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Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
256 FZUS53 KLOT 172023 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 323 PM CDT Sat Aug 17 2024 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>742-180400- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 323 PM CDT Sat Aug 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...North winds 10 to 15 kt increasing to 15 to 20 kt. Scattered showers and a chance of thunderstorms in the evening, then a chance of showers after midnight. Waves 1 to 2 ft building to 2 to 4 ft. .SUNDAY...North winds 20 to 25 kt. Slight chance of showers. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. .SUNDAY NIGHT...North winds 15 to 25 kt. Mostly clear. Waves 5 to 8 ft occasionally to 10 ft. .MONDAY...North winds 15 to 25 kt. Mostly sunny. Waves 4 to 7 ft occasionally to 9 ft. $$ LMZ743>745-180400- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 323 PM CDT Sat Aug 17 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH LATE MONDAY NIGHT... .TONIGHT...North winds 10 to 15 kt increasing to 15 to 20 kt. Scattered showers and slight chance of thunderstorms in the evening, then a chance of showers after midnight. Waves 2 to 4 ft. .SUNDAY...North winds to 30 kt. Chance of showers. Waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft. .SUNDAY NIGHT...North winds to 30 kt diminishing to 20 to 25 kt. Mostly clear. Waves 7 to 10 ft occasionally to 13 ft. .MONDAY...North winds 20 to 25 kt. Mostly sunny. Waves 4 to 7 ft occasionally to 9 ft. $$ Petr