NWS Marine Forecast

   LMZ742-743-110315-  Northerly Island to Calumet Harbor IL-  Calumet Harbor IL to Gary IN-  541 PM CDT Tue Mar 10 2026    DENSE FOG ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING  SEVERE THUNDERSTORM WATCH 35 IN EFFECT UNTIL MIDNIGHT CDT  TONIGHT  SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH  LATE WEDNESDAY NIGHT    TONIGHT  Northeast winds 10 to 15 kt becoming northwest late.  Areas of fog. Rain showers with thunderstorms likely. Waves 2 to  4 ft.  WEDNESDAY  Northwest winds 15 to 25 kt increasing to 30 kt.  Areas of fog in the morning. Rain showers and a chance of  thunderstorms in the morning, then showers likely and a chance of  snow showers in the afternoon. Waves 3 to 5 ft building to 4 to  6 ft occasionally to 8 ft.  WEDNESDAY NIGHT  Northwest winds to 30 kt diminishing to 15 to  25 kt. Mostly cloudy in the evening then clearing. Waves 4 to  7 ft occasionally to 9 ft.  THURSDAY  West winds 10 to 15 kt becoming southwest in the  afternoon. Sunny in the morning, then becoming partly cloudy.  Waves 3 to 5 ft subsiding to 1 to 3 ft.    $$