Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
994 FZUS53 KLOT 100336 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 936 PM 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>742-101030- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 936 PM CST Sun Nov 9 2025 ...GALE WARNING IN EFFECT UNTIL 6 AM CST MONDAY... .REST OF TONIGHT...Northwest gales to 35 kt becoming northeast late. Snow showers and snow squalls with a chance of waterspouts and a slight chance of thunderstorms. Waves 8 to 12 ft occasionally to 16 ft. .MONDAY...North winds to 30 kt becoming northwest 20 to 25 kt late. Snow showers and snow squalls with a chance of waterspouts and a slight chance of thunderstorms in the morning, then slight chance of snow showers in the afternoon. Waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 6 ft occasionally to 8 ft. .MONDAY NIGHT...Northwest winds to 30 kt becoming west and diminishing to 15 to 20 kt overnight. Slight chance of snow showers in the evening. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft. .TUESDAY...Southwest winds to 30 kt. Chance of snow in the morning. Waves 3 to 5 ft. $$ LMZ743>745-101030- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 936 PM CST Sun Nov 9 2025 ...GALE WARNING IN EFFECT UNTIL 6 AM CST MONDAY... .REST OF TONIGHT...Northwest gales to 40 kt becoming northeast to 35 kt late. Snow showers and snow squalls with a chance of waterspouts and a slight chance of thunderstorms. Waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 12 ft occasionally to 16 ft late. .MONDAY...North winds to 30 kt becoming northwest. Snow showers and snow squalls with a chance of waterspouts and a slight chance of thunderstorms. Waves 7 to 10 ft occasionally to 13 ft. .MONDAY NIGHT...Northwest winds to 30 kt becoming west 15 to 25 kt overnight. Chance of snow showers. Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to 6 ft occasionally to 8 ft late. .TUESDAY...Southwest winds 15 to 25 kt increasing to 30 kt. Chance of snow in the morning. Waves 3 to 5 ft. $$ RC