Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
338 FZUS53 KLOT 300424 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 1024 PM CST Sat Nov 29 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>742-301015- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1024 PM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY EVENING... .REST OF TONIGHT...South winds to 30 kt becoming west overnight. Occasional gale force gusts to 35 kt late in the evening. Snow and slight chance of rain. Waves 7 to 10 ft occasionally to 13 ft subsiding to 3 to 5 ft. .SUNDAY...Northwest winds to 30 kt. Snow showers in the morning, then slight chance of snow showers in the afternoon. Waves 4 to 7 ft occasionally to 9 ft. .SUNDAY NIGHT...Northwest winds 15 to 20 kt diminishing to 10 to 15 kt. Partly cloudy in the evening, then becoming mostly cloudy. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .MONDAY...West winds around 10 kt becoming southwest. Chance of snow in the afternoon. Waves 1 to 3 ft. $$ LMZ743>745-301015- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1024 PM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING... .REST OF TONIGHT...South winds to 30 kt becoming west overnight. Occasional gale force gusts to 35 kt late in the evening. Snow and a chance of rain. Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft. .SUNDAY...West winds to 30 kt becoming northwest. Occasional gale force gusts to 35 kt, mainly in the morning. Snow showers in the morning, then chance of snow showers in the afternoon. Waves 8 to 11 ft occasionally to 14 ft. .SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to 20 kt. Chance of snow in the evening. Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft occasionally to 9 ft. .MONDAY...Southwest winds 10 to 15 kt. Chance of snow in the afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft. $$ Ogorek