Wilmette Harbor - Northerly Island
LMZ740>743-240900- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 247 PM CST Mon Feb 23 2026
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING
..GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON
LATE THIS AFTERNOON
North winds 10 to 20 kt diminishing to 10 to 15 kt. Partly cloudy. Waves 5 to 8 ft occasionally to 10 ft.
TONIGHT
North winds around 10 kt becoming nearly calm this evening, then becoming south 10 to 15 kt late. Partly cloudy in the evening, then becoming mostly cloudy. Waves 4 to 7 ft occasionally to 9 ft subsiding to 1 to 3 ft.
TUESDAY
South winds 15 to 25 kt becoming southwest and increasing to 35 kt gales by late morning. Slight chance of a sprinkle or light rain shower in the afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
TUESDAY NIGHT
West winds 20 to 25 kt diminishing to 15 to 20 kt overnight. Mostly cloudy in the evening, then becoming partly cloudy. Waves 2 to 4 ft.
WEDNESDAY
Northwest winds 15 to 20 kt becoming west 10 to 15 kt. Mostly sunny in the morning, then becoming partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. $$
..SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING
..GALE WARNING IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY AFTERNOON
LATE THIS AFTERNOON
North winds 10 to 20 kt diminishing to 10 to 15 kt. Partly cloudy. Waves 5 to 8 ft occasionally to 10 ft.
TONIGHT
North winds around 10 kt becoming nearly calm this evening, then becoming south 10 to 15 kt late. Partly cloudy in the evening, then becoming mostly cloudy. Waves 4 to 7 ft occasionally to 9 ft subsiding to 1 to 3 ft.
TUESDAY
South winds 15 to 25 kt becoming southwest and increasing to 35 kt gales by late morning. Slight chance of a sprinkle or light rain shower in the afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
TUESDAY NIGHT
West winds 20 to 25 kt diminishing to 15 to 20 kt overnight. Mostly cloudy in the evening, then becoming partly cloudy. Waves 2 to 4 ft.
WEDNESDAY
Northwest winds 15 to 20 kt becoming west 10 to 15 kt. Mostly sunny in the morning, then becoming partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. $$
