NWS Marine Forecast


   LMZ740>742-300315-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  242 PM CDT Wed Apr 29 2026    TONIGHT  North winds 15 to 25 kt becoming northwest 10 to 15 kt  after midnight. Partly cloudy in the evening then clearing. Waves  2 to 4 ft subsiding to 1 to 3 ft.  THURSDAY  Northwest winds 10 to 15 kt becoming east in the  afternoon. Partly cloudy in the morning, then becoming mostly  cloudy. Waves 1 to 2 ft.  THURSDAY NIGHT  East winds around 10 kt becoming north  overnight. Slight chance of showers in the evening. Waves 1 to  2 ft.  FRIDAY  North winds 10 to 15 kt becoming northeast in the  afternoon. Slight chance of showers in the afternoon. Waves 1 to  2 ft.    $$