Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
301 FZUS53 KLOT 191537 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 937 AM CST Wed Nov 19 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>742-192230- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 937 AM CST Wed Nov 19 2025 .REST OF TODAY...Southeast winds around 10 kt becoming around 5 kt. Cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. .TONIGHT...Southeast winds around 5 kt becoming southwest overnight. Cloudy. Waves 1 to 2 ft. .THURSDAY...Southwest winds around 10 kt. Mostly cloudy. Waves 1 to 2 ft. .THURSDAY NIGHT...Southwest winds around 10 kt becoming northwest overnight. Slight chance of rain in the evening. Waves 1 to 2 ft. $$ LMZ743>745-192230- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 937 AM CST Wed Nov 19 2025 .REST OF TODAY...Southeast winds around 10 kt becoming around 5 kt. Cloudy. Waves 1 to 2 ft. .TONIGHT...Southeast winds around 5 kt becoming south overnight. Cloudy. Waves 1 ft or less. .THURSDAY...South winds around 10 kt becoming southwest. Mostly cloudy. Waves around 1 ft. .THURSDAY NIGHT...Southwest winds 10 to 15 kt becoming northwest overnight. Slight chance of rain. Waves 1 to 3 ft. $$ Kluber