


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
756 FZUS53 KLOT 150850 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 350 AM CDT Tue Jul 15 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>742-151545- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 350 AM CDT Tue Jul 15 2025 .TODAY...South winds around 5 kt becoming east late. Mostly sunny. Waves 1 ft or less. .TONIGHT...Southeast winds 5 to 10 kt becoming south overnight. Mostly clear in the evening, then becoming partly cloudy. Waves 1 ft or less. .WEDNESDAY...South winds 5 to 10 kt becoming southeast in the afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves 1 ft or less. .WEDNESDAY NIGHT...South winds around 10 kt becoming west overnight. Showers and thunderstorms likely in the evening, then chance of showers and thunderstorms overnight. Waves around 1 ft. $$ LMZ743>745-151545- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 350 AM CDT Tue Jul 15 2025 .TODAY...South winds 5 to 10 kt becoming east late. Mostly sunny. Waves around 1 ft. .TONIGHT...Southeast winds 5 to 10 kt becoming south overnight. Partly cloudy in the evening, then becoming mostly clear. Waves 1 ft or less. .WEDNESDAY...Southwest winds 5 to 10 kt becoming south in the afternoon. Slight chance of showers and thunderstorms. Waves 1 ft or less. .WEDNESDAY NIGHT...Southwest winds around 10 kt. Chance of showers and thunderstorms. Waves 1 ft or less. $$ - Izzi