Hazardous marine condition(s):
Hazardous Weather Outlook
LMZ740>742-050915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
950 PM CDT Sun Oct 4 2026
REST OF TONIGHT
Northwest winds 10 to 15 kt becoming north
after midnight. Clear. Waves 1 to 3 ft.
MONDAY
North winds 10 to 15 kt becoming northeast in the
afternoon. Sunny. Waves 2 to 4 ft.
MONDAY NIGHT
East winds 10 to 15 kt becoming south overnight.
Clear. Waves 1 to 3 ft.
TUESDAY
South winds 10 to 20 kt. Sunny. Waves 1 to 3 ft
building to 2 to 4 ft.
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