


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
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878 FZUS53 KLOT 032001 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 301 PM CDT Thu Apr 3 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>742-040330- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 301 PM CDT Thu Apr 3 2025 .LATE THIS AFTERNOON...West winds 10 to 15 kt. Mostly cloudy. Waves 1 to 2 ft. .TONIGHT...Northwest winds 5 to 10 kt becoming northeast 10 to 15 kt late. Mostly cloudy. Waves 1 to 2 ft. .FRIDAY...Northeast winds 10 to 15 kt. Chance of showers in the afternoon. Waves 1 to 3 ft. .FRIDAY NIGHT...Northeast winds 15 to 20 kt. Rain showers and slight chance of thunderstorms. Waves 2 to 4 ft. .SATURDAY...North winds 15 to 20 kt. Chance of showers. Waves 3 to 5 ft. $$ LMZ743>745-040330- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 301 PM CDT Thu Apr 3 2025 .LATE THIS AFTERNOON...West winds 10 to 20 kt. Mostly cloudy. Waves 1 to 2 ft. .TONIGHT...Northwest winds 5 to 10 kt becoming northeast 10 to 15 kt late. Mostly cloudy. Waves around 1 ft. .FRIDAY...Northeast winds 10 to 15 kt. Chance of showers in the afternoon. Waves 1 to 2 ft. .FRIDAY NIGHT...Northeast winds 15 to 25 kt. Showers and slight chance of thunderstorms. Waves 2 to 4 ft. .SATURDAY...North winds 15 to 25 kt. Chance of showers and slight chance of thunderstorms in the morning, then chance of showers in the afternoon. Waves 3 to 5 ft. $$ DK