Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
703 FZUS53 KLOT 091511 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 911 AM CST Sun Nov 9 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>742-092215- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 911 AM CST Sun Nov 9 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...Northwest gales to 35 kt. Snow showers with a chance of waterspouts in the morning. Waves 5 to 8 ft occasionally to 10 ft. .TONIGHT...Northwest gales to 35 kt becoming north after midnight. Thundersnow with a chance of waterspouts. Waves 10 to 14 ft occasionally to 18 ft. .MONDAY...North winds to 30 kt becoming northwest 20 to 25 kt in the afternoon. Thundersnow with a chance of waterspouts in the morning. Waves 8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft occasionally to 12 ft. .MONDAY NIGHT...Northwest winds 15 to 25 kt becoming west 15 to 20 kt. Slight chance of snow in the evening. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. $$ LMZ743>745-092215- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 911 AM CST Sun Nov 9 2025 ...GALE WARNING IN EFFECT THROUGH LATE TONIGHT... .REST OF TODAY...North gales to 35 kt becoming northwest this afternoon. Rain and snow showers with a chance of water spouts. Waves 6 to 9 ft occasionally to 12 ft building to 10 to 14 ft occasionally to 18 ft. .TONIGHT...Northwest gales to 35 kt becoming northeast after midnight. Thundersnow with a chance of waterspouts. Waves 10 to 14 ft occasionally to 18 ft building to 12 to 16 ft occasionally to 21 ft. .MONDAY...North winds to 30 kt becoming northwest 15 to 25 kt in the afternoon. Thundersnow with a chance of waterspouts. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 12 ft occasionally to 16 ft. .MONDAY NIGHT...Northwest winds to 30 kt becoming west 15 to 25 kt. Chance of snow in the evening. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft. $$ KJB