Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-130330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
232 PM CDT Tue May 12 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING
LATE THIS AFTERNOON
Southwest winds to 30 kt with a few gale
force gusts to 35 kt. Scattered showers with isolated
thunderstorms. Waves 3 to 5 ft.
TONIGHT
Southwest winds 20 to 25 kt becoming northwest.
Scattered showers with isolated thunderstorms in the evening.
Waves 3 to 5 ft subsiding to 2 to 4 ft.
WEDNESDAY
Northwest winds 20 to 25 kt becoming northeast 15 to
20 kt. Mostly cloudy. Waves 2 to 4 ft.
WEDNESDAY NIGHT
North winds 10 to 15 kt becoming northwest.
Decreasing cloud cover. Waves 1 to 3 ft.
THURSDAY
North winds around 10 kt becoming east in the
afternoon. Sunny. Waves 1 to 2 ft.
$$