Hazardous marine condition(s):
Hazardous Weather Outlook
Small Craft Advisory
LMZ740>742-190415-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
211 PM CST Tue Nov 18 2025
SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT
TONIGHT
East winds 10 to 20 kt. Slight chance of rain in the
evening. Waves 3 to 6 ft occasionally to 8 ft subsiding to 2 to 4
ft.
WEDNESDAY
East winds around 10 kt becoming southeast. Mostly
cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft.
WEDNESDAY NIGHT
South winds around 5 kt becoming southwest
overnight. Cloudy. Waves 1 to 2 ft.
THURSDAY
South winds 10 to 15 kt. Slight chance of rain in the
afternoon. Waves 1 to 2 ft.
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