Hazardous marine condition(s):
Tornado Watch
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-180315-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
337 PM CDT Fri Apr 17 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY EVENING
TORNADO WATCH 131 IN EFFECT UNTIL 11 PM CDT THIS EVENING
TONIGHT
South winds to 30 kt becoming west 20 to 25 kt late.
Showers and thunderstorms in the evening, then showers and a
chance of thunderstorms after midnight. Some thunderstorms may
be severe with damaging winds and large hail in the evening.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
SATURDAY
Northwest winds 20 to 25 kt becoming west. Slight
chance of showers in the morning. Waves 2 to 4 ft.
SATURDAY NIGHT
West winds 15 to 20 kt diminishing to 10 to
15 kt. Partly cloudy in the evening, then becoming mostly clear.
Waves 1 to 3 ft.
SUNDAY
West winds 10 to 15 kt becoming northwest 15 to 20 kt
in the afternoon. Slight chance of showers in the afternoon.
Waves 1 to 2 ft.
$$