Hazardous marine condition(s):
Hazardous Weather Outlook
LMZ740>742-190915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
940 PM CDT Sat Apr 18 2026
REST OF TONIGHT
West winds 15 to 25 kt becoming southwest
10 to 20 kt. Clear. Waves 2 to 4 ft subsiding to 1 to 3 ft.
SUNDAY
Southwest winds 10 to 15 kt becoming northwest 15 to
25 kt. Slight chance of showers in the morning, then chance of
showers in the afternoon. Waves 1 to 3 ft.
SUNDAY NIGHT
North winds 10 to 15 kt becoming northeast
overnight. Partly cloudy in the evening then clearing. Waves 1
to 3 ft.
MONDAY
East winds 10 to 15 kt becoming southeast. Mostly
sunny. Waves 1 to 3 ft.
$$