Wilmette Harbor To Northerly Island-
Northerly Island To Calumet Harbor-
East winds 5 to 10 kt becoming southeast early this evening and then southwest in the late evening and overnight. Mostly clear. Waves 1 ft or less.
Southwest winds 5 to 10 kt becoming south 10 to 15 kt. Sunny. Waves around 1 ft.
South winds 10 to 15 kt increasing to 15 to 20 kt. Chance of showers and thunderstorms after midnight. Waves building to 2 to 4 ft.
South winds 15 to 20 kt increasing to 20 to 25 kt. Gusts to 30 kt possible. Slight chance of showers and thunderstorms in the morning. Waves 2 to 4 ft. A Small Craft Advisory will likely be needed.