NWS Marine Forecast


   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.    $$