Wilmette Harbor - Northerly Island
LMZ740>742-311515- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 314 AM CDT Fri Jul 31 2026
..SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT
TODAY
South winds around 10 kt becoming southeast 10 to 20 kt. Chance of showers in the afternoon. Waves 1 ft or less building to 1 to 3 ft.
TONIGHT
Southeast winds 15 to 20 kt becoming east 20 to 25 kt overnight. Showers and a chance of thunderstorms. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
SATURDAY
East winds 20 to 25 kt becoming northeast to 30 kt in the afternoon. Showers and slight chance of thunderstorms. Waves building to 6 to 9 ft occasionally to 12 ft.
SATURDAY NIGHT
Northeast winds to 30 kt diminishing to 15 to 25 kt. Chance of showers and slight chance of thunderstorms in the evening, then slight chance of showers overnight. Waves subsiding to 5 to 8 ft occasionally to 10 ft. $$
..SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH LATE SUNDAY NIGHT
TODAY
South winds around 10 kt becoming southeast 10 to 20 kt. Chance of showers in the afternoon. Waves 1 ft or less building to 1 to 3 ft.
TONIGHT
Southeast winds 15 to 20 kt becoming east 20 to 25 kt overnight. Showers and a chance of thunderstorms. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
SATURDAY
East winds 20 to 25 kt becoming northeast to 30 kt in the afternoon. Showers and slight chance of thunderstorms. Waves building to 6 to 9 ft occasionally to 12 ft.
SATURDAY NIGHT
Northeast winds to 30 kt diminishing to 15 to 25 kt. Chance of showers and slight chance of thunderstorms in the evening, then slight chance of showers overnight. Waves subsiding to 5 to 8 ft occasionally to 10 ft. $$
