![National Oceanic and Atmospheric Administration](/build/images/header/noaa.d87e0251.png)
![National Weather Service](/build/images/header/nws.4e6585d8.png)
![United States Department of Commerce](/build/images/header/doc.b38ba91a.png)
Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
761 FZUS53 KLOT 151338 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 838 AM CDT Thu Aug 15 2024 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. LMZ740-152130- Winthrop Harbor to Wilmette Harbor IL- 838 AM CDT Thu Aug 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING... .REST OF TODAY...Southeast winds 20 to 25 kt becoming south. Scattered showers. Waves 3 to 5 ft. .TONIGHT...South winds 15 to 20 kt becoming southwest 10 to 15 kt. Chance of showers and thunderstorms. Waves 3 to 5 ft subsiding to 2 to 4 ft. .FRIDAY...Southwest winds 15 to 20 kt. Chance of showers and thunderstorms in the afternoon. Waves 1 to 3 ft. .FRIDAY NIGHT...West winds 10 to 15 kt. Slight chance of showers and thunderstorms in the evening. Waves 1 to 2 ft. $$ LMZ741-152130- Wilmette Harbor to Northerly Island IL- 838 AM CDT Thu Aug 15 2024 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... .REST OF TODAY...Southeast winds 20 to 25 kt becoming south. Scattered showers. Waves 2 to 4 ft. .TONIGHT...South winds 15 to 20 kt diminishing to 10 to 15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft subsiding to 1 to 3 ft. .FRIDAY...Southwest winds 10 to 15 kt increasing to 15 to 20 kt. Chance of showers and thunderstorms in the afternoon. Waves 1 to 3 ft. .FRIDAY NIGHT...West winds 10 to 15 kt. Slight chance of showers and thunderstorms in the evening. Waves 1 to 2 ft. $$ LMZ742>745-152130- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 838 AM CDT Thu Aug 15 2024 .REST OF TODAY...Southeast winds 15 to 20 kt. Scattered showers. Waves 1 to 3 ft. .TONIGHT...South winds 10 to 20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft. .FRIDAY...Southwest winds 10 to 20 kt. Slight chance of showers in the morning, then chance of showers and thunderstorms in the afternoon. Waves 1 to 3 ft. .FRIDAY NIGHT...West winds 10 to 15 kt. Slight chance of showers and thunderstorms in the evening. Waves 1 to 3 ft. $$ Borchardt