Hazardous marine condition(s):
Gale Warning
Hazardous Weather Outlook
LMZ740>743-182230-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
949 AM CST Sun Jan 18 2026
GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH MONDAY
MORNING
REST OF TODAY
Southwest winds 15 to 25 kt. Snow late. Waves 2
to 4 ft.
TONIGHT
Southwest winds 15 to 25 kt becoming west gales to 40
kt after midnight. Snow in the evening, then a slight chance of
snow overnight. Freezing spray overnight. Waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft.
MONDAY
West gales to 35 kt diminishing to 30 kt in the morning.
Mostly cloudy in the morning, then becoming partly cloudy. Waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
MONDAY NIGHT
West winds 15 to 25 kt. Mostly cloudy. Waves 2
to 4 ft.
Wave heights are for ice free areas.
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