Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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372 FZUS53 KLOT 261440 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 940 AM CDT Sat Jul 26 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>742-262115- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 940 AM CDT Sat Jul 26 2025 .REST OF TODAY...South winds around 10 kt becoming southeast. Showers likely and slight chance of thunderstorms late in the morning, then showers and thunderstorms likely in the afternoon. Waves 1 to 2 ft. .TONIGHT...South winds around 10 kt becoming southwest overnight. Chance of showers and thunderstorms in the evening, then chance of showers and slight chance of thunderstorms overnight. Waves 1 to 2 ft. .SUNDAY...Northwest winds 5 to 10 kt becoming east in the afternoon. Slight chance of showers and thunderstorms. Waves around 1 ft. .SUNDAY NIGHT...Southeast winds 5 to 10 kt becoming southwest overnight. Mostly clear. Waves around 1 ft. $$ LMZ743>745-262115- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 940 AM CDT Sat Jul 26 2025 .REST OF TODAY...South winds 10 to 15 kt becoming southeast. Chance of showers and slight chance of thunderstorms late in the morning, then showers and thunderstorms likely in the afternoon. Waves 1 to 2 ft. .TONIGHT...South winds around 10 kt becoming southwest overnight. Showers and thunderstorms likely in the evening, then chance of showers and slight chance of thunderstorms overnight. Waves 1 to 2 ft. .SUNDAY...West winds 5 to 10 kt becoming northeast in the afternoon. Chance of showers and slight chance of thunderstorms in the morning, then slight chance of showers and thunderstorms in the afternoon. Waves around 1 ft. .SUNDAY NIGHT...Southeast winds 5 to 10 kt becoming southwest overnight. Mostly clear. Waves around 1 ft. $$