LMZ740-010915-
Winthrop Harbor to Wilmette Harbor IL-
910 PM CDT Tue Sep 30 2025
REST OF TONIGHT
Northeast winds around 15 kt becoming east
15 to 25 kt after midnight. Partly cloudy late in the evening,
then becoming mostly cloudy. Waves 2 to 4 ft building to 3 to 5
ft.
WEDNESDAY
East winds 10 to 15 kt. Mostly cloudy. Waves 3 to 5
ft subsiding to 1 to 3 ft.
WEDNESDAY NIGHT
East winds around 20 kt becoming southeast
overnight. Mostly cloudy. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft. A small craft advisory will likely be
needed.
THURSDAY
Southeast winds 10 to 15 kt. Mostly cloudy in the
morning then clearing. Waves 3 to 5 ft subsiding to 1 to 3 ft.
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