Hazardous marine condition(s):
Small Craft Advisory
Hazardous Weather Outlook
LMZ740>742-311800-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
340 AM CST Wed Dec 31 2025
SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM CST THIS MORNING
THROUGH LATE TONIGHT
TODAY
Northwest winds 10 to 20 kt increasing to 20 to 25 kt.
Snow in the afternoon. Waves 2 to 4 ft building to 3 to 5 ft.
TONIGHT
Northwest winds 20 to 25 kt diminishing to 15 to
20 kt. Slight chance of snow in the evening. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 6 ft occasionally to 8 ft.
THURSDAY
Northwest winds 10 to 15 kt becoming west. Partly
cloudy in the morning, then becoming mostly cloudy. Waves 3 to
5 ft subsiding to 1 to 3 ft.
THURSDAY NIGHT
West winds 10 to 15 kt. Mostly cloudy. Waves
1 to 2 ft.
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