


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
403 FZUS53 KLOT 022025 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 325 PM CDT Wed Jul 2 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>742-030315- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 325 PM CDT Wed Jul 2 2025 .TONIGHT...Southeast winds 10 to 15 kt becoming south early in the evening, then becoming west 5 to 10 kt by late evening. Slight chance of showers and thunderstorms through early evening. Waves around 1 ft. .THURSDAY...Northwest winds 5 to 10 kt becoming east in the afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves around 1 ft. .THURSDAY NIGHT...East winds 5 to 10 kt becoming southeast overnight. Slight chance of showers and thunderstorms. Waves around 1 ft. .FRIDAY...South winds 5 to 10 kt increasing to 10 to 15 kt. Partly cloudy in the morning then clearing. Waves 1 to 2 ft. $$ LMZ743>745-030315- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 325 PM CDT Wed Jul 2 2025 .TONIGHT...Northeast winds 5 to 10 kt becoming southeast early in the evening, then becoming west by midnight. Partly cloudy in the evening, then becoming clear. Waves around 1 ft. .THURSDAY...West winds 5 to 10 kt becoming northeast in the afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves around 1 ft. .THURSDAY NIGHT...East winds 5 to 10 kt becoming southeast overnight. Mostly clear. Waves 1 ft or less. .FRIDAY...South winds 5 to 10 kt. Partly cloudy in the morning, then becoming mostly sunny. Waves around 1 ft. $$ Kluber