Watches, Warnings & Advisories



3 products found for Marine Zone: LMZ745

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
859 PM CST Sat Nov 8 2025

LMZ740>745-100300-
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-
859 PM CST Sat Nov 8 2025

This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.

.DAY ONE...Tonight.

Weather hazards expected...

  Gale force winds and very hazardous waves.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday and Monday...
  Periods of Gale force winds and very hazardous waves.
  Limited Thunderstorm Risk.
Tuesday through Thursday...
  Hazardous conditions for small craft are likely.

$$

- Izzi

Visit us at www.weather.gov/chicago




Gale Warning

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
848 PM CST Sat Nov 8 2025

LMZ743>745-091100-
/O.CON.KLOT.SC.Y.0098.251109T0600Z-251109T1200Z/
/O.CON.KLOT.GL.W.0027.251109T1200Z-251110T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
848 PM CST Sat Nov 8 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 AM CST SUNDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM SUNDAY TO 6 AM CST
MONDAY...

* WHAT...For the Small Craft Advisory, winds to 25 kt and
  significant waves to 7 ft occasionally to 9 ft expected. For the
  Gale Warning, winds to 35 kt and significant waves to 16 ft
  occasionally to 21 ft expected.

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

* WHEN...For the Small Craft Advisory, from midnight tonight to
  6 AM CST Sunday. For the Gale Warning, from 6 AM Sunday to 6
  AM 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.

&&

$$



Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
848 PM CST Sat Nov 8 2025

LMZ743>745-091100-
/O.CON.KLOT.SC.Y.0098.251109T0600Z-251109T1200Z/
/O.CON.KLOT.GL.W.0027.251109T1200Z-251110T1200Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
848 PM CST Sat Nov 8 2025

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 6 AM CST SUNDAY...
...GALE WARNING REMAINS IN EFFECT FROM 6 AM SUNDAY TO 6 AM CST
MONDAY...

* WHAT...For the Small Craft Advisory, winds to 25 kt and
  significant waves to 7 ft occasionally to 9 ft expected. For the
  Gale Warning, winds to 35 kt and significant waves to 16 ft
  occasionally to 21 ft expected.

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

* WHEN...For the Small Craft Advisory, from midnight tonight to
  6 AM CST Sunday. For the Gale Warning, from 6 AM Sunday to 6
  AM 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.

&&

$$