


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
463 FZUS53 KLOT 060241 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 941 PM CDT Tue Aug 5 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>742-060915- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 941 PM CDT Tue Aug 5 2025 .REST OF TONIGHT...Northeast winds 10 to 15 kt becoming east and diminishing to 5 to 10 kt late. Areas of smoke. Waves 1 to 2 ft. .WEDNESDAY...Southeast winds 5 to 10 kt becoming east around 10 kt in the afternoon. Mostly sunny. Waves 1 to 2 ft. .WEDNESDAY NIGHT...East winds 5 to 10 kt becoming south overnight. Mostly clear in the evening, then becoming partly cloudy. Waves around 1 ft. .THURSDAY...South winds 5 to 10 kt becoming southeast around 10 kt in the afternoon. Mostly sunny in the morning, then becoming partly cloudy. Waves around 1 ft. $$ LMZ743>745-060915- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 941 PM CDT Tue Aug 5 2025 .REST OF TONIGHT...Northeast winds 10 to 15 kt becoming east and diminishing to 5 to 10 kt late. Areas of smoke. Waves 1 to 3 ft. .WEDNESDAY...East winds 5 to 10 kt becoming northeast around 10 kt in the afternoon. Mostly sunny. Waves 1 to 2 ft. .WEDNESDAY NIGHT...East winds 5 to 10 kt becoming south overnight. Mostly clear. Waves around 1 ft. .THURSDAY...South winds 5 to 10 kt becoming southeast. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 ft or less. $$ Doom