NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
 Gale Warning
 Hazardous Weather Outlook
   LMZ740>742-130315-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  Northerly Island to Calumet Harbor IL-  242 PM CDT Sun Apr 12 2026    GALE WARNING IN EFFECT UNTIL 9 PM CDT THIS EVENING    SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CDT THIS EVENING  THROUGH LATE TONIGHT    REST OF THIS AFTERNOON  Southwest gales to 35 kt. Slight chance  of showers and thunderstorms. Waves 3 to 5 ft.  TONIGHT  Southwest gales to 35 kt decreasing to 20 to 25 kt.  Showers and slight chance of thunderstorms. Waves 3 to 5 ft.  MONDAY  Southwest winds 15 to 20 kt becoming south late. Slight  chance of showers and thunderstorms in the afternoon. Waves 2 to 4  ft.  MONDAY NIGHT  South winds 15 to 20 kt becoming southwest.  Chance of showers and thunderstorms. Waves 2 to 4 ft.  TUESDAY  Southwest winds 15 to 20 kt. Chance of showers and  thunderstorms. Waves 2 to 4 ft.    $$