Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
322 FZUS53 KLOT 010401 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 1001 PM CST Sun Nov 30 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>742-011045- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1001 PM CST Sun Nov 30 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CST MONDAY... .REST OF TONIGHT...Northwest winds 10 to 20 kt. Partly cloudy late in the evening, then becoming mostly cloudy. Waves 3 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. .MONDAY...West winds 10 to 15 kt becoming south in the afternoon. Snow in the afternoon. Waves 2 to 4 ft subsiding to 1 to 2 ft. .MONDAY NIGHT...South winds 10 to 15 kt becoming west overnight. Snow in the evening, then chance of snow overnight. Waves 1 to 2 ft. .TUESDAY...West winds 10 to 15 kt. Slight chance of snow showers in the afternoon. Waves 1 to 2 ft. $$ LMZ743>745-011045- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1001 PM CST Sun Nov 30 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CST MONDAY... .REST OF TONIGHT...Northwest winds 10 to 20 kt becoming west and diminishing to around 10 kt late. Mostly cloudy. Waves 6 to 9 ft occasionally to 12 ft subsiding to 3 to 6 ft occasionally to 8 ft. .MONDAY...South winds 10 to 15 kt. Snow in the afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft. .MONDAY NIGHT...Southeast winds 10 to 15 kt becoming southwest overnight. Snow in the evening, then chance of snow overnight. Waves 1 to 3 ft. .TUESDAY...West winds 10 to 15 kt. Slight chance of snow in the morning, then slight chance of snow showers in the afternoon. Waves 1 to 3 ft. $$ Petr