Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
596 FZUS53 KLOT 290359 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 959 PM CST Fri Nov 28 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>742-291015- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 959 PM CST Fri Nov 28 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM CST SATURDAY THROUGH SUNDAY EVENING... .REST OF TONIGHT...Southwest winds 5 to 10 kt becoming south 10 to 15 kt late. Chance of snow after midnight. Waves 1 to 3 ft. .SATURDAY...South winds 15 to 25 kt becoming southeast to 30 kt. Snow. Waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. .SATURDAY NIGHT...Southeast winds to 30 kt becoming west overnight. Snow and slight chance of rain. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft. .SUNDAY...Northwest winds to 30 kt. Snow likely in the morning, then chance of snow showers in the afternoon. Waves 4 to 7 ft occasionally to 9 ft. $$ LMZ743>745-291015- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 959 PM CST Fri Nov 28 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM CST SATURDAY THROUGH MONDAY MORNING... .REST OF TONIGHT...Southwest winds 5 to 10 kt becoming south 10 to 15 kt late. Chance of snow after midnight. Waves 2 to 4 ft. .SATURDAY...Southeast winds 15 to 25 kt increasing to 30 kt. Snow. Waves 2 to 4 ft building to 3 to 5 ft. .SATURDAY NIGHT...Southeast winds to 30 kt becoming west overnight. Snow and slight chance of rain in the evening, then snow and a chance of rain overnight. Waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft. .SUNDAY...Northwest winds to 30 kt. A few 35 kt gales possible. Snow and slight chance of rain in the morning, then snow showers likely in the afternoon. Waves 7 to 10 ft occasionally to 13 ft building to 8 to 11 ft occasionally to 14 ft. $$ Petr