NWS Marine Forecast



 Hazardous marine condition(s):
 Hazardous Weather Outlook
   LMZ740>743-111015-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  Calumet Harbor IL to Gary IN-  904 PM CST Tue Feb 10 2026    REST OF TONIGHT  Northwest winds 10 to 20 kt increasing to 15  to 25 kt. Partly cloudy. Waves 2 to 4 ft.  WEDNESDAY  Northwest winds 10 to 20 kt. Partly cloudy in the  morning then clearing. Waves 2 to 4 ft subsiding to 1 to 3 ft.  WEDNESDAY NIGHT  Northwest winds 10 to 15 kt. Mostly clear in  the evening, then becoming partly cloudy. Waves 1 to 2 ft.  THURSDAY  Northwest winds around 5 kt becoming east in the  afternoon. Mostly cloudy. Waves 1 to 2 ft.    Wave heights are for ice free areas.    $$