


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
920 FZUS53 KLOT 020156 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 856 PM CDT Fri Aug 1 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>742-020915- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 856 PM CDT Fri Aug 1 2025 .REST OF TONIGHT...North winds 10 to 15 kt becoming northeast 5 to 10 kt late. Mostly clear early, then becoming partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. .SATURDAY...Northeast winds 5 to 10 kt. Decreasing cloudiness. Waves 1 to 3 ft. .SATURDAY NIGHT...Northeast winds 5 to 10 kt becoming east overnight. Mostly clear. Waves around 1 ft. .SUNDAY...East winds 5 to 10 kt. Mostly sunny. Waves 1 ft or less. $$ LMZ743>745-020915- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 856 PM CDT Fri Aug 1 2025 .REST OF TONIGHT...Northeast winds 10 to 15 kt becoming east 5 to 10 kt. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft. .SATURDAY...East winds 5 to 10 kt becoming northeast in the afternoon. Mostly sunny. Waves 1 to 3 ft. .SATURDAY NIGHT...Northeast winds 5 to 10 kt becoming east overnight. Mostly clear. Waves 1 to 2 ft. .SUNDAY...East winds 5 to 10 kt becoming northeast in the afternoon. Mostly sunny. Waves 1 ft or less. $$ Doom