Wilmette Harbor - Northerly Island
LMZ740>742-162130- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 251 AM CDT Tue Jun 16 2026
..SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM CDT THIS MORNING THROUGH THIS EVENING
EARLY THIS MORNING
Southwest winds 10 to 20 kt. Partly cloudy. Waves 1 to 2 ft.
TODAY
Southwest winds 15 to 20 kt increasing to 20 to 25 kt late this morning, then becoming west in the afternoon. Showers likely and a chance of thunderstorms in the morning, then chance of showers and thunderstorms in the early to mid afternoon. Waves 1 to 2 ft building to 2 to 4 ft.
TONIGHT
West winds 20 to 25 kt diminishing to 10 to 15 kt. Partly cloudy. Waves 1 to 3 ft.
WEDNESDAY
South winds 10 to 15 kt becoming southeast and increasing to 30 kt in the afternoon. Periods of showers and thunderstorms. Some thunderstorms may be severe in the afternoon. Waves 1 to 2 ft building to 4 to 7 ft occasionally to 9 ft.
WEDNESDAY NIGHT
South winds to 30 kt becoming west 20 to 25 kt overnight. Showers and thunderstorms in the evening. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. $$
..SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM CDT THIS MORNING THROUGH THIS EVENING
EARLY THIS MORNING
Southwest winds 10 to 20 kt. Partly cloudy. Waves 1 to 2 ft.
TODAY
Southwest winds 15 to 20 kt increasing to 20 to 25 kt late this morning, then becoming west in the afternoon. Showers likely and a chance of thunderstorms in the morning, then chance of showers and thunderstorms in the early to mid afternoon. Waves 1 to 2 ft building to 2 to 4 ft.
TONIGHT
West winds 20 to 25 kt diminishing to 10 to 15 kt. Partly cloudy. Waves 1 to 3 ft.
WEDNESDAY
South winds 10 to 15 kt becoming southeast and increasing to 30 kt in the afternoon. Periods of showers and thunderstorms. Some thunderstorms may be severe in the afternoon. Waves 1 to 2 ft building to 4 to 7 ft occasionally to 9 ft.
WEDNESDAY NIGHT
South winds to 30 kt becoming west 20 to 25 kt overnight. Showers and thunderstorms in the evening. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. $$
