Hazardous marine condition(s):
Hazardous Weather Outlook
LMZ740>742-160315-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
314 PM CDT Wed Apr 15 2026
TONIGHT
Southwest winds 15 to 20 kt become south this evening
and diminishing to 10 to 15 kt. Showers and a chance of
thunderstorms. Waves 1 to 2 ft.
THURSDAY
West winds 10 to 15 kt becoming north in the
afternoon. Chance of showers and slight chance of thunderstorms.
Waves 1 to 2 ft.
THURSDAY NIGHT
East winds around 10 kt becoming southeast
overnight. Partly cloudy in the evening, then becoming mostly
cloudy. Waves 1 to 2 ft.
FRIDAY
Southeast winds 10 to 15 kt increasing to 15 to 20 kt.
Mostly cloudy. Waves 1 to 2 ft building to 2 to 4 ft.
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