


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
219 FZUS53 KLOT 130832 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 332 AM CDT Sun Jul 13 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>742-131530- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 332 AM CDT Sun Jul 13 2025 .TODAY...Northwest winds 5 to 10 kt becoming east late. Partly cloudy in the morning, then becoming mostly cloudy. Waves 1 ft or less. .TONIGHT...Southeast winds around 5 kt becoming southwest overnight. Partly cloudy in the evening then clearing. Waves 1 ft or less. .MONDAY...Southwest winds 5 to 10 kt becoming southeast in the afternoon. Sunny. Waves 1 ft or less. .MONDAY NIGHT...Southeast winds 5 to 10 kt becoming south overnight. Mostly clear. Waves 1 ft or less. $$ LMZ743>745-131530- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 332 AM CDT Sun Jul 13 2025 .TODAY...Northwest winds 5 to 10 kt becoming northeast late. Partly cloudy in the morning, then becoming mostly cloudy. Waves 1 to 2 ft. .TONIGHT...East winds around 5 kt becoming southwest overnight. Mostly cloudy in the evening then clearing. Waves 1 ft or less. .MONDAY...Southwest winds 5 to 10 kt becoming northeast in the afternoon. Sunny. Waves 1 ft or less. .MONDAY NIGHT...East winds 5 to 10 kt becoming southeast overnight. Mostly clear. Waves 1 ft or less. $$ - Izzi