NWS Marine Forecast

   LMZ740>743-140330-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  Calumet Harbor IL to Gary IN-  302 PM CDT Fri Mar 13 2026    GALE WARNING IN EFFECT UNTIL 10 PM CDT THIS EVENING    LATE THIS AFTERNOON  West gales to 45 kt with some storm force  gusts to 50 kt. Mostly sunny. Waves 5 to 8 ft occasionally to 10 ft.  TONIGHT  Northwest gales to 40 kt diminishing to 10 to 20 kt.  Partly cloudy. Waves 4 to 7 ft occasionally to 9 ft subsiding to  3 to 5 ft.  SATURDAY  North winds 10 to 15 kt becoming east late. Slight  chance of snow in the afternoon. Waves 3 to 5 ft subsiding to  1 to 3 ft.  SATURDAY NIGHT  East winds 15 to 20 kt becoming southeast 20 to  25 kt. Chance of rain and snow in the evening, then chance of  rain overnight. Waves 3 to 5 ft building to 5 to 8 ft  occasionally to 10 ft.  SUNDAY  Southeast winds to 30 kt becoming south and increasing  to 35 kt gales in the afternoon. Chance of rain in the morning,  then rain and slight chance of thunderstorms in the afternoon.  Waves 5 to 8 ft occasionally to 10 ft.    $$