Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
083 FZUS53 KLOT 091445 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 945 AM CDT Tue Jul 9 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>742-092115- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 945 AM CDT Tue Jul 9 2024 .REST OF TODAY...South winds less than 10 kt becoming east 5 to 10 kt late. Showers likely and slight chance of thunderstorms in the afternoon. Waves around 1 ft. .TONIGHT...East winds 10 to 20 kt becoming north 20 to 25 kt overnight. Showers and slight chance of thunderstorms. Waves around 1 ft building to 4 to 6 ft occasionally to 8 ft. A small craft advisory will likely be needed. .WEDNESDAY...North winds to 30 kt diminishing to 10 to 20 kt in the afternoon. Numerous showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Waves 4 to 7 ft occasionally to 9 ft. .WEDNESDAY NIGHT...North winds 10 to 15 kt becoming northwest 5 to 10 kt. Mostly clear. Waves 3 to 5 ft subsiding to 2 to 4 ft. $$ LMZ743>745-092115- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 945 AM CDT Tue Jul 9 2024 .REST OF TODAY...Southeast winds less than 10 kt becoming northeast in the afternoon. Chance of showers late in the morning, then showers likely and slight chance of thunderstorms in the afternoon. Waves 1 ft or less. .TONIGHT...Northeast winds 10 to 20 kt becoming north and increasing to 30 kt overnight. A few gale force gusts to 35 kt possible overnight. Showers and slight chance of thunderstorms. Waves 1 to 2 ft building to 5 to 8 ft occasionally to 10 ft. A small craft advisory will likely be needed. .WEDNESDAY...North winds to 30 kt diminishing to 10 to 20 kt late in the afternoon. A few gale force gusts to 35 kt possible in the morning. Numerous showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Waves 5 to 8 ft occasionally to 10 ft. .WEDNESDAY NIGHT...North winds 10 to 20 kt becoming northwest 10 to 15 kt. Mostly clear. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. $$ Carlaw