Hazardous marine condition(s):
Hazardous Weather Outlook
LMZ740>742-100330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
248 PM CDT Thu Apr 9 2026
TONIGHT
East winds 10 to 15 kt becoming northeast overnight.
Showers and slight chance of thunderstorms. Waves 1 to 3 ft.
FRIDAY
North winds 10 to 15 kt becoming northeast. Chance of
showers in the morning. Waves 1 to 3 ft.
FRIDAY NIGHT
Northeast winds around 10 kt. Partly cloudy in
the evening then clearing. Waves 1 to 2 ft.
SATURDAY
East winds around 10 kt. Partly cloudy in the
morning, then becoming mostly cloudy. Waves 1 to 2 ft.
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