NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
 Hazardous Weather Outlook
   LMZ740>742-292115-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  923 AM CDT Mon Jun 29 2026    SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING    REST OF TODAY  South winds 10 to 15 kt increasing to 20 to 25  kt by early afternoon. Partly cloudy in the morning, then  becoming mostly sunny. Waves 1 to 3 ft building to 2 to 4 ft.  TONIGHT  South winds 20 to 25 kt early in the evening,  diminishing to 15 to 20 kt. Clear. Waves 2 to 4 ft subsiding to 1  to 3 ft.  TUESDAY  Southwest winds 15 to 25 kt. Mostly sunny in the  morning, then becoming partly cloudy. Waves 1 to 3 ft.  TUESDAY NIGHT  Southwest winds 15 to 25 kt. Clear. Waves 1 to  3 ft.    $$