


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
739 FZUS53 KLOT 170255 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 955 PM CDT Mon Jun 16 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>742-170915- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 955 PM CDT Mon Jun 16 2025 .REST OF TONIGHT...Southeast winds 5 to 10 kt becoming southwest late. Mostly cloudy. Waves around 1 ft. .TUESDAY...Southwest winds 10 to 15 kt. Slight chance of showers in the morning. Chance of showers and thunderstorms in the afternoon. Waves around 1 ft. .TUESDAY NIGHT...West winds 5 to 10 kt becoming southwest overnight. Showers and thunderstorms likely. Waves 1 ft or less. .WEDNESDAY...South winds 10 to 20 kt. Showers in the morning, then showers and a chance of thunderstorms in the afternoon. Waves 1 to 2 ft. $$ LMZ743>745-170915- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 955 PM CDT Mon Jun 16 2025 .REST OF TONIGHT...Southeast winds 5 to 10 kt becoming southwest late. Mostly cloudy. Waves around 1 ft. .TUESDAY...Southwest winds 10 to 15 kt. Slight chance of showers and thunderstorms in the afternoon. Waves 1 ft or less. .TUESDAY NIGHT...Southwest winds 5 to 10 kt. Showers and thunderstorms likely. Waves 1 ft or less. .WEDNESDAY...South winds 10 to 15 kt increasing to 15 to 20 kt. Showers likely in the morning, then showers and a chance of thunderstorms in the afternoon. Waves 1 to 2 ft. $$ Petr