Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
547 FZUS53 KLOT 221556 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 956 AM CST Sat Nov 22 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>743-222230- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 956 AM CST Sat Nov 22 2025 .REST OF TODAY...South winds around 10 kt becoming southwest and increasing to 15 to 20 kt in the afternoon. Mostly sunny late in the morning then becoming mostly cloudy. Waves 1 to 3 ft. .TONIGHT...Southwest winds 15 to 20 kt becoming northwest late. Partly cloudy in the evening then clearing. Waves 1 to 3 ft. .SUNDAY...Northwest winds 10 to 20 kt becoming west and diminishing to around 10 kt in the afternoon. Sunny. Waves 1 to 3 ft. .SUNDAY NIGHT...Southwest winds 5 to 10 kt becoming south. Clear in the evening, then becoming partly cloudy. Waves 1 to 2 ft. $$ LMZ744-745-222230- Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 956 AM CST Sat Nov 22 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CST THIS EVENING THROUGH SUNDAY MORNING... .REST OF TODAY...Southeast winds around 10 kt becoming southwest and increasing to 15 to 20 kt in the afternoon. Mostly sunny late in the morning then becoming mostly cloudy. Waves 1 to 2 ft. .TONIGHT...Southwest winds 15 to 25 kt becoming northwest late. Partly cloudy in the evening then clearing. Waves 1 to 3 ft building to 3 to 6 ft occasionally to 8 ft. .SUNDAY...Northwest winds 15 to 25 kt becoming west and diminishing to 10 to 15 kt. Sunny. Waves 3 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. .SUNDAY NIGHT...Southwest winds around 10 kt becoming south. Clear in the evening, then becoming partly cloudy. Waves 1 to 3 ft. $$ Petr