Wilmette Harbor - Northerly Island
LMZ740>743-152115- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 909 AM CDT Sun Mar 15 2026
..GALE WARNING IN EFFECT THROUGH MONDAY EVENING
REST OF TODAY
South gales to 35 kt increasing to 45 kt this afternoon. Chance of showers and thunderstorms in the morning, then showers likely and slight chance of thunderstorms in the afternoon. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft occasionally to 8 ft.
TONIGHT
Southwest gales to 45 kt becoming west and diminishing to around 25 kt during the evening before increasing again to 35 kt overnight. Rain showers and a chance of thunderstorms in the evening, then rain showers and snow likely overnight. Waves 5 to 8 ft occasionally to 10 ft building to 10 to 14 ft occasionally to 18 ft.
MONDAY
Northwest gales to 40 kt. Freezing spray. Snow likely. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft occasionally to 14 ft.
MONDAY NIGHT
Northwest gales to 35 kt diminishing to 20 to 25 kt. Freezing spray. Chance of snow in the evening, then slight chance of snow overnight. Waves 6 to 9 ft occasionally to 12 ft subsiding to 5 to 8 ft occasionally to 10 ft. $$
..GALE WARNING IN EFFECT THROUGH MONDAY EVENING
REST OF TODAY
South gales to 35 kt increasing to 45 kt this afternoon. Chance of showers and thunderstorms in the morning, then showers likely and slight chance of thunderstorms in the afternoon. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft occasionally to 8 ft.
TONIGHT
Southwest gales to 45 kt becoming west and diminishing to around 25 kt during the evening before increasing again to 35 kt overnight. Rain showers and a chance of thunderstorms in the evening, then rain showers and snow likely overnight. Waves 5 to 8 ft occasionally to 10 ft building to 10 to 14 ft occasionally to 18 ft.
MONDAY
Northwest gales to 40 kt. Freezing spray. Snow likely. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft occasionally to 14 ft.
MONDAY NIGHT
Northwest gales to 35 kt diminishing to 20 to 25 kt. Freezing spray. Chance of snow in the evening, then slight chance of snow overnight. Waves 6 to 9 ft occasionally to 12 ft subsiding to 5 to 8 ft occasionally to 10 ft. $$
