 AM CST Sun Feb 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 6 PM THIS EVENING TO 3 PM CST
MONDAY...

* WHAT...For the Small Craft Advisory, northwest winds to 30 kt
  and significant waves to 11 ft occasionally to 14 ft. For the
  Gale Warning, northwest winds to 35 kt and significant waves to
  14 ft occasionally to 18 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 3 PM 
  CST Monday.

* 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.

&&

$$

LMZ740>743-221730-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
323 AM CST Sun Feb 22 2026

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

* WHAT...Northwest winds to 30 kt and significant waves to 11 ft 
  occasionally to 14 ft.

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-02-22 10:11:48

177 
WHUS73 KLOT 221611
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
1011 AM CST Sun Feb 22 2026

LMZ744-745-230015-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260223T0000Z/
/O.CON.KLOT.GL.W.0010.260223T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
1011 AM CST Sun Feb 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 3 PM
CST MONDAY...

* WHAT...For the Small Craft Advisory, northwest winds to 30 kt
  and significant waves to 12 ft occasionally to 16 ft. For the
  Gale Warning, northwest winds to 35 kt and significant waves to
  14 ft occasionally to 18 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 3 PM 
  CST Monday.

* 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.

&&

$$

LMZ740>743-230015-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
1011 AM CST Sun Feb 22 2026

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

* WHAT...Northwest winds to 30 kt and significant waves to 11 ft 
  occasionally to 14 ft.

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-02-22 15:12:56

103 
WHUS73 KLOT 222112
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
312 PM CST Sun Feb 22 2026

LMZ744-745-230515-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260223T0000Z/
/O.CON.KLOT.GL.W.0010.260223T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
312 PM CST Sun Feb 22 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 PM CST THIS
EVENING...
...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM CST MONDAY...

* WHAT...For the Small Craft Advisory, northwest winds to 30 kt
  and significant waves to 12 ft occasionally to 16 ft. For the
  Gale Warning, northwest gales to 35 kt and significant waves to
  16 ft occasionally to 21 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, until 6 PM CST this 
  evening. For the Gale Warning, until 3 PM CST Monday.

* 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.

&&

$$

LMZ740>743-230515-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
312 PM CST Sun Feb 22 2026

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

* WHAT...Northwest winds to 30 kt and significant waves to 11 ft
  occasionally to 14 ft. Occasional 35 kt gales possible tonight
  and Monday morning. 

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-02-22 18:18:01

167 
WHUS73 KLOT 230017
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
617 PM CST Sun Feb 22 2026

LMZ744-745-230830-
/O.EXP.KLOT.SC.Y.0022.000000T0000Z-260223T0000Z/
/O.CON.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
617 PM CST Sun Feb 22 2026

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM CST MONDAY...

* WHAT...Northwest gales to 35 kt and significant waves to 16 ft 
  occasionally to 21 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 3 PM CST Monday.

* 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.

&&

$$

LMZ740>743-230830-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
617 PM CST Sun Feb 22 2026

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

* WHAT...Northwest winds to 30 kt and significant waves to 11 ft
  occasionally to 14 ft. Occasional 35 kt gales possible through  
  Monday morning. 

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-02-22 21:30:07

074 
WHUS73 KLOT 230329
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
929 PM CST Sun Feb 22 2026

LMZ744-745-231130-
/O.CON.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
929 PM CST Sun Feb 22 2026

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM CST MONDAY...

* WHAT...Northwest gales to 35 kt and significant waves to 14 ft 
  occasionally to 18 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 3 PM CST Monday.

* 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.

&&

$$

LMZ740>743-231130-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
929 PM CST Sun Feb 22 2026

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

* WHAT...Northwest winds to 30 kt and significant waves to 11 ft
  occasionally to 14 ft. Occasional 35 kt gales possible through
  Monday morning. 

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-02-23 03:56:04

739 
WHUS73 KLOT 230955
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
355 AM CST Mon Feb 23 2026

LMZ744-745-231800-
/O.CON.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
355 AM CST Mon Feb 23 2026

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON...

* WHAT...Northwest gales to 35 kt and significant waves to 14 ft 
  occasionally to 18 ft.

* WHERE...Gary to Michigan City IN.

* WHEN...Until 3 PM CST Monday.

* 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.

&&

$$

LMZ740>743-231800-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
355 AM CST Mon Feb 23 2026

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

* WHAT...Northwest winds to 30 kt and significant waves to 11 ft
  occasionally to 14 ft.

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Continued
Issued At: 2026-02-23 09:56:47

603 
WHUS73 KLOT 231556
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
956 AM CST Mon Feb 23 2026

LMZ744-745-232100-
/O.CON.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
956 AM CST Mon Feb 23 2026

...GALE WARNING REMAINS IN EFFECT UNTIL 3 PM CST THIS AFTERNOON...

* WHAT...Gales to 35 kt and significant waves to 14 ft  
  occasionally to 18 ft.

* WHERE...Gary to Michigan City IN.

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

* 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.

&&

$$

LMZ740>743-240000-
/O.CON.KLOT.SC.Y.0022.000000T0000Z-260224T0900Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
956 AM CST Mon Feb 23 2026

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

* WHAT...Winds to 30 kt and significant waves to 11 ft  
  occasionally to 14 ft.

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

* WHEN...Until 3 AM CST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$


Action: Expired
Issued At: 2026-02-23 14:47:53

590 
WHUS73 KLOT 232047
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
247 PM CST Mon Feb 23 2026

LMZ744-745-240900-
/O.EXP.KLOT.GL.W.0010.000000T0000Z-260223T2100Z/
/O.EXB.KLOT.SC.Y.0022.260223T2100Z-260224T0900Z/
/O.NEW.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
247 PM CST Mon Feb 23 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CST TUESDAY...
...GALE WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY...

* WHAT...For the Small Craft Advisory, northwest winds to 25 kt 
  and significant waves to 11 ft occasionally to 14 ft expected. 
  For the Gale Warning, south winds to 35 kt and significant 
  waves to 6 ft occasionally to 8 ft expected.

* WHERE...Gary to Michigan City IN.

* WHEN...For the Small Craft Advisory, until 3 AM CST Tuesday. 
  For the Gale Warning, from 9 AM to 6 PM CST Tuesday.

* 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.

&&

$$

LMZ740>743-240900-
/O.EXT.KLOT.SC.Y.0022.000000T0000Z-260224T0300Z/
/O.NEW.KLOT.GL.W.0011.260224T1500Z-260225T0000Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
247 PM CST Mon Feb 23 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM CST THIS
EVENING...
...GALE WARNING IN EFFECT FROM 9 AM TO 6 PM CST TUESDAY...

* WHAT...For the Small Craft Advisory, north winds to 25 kt and
  significant waves to 8 ft occasionally to 10 ft. For the Gale 
  Warning, south 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, until 9 PM CST this 
  evening. For the Gale Warning, from 9 AM to 6 PM CST Tuesday.

* 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.

&&

$$



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