Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
202 FZUS53 KLOT 150827 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 227 AM CST Sat Nov 15 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>743-152230- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 227 AM CST Sat Nov 15 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CST TODAY THROUGH SUNDAY AFTERNOON... .TODAY...Southwest winds 15 to 25 kt becoming northwest 20 to 25 kt. Mostly cloudy in the morning, then becoming partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. .TONIGHT...Northwest winds 20 to 25 kt increasing to 30 kt with occasional gales to 35 kt possible. Partly cloudy in the evening then clearing. Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9 ft. .SUNDAY...Northwest winds 20 to 25 kt diminishing to 15 to 20 kt. Sunny. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .SUNDAY NIGHT...Northwest winds 15 to 20 kt diminishing to 10 to 15 kt. Clear. Waves 2 to 4 ft. $$ LMZ744-745-152230- Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 227 AM CST Sat Nov 15 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY MORNING... .TODAY...Southwest winds 15 to 25 kt becoming northwest late. Mostly cloudy in the morning, then becoming partly cloudy. Waves 2 to 4 ft. .TONIGHT...Northwest winds 20 to 25 kt increasing to 30 kt with occasional gales to 35 kt possible. Partly cloudy in the evening, then becoming clear. Waves 3 to 5 ft building to 7 to 10 ft occasionally to 13 ft. .SUNDAY...Northwest winds to 30 kt. Sunny. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft. .SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt. Clear. Waves 4 to 7 ft occasionally to 9 ft. $$ Doom