Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-160345-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
308 PM CDT Fri May 15 2026
SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
LATE THIS AFTERNOON
South winds 20 to 25 kt. Mostly sunny.
Waves 2 to 4 ft.
TONIGHT
South winds 10 to 20 kt becoming southwest late.
Showers and scattered thunderstorms after midnight. Waves 2 to
4 ft. Variable and gusty winds and higher waves in and near
showers and thunderstorms.
SATURDAY
South winds 10 to 20 kt becoming southwest and then
southeast around 10 kt late. Scattered showers and a slight
chance of thunderstorms in the morning, then slight chance of
showers and thunderstorms in the afternoon. Waves 1 to 3 ft.
SATURDAY NIGHT
Southeast winds 5 to 10 kt. Slight chance of
showers and thunderstorms. Waves around 1 ft.
SUNDAY
Southeast winds 10 to 15 kt increasing to 15 to 25 kt in
the afternoon. Slight chance of showers and thunderstorms in the
morning. Waves 1 to 2 ft building to 2 to 4 ft.
$$