Northerly Island - Calumet Harbor
LMZ740>742-181600- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 954 PM CST Tue Feb 17 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
REST OF TONIGHT
Southeast winds 20 to 25 kt becoming south late. Rain likely late in the evening, then showers likely and slight chance of thunderstorms after midnight. Waves 3 to 5 ft.
WEDNESDAY
Southwest winds to 30 kt easing to 20 to 25 kt late. Slight chance of showers in the morning. Waves 3 to 5 ft subsiding to 2 to 4 ft late.
WEDNESDAY NIGHT
Southwest winds 10 to 15 kt becoming south overnight. Partly cloudy in the evening, then becoming mostly cloudy. Waves 1 to 3 ft.
THURSDAY
Southeast winds 10 to 15 kt. Slight chance of rain in the morning, then chance of rain in the afternoon. Waves 1 to 2 ft building to 2 to 4 ft. Wave heights are for ice free areas. $$
..SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON
REST OF TONIGHT
Southeast winds 20 to 25 kt becoming south late. Rain likely late in the evening, then showers likely and slight chance of thunderstorms after midnight. Waves 3 to 5 ft.
WEDNESDAY
Southwest winds to 30 kt easing to 20 to 25 kt late. Slight chance of showers in the morning. Waves 3 to 5 ft subsiding to 2 to 4 ft late.
WEDNESDAY NIGHT
Southwest winds 10 to 15 kt becoming south overnight. Partly cloudy in the evening, then becoming mostly cloudy. Waves 1 to 3 ft.
THURSDAY
Southeast winds 10 to 15 kt. Slight chance of rain in the morning, then chance of rain in the afternoon. Waves 1 to 2 ft building to 2 to 4 ft. Wave heights are for ice free areas. $$
