Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
059 FZUS53 KLOT 031559 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 959 AM CST Wed Dec 3 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>743-032215- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 959 AM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CST THIS EVENING THROUGH THURSDAY MORNING... .REST OF TODAY...Southwest winds 15 to 25 kt becoming west 15 to 20 kt in the early afternoon then shifting to northwest. Slight chance of snow late in the morning, then chance of snow in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft. .TONIGHT...Northwest winds 15 to 20 kt increasing to 20 to 25 kt in the mid to late evening. Mostly cloudy in the evening, then becoming partly cloudy. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. .THURSDAY...Northwest winds 15 to 20 kt becoming west and diminishing to around 10 kt in the afternoon. Partly cloudy in the morning then clearing. Waves 3 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft. .THURSDAY NIGHT...Southwest winds 10 to 20 kt. Partly cloudy. Waves 2 to 4 ft. $$ LMZ744-745-032215- Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 959 AM CST Wed Dec 3 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON... .REST OF TODAY...Southwest winds 20 to 25 kt becoming west 15 to 25 kt in the afternoon. Chance of snow in the afternoon. Waves 3 to 5 ft. .TONIGHT...Northwest winds 20 to 25 kt. Chance of snow in the evening. Waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. .THURSDAY...Northwest winds 20 to 25 kt becoming west and diminishing to 10 to 15 kt in the afternoon. Mostly cloudy in the morning, then becoming partly cloudy. Waves 6 to 9 ft occasionally to 12 ft subsiding to 3 to 5 ft late. .THURSDAY NIGHT...South winds 10 to 20 kt. Partly cloudy. Waves 2 to 4 ft. $$ RC