Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-190330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
201 PM CDT Sat Apr 18 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING
LATE THIS AFTERNOON
West winds to 30 kt. Partly cloudy. Waves
2 to 4 ft.
TONIGHT
West winds 20 to 25 kt becoming southwest and
diminishing to around 15 kt. Mostly clear. Waves 2 to 4 ft
subsiding to 1 to 2 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 2 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.
$$