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Small Craft Advisory 0097
Issued by the Chicago Forecast Office

Action Issued Starts Expiration
New 2025-11-06 03:27:10 2025-11-06 18:00:00 2025-11-07 06:00:00
New 2025-11-06 03:27:10 2025-11-06 18:00:00 2025-11-07 06:00:00
New 2025-11-06 03:27:10 2025-11-06 18:00:00 2025-11-07 06:00:00
Continued 2025-11-06 09:16:57 2025-11-06 18:00:00 2025-11-07 06:00:00
Continued 2025-11-06 09:16:57 2025-11-06 18:00:00 2025-11-07 06:00:00
Continued 2025-11-06 14:38:50 2025-11-06 18:00:00 2025-11-07 06:00:00
Continued 2025-11-06 14:38:50 2025-11-06 18:00:00 2025-11-07 06:00:00
Continued 2025-11-06 21:19:31 2025-11-07 06:00:00
Continued 2025-11-06 21:19:31 2025-11-07 06:00:00
Time Extended 2025-11-07 02:59:40 2025-11-07 15:00:00
Time Extended 2025-11-07 02:59:40 2025-11-07 15:00:00
Continued 2025-11-07 09:09:44 2025-11-07 15:00:00
Continued 2025-11-07 09:09:44 2025-11-07 15:00:00
Expired 2025-11-07 15:13:23 2025-11-07 15:00:00


Action: New
Issued At: 2025-11-06 03:27:10

464 
WHUS73 KLOT 060926
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
326 AM CST Thu Nov 6 2025

LMZ744-745-061730-
/O.EXP.KLOT.SC.Y.0096.000000T0000Z-251106T0900Z/
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected. 

* WHERE...Gary to Michigan City IN.

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>742-061730-
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ743-061730-
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected. 

* WHERE...Calumet Harbor IL to Gary IN.

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: New
Issued At: 2025-11-06 03:27:10

464 
WHUS73 KLOT 060926
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
326 AM CST Thu Nov 6 2025

LMZ744-745-061730-
/O.EXP.KLOT.SC.Y.0096.000000T0000Z-251106T0900Z/
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected. 

* WHERE...Gary to Michigan City IN.

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>742-061730-
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ743-061730-
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected. 

* WHERE...Calumet Harbor IL to Gary IN.

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: New
Issued At: 2025-11-06 03:27:10

464 
WHUS73 KLOT 060926
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
326 AM CST Thu Nov 6 2025

LMZ744-745-061730-
/O.EXP.KLOT.SC.Y.0096.000000T0000Z-251106T0900Z/
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected. 

* WHERE...Gary to Michigan City IN.

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>742-061730-
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

LMZ743-061730-
/O.NEW.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-
326 AM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 6 AM
CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected. 

* WHERE...Calumet Harbor IL to Gary IN.

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: 2025-11-06 09:16:57

417 
WHUS73 KLOT 061516
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
916 AM CST Thu Nov 6 2025

LMZ740>742-062330-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
916 AM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>745-062330-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
916 AM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: 2025-11-06 09:16:57

417 
WHUS73 KLOT 061516
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
916 AM CST Thu Nov 6 2025

LMZ740>742-062330-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
916 AM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>745-062330-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
916 AM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 4 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: 2025-11-06 14:38:50

015 
WHUS73 KLOT 062038
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
238 PM CST Thu Nov 6 2025

LMZ740>742-070445-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
238 PM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>745-070445-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
238 PM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 5 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: 2025-11-06 14:38:50

015 
WHUS73 KLOT 062038
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
238 PM CST Thu Nov 6 2025

LMZ740>742-070445-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
238 PM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 6 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>745-070445-
/O.CON.KLOT.SC.Y.0097.251107T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
238 PM CST Thu Nov 6 2025

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

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 5 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: 2025-11-06 21:19:31

064 
WHUS73 KLOT 070319
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
919 PM CST Thu Nov 6 2025

LMZ740>742-071130-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
919 PM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 6 ft and occasional waves to 8 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>745-071130-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
919 PM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 5 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: 2025-11-06 21:19:31

064 
WHUS73 KLOT 070319
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
919 PM CST Thu Nov 6 2025

LMZ740>742-071130-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T1200Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
919 PM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and
  significant waves to 6 ft and occasional waves to 8 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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>745-071130-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
919 PM CST Thu Nov 6 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM CST FRIDAY...

* WHAT...South winds to 30 kt with occasional gales to 35 kt and 
  significant waves to 5 ft expected.

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

* WHEN...From 6 PM this evening to 6 AM CST Friday.

* 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: Time Extended
Issued At: 2025-11-07 02:59:40

586 
WHUS73 KLOT 070859
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
259 AM CST Fri Nov 7 2025

LMZ740>742-071700-
/O.EXT.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
259 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 30 kt with occasional gales to 35 kt
  diminishing to southwest winds to 25 kt after daybreak expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$

LMZ743>745-071700-
/O.EXT.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
259 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 30 kt with occasional gales to 35 kt
  diminishing to southwest winds to 25 kt after daybreak expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$


Action: Time Extended
Issued At: 2025-11-07 02:59:40

586 
WHUS73 KLOT 070859
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
259 AM CST Fri Nov 7 2025

LMZ740>742-071700-
/O.EXT.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
259 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 30 kt with occasional gales to 35 kt
  diminishing to southwest winds to 25 kt after daybreak expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$

LMZ743>745-071700-
/O.EXT.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
259 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 30 kt with occasional gales to 35 kt
  diminishing to southwest winds to 25 kt after daybreak expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$


Action: Continued
Issued At: 2025-11-07 09:09:44

206 
WHUS73 KLOT 071509
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
909 AM CST Fri Nov 7 2025

LMZ740>742-072100-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
909 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 25 kt after expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$

LMZ743>745-072100-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
909 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 25 kt expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$


Action: Continued
Issued At: 2025-11-07 09:09:44

206 
WHUS73 KLOT 071509
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
909 AM CST Fri Nov 7 2025

LMZ740>742-072100-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
909 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 25 kt after expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$

LMZ743>745-072100-
/O.CON.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
909 AM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 3 PM CST THIS
AFTERNOON...

* WHAT...Southwest winds to 25 kt expected.

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

* WHEN...Until 3 PM CST 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.

&&

$$


Action: Expired
Issued At: 2025-11-07 15:13:23

119 
WHUS73 KLOT 072112
MWWLOT

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
312 PM CST Fri Nov 7 2025

LMZ740>745-072215-
/O.EXP.KLOT.SC.Y.0097.000000T0000Z-251107T2100Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
312 PM CST Fri Nov 7 2025

...SMALL CRAFT ADVISORY HAS EXPIRED...

Winds will continue to abate with sunset late this afternoon.

$$



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