Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
858 FZUS53 KLOT 221507 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 1007 AM CDT Sun Sep 22 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>742-222130- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 1007 AM CDT Sun Sep 22 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 PM CDT THIS AFTERNOON THROUGH MONDAY EVENING... .REST OF TODAY...Southwest winds 10 to 20 kt becoming northwest 20 to 25 kt late this afternoon. Showers and slight chance of thunderstorms. Waves around 1 ft quickly building to 3 to 5 ft toward evening. .TONIGHT...North winds to 30 kt. Chance of showers in the evening. Waves 5 to 8 ft occasionally to 10 ft building to 6 to 9 ft occasionally to 12 ft. .MONDAY...Northeast winds 15 to 25 kt. Mostly cloudy. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft. .MONDAY NIGHT...Northeast winds 10 to 15 kt becoming east overnight. Slight chance of showers in the evening, then chance of showers overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft. $$ LMZ743>745-222130- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 1007 AM CDT Sun Sep 22 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING THROUGH MONDAY EVENING... .REST OF TODAY...Southwest winds 10 to 15 kt becoming west this afternoon. Showers and slight chance of thunderstorms late in the morning, then showers and a chance of thunderstorms in the afternoon. Waves 1 to 2 ft. .TONIGHT...Northwest winds 15 to 25 kt becoming north and increasing to 30 kt in the evening. Showers likely and slight chance of thunderstorms in the evening, then slight chance of showers overnight. Waves quickly building to 5 to 8 ft occasionally to 10 ft in the evening and building to 6 to 9 ft occasionally to 12 ft overnight. .MONDAY...Northeast winds 15 to 20 kt becoming north. Mostly cloudy. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft occasionally to 8 ft. .MONDAY NIGHT...Northeast winds 10 to 15 kt becoming east overnight. Slight chance of showers in the evening, then chance of showers overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft. $$ Yack