NWS Marine Forecast



 Hazardous marine condition(s):
 Hazardous Weather Outlook
 Small Craft Advisory
   LMZ740>742-120330-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  253 PM CDT Sat Apr 11 2026    SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH  MONDAY MORNING    TONIGHT  East winds 10 to 15 kt becoming south 15 to 20 kt  late. Chance of showers and slight chance of thunderstorms. Waves  1 to 2 ft building to 3 to 5 ft.  SUNDAY  South winds 15 to 25 kt becoming southwest to 30 kt  with occasional gales to 35 kt. Chance of showers and slight  chance of thunderstorms. Waves 3 to 5 ft.  SUNDAY NIGHT  Southwest winds 20 to 25 kt. Showers and slight  chance of thunderstorms in the evening, then showers and a chance  of thunderstorms overnight. Waves 2 to 4 ft.  MONDAY  Southwest winds 15 to 20 kt. Chance of showers and  slight chance of thunderstorms in the morning, then chance of  showers and thunderstorms in the afternoon. Waves 1 to 3 ft.    $$