Watches, Warnings & Advisories



3 products found for Marine Zone: LMZ744

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
247 PM CDT Sat Nov 1 2025

LMZ740>745-022000-
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-
247 PM CDT Sat Nov 1 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...

  Waterspout Risk this evening.

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

Late Sunday afternoon through Monday morning...
  Hazardous conditions for small craft are likely.
Wednesday through Friday...
  Hazardous conditions for small craft are likely at times.

$$

- Izzi

Visit us at www.weather.gov/chicago




Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
244 PM CDT Sat Nov 1 2025

LMZ743>745-020345-
/O.NEW.KLOT.SC.Y.0095.251103T0000Z-251103T1600Z/
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
244 PM CDT Sat Nov 1 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM SUNDAY TO 10 AM CDT
MONDAY...

* WHAT...Southwest winds to 25 kt and significant waves to 5 ft
  expected.

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

* WHEN...From 6 PM Sunday to 10 AM CDT Monday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$




Marine Weather Statement

Marine Weather Statement
National Weather Service Chicago/Romeoville IL
1259 PM CDT Sat Nov 1 2025

LMZ740>745-777-779-012300-
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-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor IL to Michigan City IN 5NM
offshore to Mid Lake-
1259 PM CDT Sat Nov 1 2025

...Isolated Waterspouts Likely This Evening...

Scattered showers will overspread far southern and southwestern
Lake Michigan very late this afternoon and continue this evening.
Conditions are expected to be favorable waterspouts. If
waterspouts are spotted or appear likely, special marine warnings
may be needed.

Mariners are advised to pay close attention to the weather late
this afternoon and this evening and seek safe harbor if
threatening weather approaches.

$$

- Izzi