Watches, Warnings & Advisories



2 products issued by NWS for: Evanston IL

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
220 PM CDT Wed May 20 2026

LMZ740>745-211930-
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-
220 PM CDT Wed May 20 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...Thursday through Tuesday.

Thursday through Saturday...
  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
933 PM CDT Wed May 20 2026

LMZ740>742-211045-
/O.CON.KLOT.SC.Y.0060.000000T0000Z-260521T1800Z/
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
933 PM CDT Wed May 20 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM CDT
THURSDAY...

* WHAT...Northeast winds to 25 kt and significant waves to 6 ft
  occasionally to 8 ft.

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

* WHEN...Until 1 PM CDT Thursday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$