Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-170915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1255 AM CDT Sat Oct 17 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING
REST OF TONIGHT
North winds to 30 kt diminishing to 15 to 25
kt by sunrise. Isolated showers. Waves 8 to 12 ft occasionally to
16 ft subsiding to 6 to 9 ft occasionally to 12 ft.
SATURDAY
North winds 10 to 20 kt becoming southwest 10 to
15 kt in the afternoon. Mostly sunny. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 3 to 5 ft.
SATURDAY NIGHT
Southwest winds 10 to 15 kt. Clear. Waves 1 to
3 ft.
SUNDAY
Southwest winds 15 to 20 kt becoming south. Sunny.
Waves 2 to 4 ft.
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