FZUS53 KLOT 272013 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 313 PM CDT Mon Oct 27 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. LMZ740-280315- Winthrop Harbor to Wilmette Harbor IL- 313 PM CDT Mon Oct 27 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING... .TONIGHT...East winds 15 to 25 kt diminishing to 15 to 20 kt. Mostly clear in the evening, then becoming partly cloudy. Waves 4 to 7 ft occasionally to 8 ft. .TUESDAY...East winds 15 to 25 kt. Partly cloudy in the morning, then becoming mostly cloudy. Waves 4 to 7 ft occasionally to 9 ft. .TUESDAY NIGHT...East winds to 30 kt. Mostly cloudy in the evening, then becoming partly cloudy. Waves 8 to 12 ft occasionally to 16 ft. .WEDNESDAY...East winds to 30 kt becoming northeast. Mostly sunny. Waves 8 to 12 ft occasionally to 16 ft. $$ LMZ741-742-280315- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 313 PM CDT Mon Oct 27 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY MORNING... .TONIGHT...East winds 15 to 25 kt diminishing to 15 to 20 kt. Mostly clear in the evening, then becoming partly cloudy. Waves 4 to 7 ft occasionally to 9 ft. .TUESDAY...East winds 15 to 25 kt. Partly cloudy in the morning, then becoming mostly cloudy. Waves 4 to 6 ft occasionally to 8 ft. .TUESDAY NIGHT...East winds to 30 kt. Mostly cloudy in the evening, then becoming partly cloudy. Waves 6 to 9 ft occasionally to 12 ft building to 7 to 10 ft occasionally to 13 ft. .WEDNESDAY...East winds to 30 kt becoming northeast. Mostly sunny. Waves 8 to 11 ft occasionally to 14 ft. $$ LMZ743>745-280315- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 313 PM CDT Mon Oct 27 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY EVENING THROUGH LATE FRIDAY NIGHT... .TONIGHT...East winds 15 to 20 kt. Mostly clear in the evening, then becoming partly cloudy. Waves 3 to 5 ft subsiding to 2 to 4 ft. .TUESDAY...East winds 15 to 20 kt. Partly cloudy in the morning, then becoming mostly cloudy. Waves 2 to 4 ft. .TUESDAY NIGHT...East winds to 30 kt. Mostly cloudy in the evening, then becoming partly cloudy. Waves 4 to 7 ft occasionally to 9 ft. .WEDNESDAY...East winds 20 to 25 kt becoming northeast. Mostly sunny. Waves 5 to 8 ft occasionally to 10 ft. $$ KJB