Hazardous marine condition(s):
Hazardous Weather Outlook
Small Craft Advisory
LMZ740>742-061530-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
304 AM CDT Mon Apr 6 2026
SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM CDT THIS MORNING
THROUGH TUESDAY AFTERNOON
TODAY
Northwest winds 15 to 20 kt increasing to 20 to 25 kt.
Mostly cloudy. Waves 1 to 3 ft building to 2 to 4 ft.
TONIGHT
North winds 20 to 25 kt. Slight chance of rain and
snow showers in the evening, then slight chance of snow showers
overnight. Waves 3 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft.
TUESDAY
Northeast winds 10 to 20 kt in the morning, becoming
east around 10 kt in the afternoon. Mostly cloudy in the morning
then clearing. Waves 4 to 7 ft occasionally to 9 ft subsiding to
2 to 4 ft.
TUESDAY NIGHT
East winds 10 to 15 kt becoming southeast 15 to
20 kt overnight. Slight chance of rain and snow showers
overnight. Waves 1 to 3 ft building to 2 to 4 ft.
$$