NWS Marine Forecast

   LMZ740>742-120315-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  327 PM CDT Thu Jun 11 2026    TORNADO WATCH 313 IN EFFECT UNTIL 9 PM CDT THIS EVENING  SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING    LATE THIS AFTERNOON  Southeast winds 20 to 30 kt becoming south.  Chance of showers and thunderstorms. Some thunderstorms may be  severe. Waves 2 to 4 ft. Winds and waves higher in and near  storms.  TONIGHT  Southwest winds 20 to 30 kt becoming west by mid  evening and diminishing to 15 to 20 kt overnight. Showers with  thunderstorms likely in the evening. Some thunderstorms may be  severe. Waves 3 to 5 ft subsiding to 1 to 3 ft. Winds and waves  higher in and near storms.  FRIDAY  West winds 10 to 15 kt increasing to 15 to 20 kt.  Sunny. Waves 1 to 2 ft.  FRIDAY NIGHT  West winds 10 to 15 kt becoming southwest  overnight. Clear. Waves 1 to 2 ft.  SATURDAY  Southwest winds 10 to 15 kt increasing to 15 to  20 kt. Sunny in the morning, then becoming partly cloudy. Waves  1 to 3 ft.    $$