Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ741>743-230930-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
806 PM CDT Sat Aug 22 2026
SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT SUNDAY THROUGH
SUNDAY EVENING
REST OF TONIGHT
North winds 10 to 15 kt becoming northwest
around 10 kt. Isolated showers with a slight chance of a water
spout. Waves 1 to 3 ft.
SUNDAY
Northwest winds 10 to 15 kt becoming north. Increasing
cloudiness. Waves 3 to 5 ft.
SUNDAY NIGHT
North winds 10 to 15 kt diminishing to 5 to 10
kt. Mostly clear. Waves 3 to 5 ft subsiding to 2 to 4 ft.
MONDAY
West winds 5 to 10 kt becoming northeast in the
afternoon. Mostly sunny in the morning, then becoming partly
cloudy. Waves 1 to 3 ft.
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