


Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
372 FZUS53 KLOT 101453 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 953 AM CDT Fri Oct 10 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. LMZ740-741-102115- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- 953 AM CDT Fri Oct 10 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .REST OF TODAY...Southwest winds 20 to 25 kt. Isolated showers. Waves 2 to 4 ft. .TONIGHT...West winds 10 to 20 kt becoming north 15 to 20 kt in the evening. Slight chance of showers in the evening. Waves 2 to 4 ft. .SATURDAY...North winds 10 to 20 kt. Partly cloudy. Waves 2 to 4 ft. .SATURDAY NIGHT...Northeast winds 10 to 15 kt becoming east overnight. Partly cloudy in the evening, then becoming mostly clear. Waves 2 to 4 ft. $$ LMZ742-743-102115- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 953 AM CDT Fri Oct 10 2025 .REST OF TODAY...Southwest winds 15 to 25 kt. Isolated showers. Waves 1 to 3 ft. .TONIGHT...Northwest winds 15 to 20 kt becoming north overnight. Slight chance of showers in the evening. Waves 1 to 3 ft building to 2 to 4 ft. .SATURDAY...North winds 10 to 15 kt. Partly cloudy. Waves 2 to 4 ft. .SATURDAY NIGHT...Northeast winds 10 to 15 kt becoming east overnight. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft. $$ LMZ744-745-102115- Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 953 AM CDT Fri Oct 10 2025 .REST OF TODAY...Southwest winds 15 to 25 kt. Isolated showers in the afternoon. Waves 1 to 3 ft. .TONIGHT...West winds 15 to 20 kt becoming north overnight. Chance of showers in the evening. Waves 2 to 4 ft building to 3 to 5 ft. .SATURDAY...North winds 10 to 15 kt. Partly cloudy. Waves 3 to 5 ft subsiding to 2 to 4 ft. .SATURDAY NIGHT...Northeast winds around 10 kt becoming east overnight. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft. $$ Kluber