Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-071500-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
959 PM CDT Mon Apr 6 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON
REST OF TONIGHT
Northeast winds 20 to 25 kt becoming north 15
to 20 kt. Slight chance of snow showers. Waves 4 to 6 ft
occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft.
TUESDAY
Northeast winds 10 to 20 kt becoming east and
diminishing to around 10 kt late. Slight chance of snow showers
in the morning. 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 10 to
20 kt overnight. Slight chance of rain and snow showers overnight.
Waves 1 to 3 ft building to 2 to 4 ft.
WEDNESDAY
South winds 20 to 25 kt. Mostly cloudy. Waves
building to 4 to 6 ft occasionally to 8 ft.
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