NWS Marine Forecast


   LMZ740>742-190315-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  257 PM CDT Fri Jul 18 2025    TONIGHT  East winds 5 to 10 kt becoming south late. Mostly  clear in the evening, then becoming mostly cloudy. Waves 1 to 3  ft.  SATURDAY  South winds 10 to 15 kt becoming southwest in the  afternoon. Showers likely and a chance of thunderstorms. Waves  1 to 2 ft.  SATURDAY NIGHT  Northwest winds 5 to 10 kt becoming north 10  to 15 kt overnight. Chance of showers and thunderstorms in the  evening, then slight chance of showers and thunderstorms  overnight. Waves 1 to 3 ft.  SUNDAY  Northeast winds 10 to 15 kt. Slight chance of showers  and thunderstorms in the morning. Waves 2 to 4 ft.    $$