Watches, Warnings & Advisories

2 products found for Marine Zone: LMZ744

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
316 PM CDT Sat Jul 18 2026

LMZ740>745-192030-
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-
316 PM CDT Sat Jul 18 2026

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...

  Hazardous conditions for small craft.

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

Sunday...
  Hazardous conditions for small craft are likely.
Monday...
  Hazardous conditions for small craft are likely.
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
Tuesday...
  Hazardous conditions for small craft are likely.
  Limited Thunderstorm Risk.
Wednesday...
  Hazardous conditions for small craft are likely.

$$

Yack

Visit us at www.weather.gov/chicago

Small Craft Advisory

URGENT - MARINE WEATHER MESSAGE
National Weather Service Chicago IL
250 PM CDT Sat Jul 18 2026

LMZ740>745-190400-
/O.CON.KLOT.SC.Y.0072.260719T0000Z-260719T0900Z/
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-
250 PM CDT Sat Jul 18 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING
TO 4 AM CDT SUNDAY...

* WHAT...Northeast winds to 25 kt and significant waves to 7 ft
  occasionally to 9 ft expected.

* WHERE...Illinois and Indiana nearshore from Winthrop Harbor IL
  to Michigan City IN.

* WHEN...From 7 PM this evening to 4 AM CDT Sunday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$