Hazardous marine condition(s):
Hazardous Weather Outlook
Small Craft Advisory
LMZ740>742-200930-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1000 PM CDT Sat Sep 19 2026
SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT SUNDAY THROUGH
TUESDAY EVENING
REST OF TONIGHT
Southeast winds 10 to 20 kt becoming north and
increasing to 15 to 25 kt late. Showers. Thunderstorms likely
after midnight. Patchy fog after midnight. Waves 1 to 3 ft
building to 2 to 4 ft.
SUNDAY
North winds 15 to 20 kt becoming northeast and
increasing to 30 kt. Showers and slight chance of thunderstorms
in the morning, then chance of showers in the afternoon. Waves
4 to 6 ft occasionally to 8 ft building to 6 to 9 ft occasionally
to 12 ft.
SUNDAY NIGHT
Northeast winds to 30 kt becoming east 20 to
25 kt. Slight chance of showers in the evening. Waves 6 to 9 ft
occasionally to 12 ft.
MONDAY
East winds 20 to 25 kt becoming northeast to 30 kt.
Chance of showers in the morning, then slight chance of showers
in the afternoon. Waves 7 to 10 ft occasionally to 13 ft.
$$