NWS Marine Forecast



 Hazardous marine condition(s):
 Gale Watch
 Small Craft Advisory
 Hazardous Weather Outlook
   LMZ740-741-252115-  Winthrop Harbor to Wilmette Harbor IL-  Wilmette Harbor to Northerly Island IL-  957 AM CDT Wed Mar 25 2026    SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO  8 PM CDT THIS EVENING  GALE WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH FRIDAY  MORNING    REST OF TODAY  South winds 15 to 20 kt increasing to 20 to  25 kt in the afternoon. Mostly cloudy late in the morning, then  becoming partly cloudy. Waves 2 to 4 ft.  TONIGHT  South winds 15 to 25 kt becoming southwest. Slight  chance of showers and thunderstorms. Waves subsiding to 2 to 4  ft.  THURSDAY  Southwest winds 10 to 20 kt shifting to north and  quickly increasing to gales to 35 kt late in the afternoon.  Showers likely and a chance of thunderstorms in the afternoon.  Waves 1 to 2 ft quickly building to 3 to 6 ft occasionally to 8 ft  late.  THURSDAY NIGHT  North gales to 35 kt. Chance of showers in the  evening. Waves 8 to 12 ft occasionally to 16 ft.    $$