Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
217 FZUS53 KLOT 112049 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 249 PM CST Tue Nov 11 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>742-120430- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 249 PM CST Tue Nov 11 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY EVENING... .TONIGHT...Southwest winds to 30 kt becoming west 20 to 25 kt late. A few gale force gusts to 35 kt through sunset. Mostly clear. Waves 3 to 5 ft subsiding to 2 to 4 ft. .WEDNESDAY...West winds to 30 kt. Sunny. Waves 2 to 4 ft. .WEDNESDAY NIGHT...West winds 20 to 25 kt diminishing to 10 to 20 kt. Mostly clear in the evening, then becoming partly cloudy. Waves 1 to 3 ft. .THURSDAY...West winds 10 to 15 kt becoming southwest in the afternoon. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 2 ft. $$ LMZ743>745-120430- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 249 PM CST Tue Nov 11 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE WEDNESDAY NIGHT... .TONIGHT...Southwest winds to 30 kt becoming west late. A few gale force gusts to 35 kt through sunset. Mostly clear. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. .WEDNESDAY...West winds to 30 kt. Mostly sunny. Waves 4 to 7 ft occasionally to 9 ft. .WEDNESDAY NIGHT...West winds 20 to 25 kt diminishing to 15 to 20 kt late. Mostly clear in the evening, then becoming partly cloudy. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. .THURSDAY...West winds 10 to 15 kt becoming southwest in the afternoon. Mostly sunny in the morning, then becoming partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. $$ Yack