LMZ740>742-050915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
906 PM CDT Fri Sep 4 2026
REST OF TONIGHT
North winds around 10 kt becoming northeast.
Chance of showers and thunderstorms. Patchy fog after midnight.
Waves 1 to 2 ft.
SATURDAY
North winds around 10 kt increasing to 15 to 20 kt.
Patchy fog in the morning. Waves 1 to 2 ft building to 2 to 4 ft.
SATURDAY NIGHT
Northeast winds 10 to 20 kt becoming east 10 to
15 kt overnight. Partly cloudy in the evening then clearing.
Waves 2 to 4 ft.
SUNDAY
East winds 10 to 15 kt becoming northeast. Mostly
sunny. Waves 2 to 4 ft subsiding to 1 to 3 ft.
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