


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
769 FZUS53 KLOT 130211 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 911 PM CDT Thu Jun 12 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>742-130915- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 911 PM CDT Thu Jun 12 2025 .REST OF TONIGHT...North winds 15 to 25 kt becoming northeast 10 to 15 kt late. Mostly cloudy. Waves 3 to 5 ft subsiding to 2 to 4 ft late. .FRIDAY...East winds 5 to 10 kt. Slight chance of showers. Waves 1 to 3 ft. .FRIDAY NIGHT...Northeast winds 5 to 10 kt. Slight chance of showers. Waves 1 to 2 ft. .SATURDAY...Northeast winds 5 to 10 kt. Mostly cloudy. Waves 1 to 2 ft. $$ LMZ743>745-130915- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 911 PM CDT Thu Jun 12 2025 .REST OF TONIGHT...North winds 5 to 10 kt becoming east late. Mostly cloudy. Waves 1 to 3 ft. .FRIDAY...Southeast winds 5 to 10 kt. Chance of showers. Waves 1 to 2 ft. .FRIDAY NIGHT...East winds 5 to 10 kt. Chance of showers. Waves around 1 ft. .SATURDAY...Northeast winds 5 to 10 kt. Chance of showers and slight chance of thunderstorms. Waves around 1 ft. $$ Doom