NWS Marine Forecast

   LMZ740>743-170315-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  Calumet Harbor IL to Gary IN-  241 PM CDT Mon Mar 16 2026    GALE WARNING IN EFFECT UNTIL 10 PM CDT THIS EVENING    TONIGHT  Northwest gales to 35 kt diminishing to 20 to 25 kt.  Freezing Spray. Chance of snow showers in the evening, then  slight chance of snow showers after midnight. Waves 8 to 11 ft  occasionally to 14 ft subsiding to 5 to 8 ft occasionally to 10  ft.  TUESDAY  Northwest winds 15 to 20 kt becoming west 10 to 15 kt.  Partly cloudy in the morning, then becoming mostly cloudy. Waves  4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.  TUESDAY NIGHT  Southwest winds 10 to 15 kt becoming south 15 to  20 kt overnight. Chance of snow in the evening, then snow  overnight. Waves 1 to 3 ft building to 2 to 4 ft.  WEDNESDAY  South winds 15 to 20 kt becoming southwest 10 to 15  kt. Slight chance of snow in the morning. Waves 2 to 4 ft.    $$