Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
077 FZUS53 KLOT 022059 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 259 PM CST Tue Dec 2 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>743-030415- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- Calumet Harbor IL to Gary IN- 259 PM CST Tue Dec 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CST THIS EVENING THROUGH WEDNESDAY MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY EVENING THROUGH THURSDAY MORNING... .TONIGHT...Southwest winds 10 to 20 kt increasing to 20 to 25 kt late this evening and then 30 kt overnight. Cloudy. Waves 1 to 2 ft building to 2 to 4 ft. .WEDNESDAY...Southwest winds 20 to 25 kt becoming west 15 to 20 kt by midday and then shifting northwest late. Slight chance of snow showers in the morning, then chance of snow showers in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft. .WEDNESDAY NIGHT...Northwest winds 15 to 20 kt increasing to 20 to 25 kt. Mostly cloudy in the evening, then becoming partly cloudy. Waves building to 4 to 7 ft occasionally to 9 ft. .THURSDAY...Northwest winds 15 to 25 kt becoming west around 10 kt in the afternoon. Partly cloudy in the morning then clearing. Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft. $$ LMZ744-745-030415- Gary to Burns Harbor IN-Burns Harbor to Michigan City IN- 259 PM CST Tue Dec 2 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM MIDNIGHT CST TONIGHT THROUGH THURSDAY AFTERNOON... .TONIGHT...Southwest winds 10 to 20 kt increasing to 20 to 25 kt overnight. Mostly cloudy. Waves 1 to 3 ft building to 3 to 5 ft late. .WEDNESDAY...Southwest winds 20 to 25 kt becoming west 15 to 25 kt in the afternoon. Chance of snow showers in the afternoon. Waves 3 to 6 ft occasionally to 8 ft. .WEDNESDAY NIGHT...Northwest winds 20 to 25 kt increasing to 30 kt. Chance of snow showers in the evening. Waves building to 7 to 10 ft occasionally to 13 ft. .THURSDAY...Northwest winds 20 to 25 kt becoming west around 10 kt in the afternoon. Mostly cloudy in the morning, then becoming partly cloudy. Waves 6 to 9 ft occasionally to 12 ft subsiding to 2 to 4 ft late. $$ RC