


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
672 FZUS53 KLOT 010821 CCA NSHLOT Nearshore Marine Forecast...CORRECTED National Weather Service Chicago/Romeoville IL 321 AM CDT Wed Oct 1 2025 For waters within five nautical miles of shore on Lake Michigan Waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the waves, along with the average height of the highest 10 percent of the waves which will occasionally be encountered. LMZ740-011615- Winthrop Harbor to Wilmette Harbor IL- 321 AM CDT Wed Oct 1 2025 .TODAY...Southeast winds 10 to 20 kt becoming northeast 10 to 15 kt in the afternoon. Partly cloudy in the morning, then becoming mostly cloudy. Waves 3 to 5 ft subsiding to 1 to 3 ft. .TONIGHT...East winds 10 to 15 kt increasing to 15 to 25 kt in the evening then becoming southeast and diminishing to 10 to 15 kt around daybreak. Mostly cloudy. Waves 2 to 4 ft building to 3 to 5 ft. .THURSDAY...Southeast winds 10 to 15 kt. Mostly cloudy in the morning then clearing. Waves 2 to 4 ft subsiding to 1 to 3 ft. .THURSDAY NIGHT...Southeast winds around 10 kt becoming south overnight. Mostly clear. Waves 1 to 2 ft. $$ LMZ741-742-011615- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 321 AM CDT Wed Oct 1 2025 .TODAY...Southeast winds 10 to 15 kt becoming northeast in the afternoon. Partly cloudy in the morning, then becoming mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. .TONIGHT...East winds 10 to 15 kt increasing to 15 to 25 kt in the evening then becoming southeast and diminishing to 10 to 15 kt around daybreak. Waves 1 to 3 ft building to 2 to 4 ft. .THURSDAY...Southeast winds 10 to 15 kt becoming east 5 to 10 kt in the afternoon. Mostly cloudy in the morning then clearing. Waves 2 to 4 ft subsiding to 1 to 2 ft. .THURSDAY NIGHT...Southeast winds around 10 kt becoming south overnight. Clear. Waves 1 to 2 ft. $$ LMZ743>745-011615- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 321 AM CDT Wed Oct 1 2025 .TODAY...East winds 10 to 15 kt becoming northeast in the afternoon. Partly cloudy in the morning, then becoming mostly cloudy. Waves 1 to 3 ft. .TONIGHT...Southeast winds 10 to 15 kt increasing to 15 to 25 kt in the evening then diminishing to 10 to 15 kt around daybreak Mostly cloudy. Waves 1 to 3 ft. .THURSDAY...Southeast winds 10 to 15 kt becoming east 5 to 10 kt in the afternoon. Mostly cloudy in the morning, then becoming partly cloudy. Waves 1 to 2 ft. .THURSDAY NIGHT...Southeast winds 5 to 10 kt becoming south overnight. Clear. Waves around 1 ft. $$ Carlaw