NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
 Hazardous Weather Outlook
   LMZ740>742-060345-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  313 PM CDT Fri Sep 5 2025    SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING    TONIGHT  West winds 20 to 25 kt diminishing to 10 to 20 kt.  Partly cloudy in the evening then clearing. Waves 1 to 3 ft.  SATURDAY  West winds 15 to 20 kt. Mostly sunny in the morning,  then becoming mostly cloudy. Waves 1 to 3 ft.  SATURDAY NIGHT  West winds 15 to 20 kt becoming northwest.  Partly cloudy in the evening then clearing. Waves 1 to 3 ft.  SUNDAY  Northwest winds 10 to 20 kt diminishing to around 10 kt  in the afternoon and becoming north late. Mostly sunny. Waves 1  to 2 ft.    $$