Nearshore Marine Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
414 FZUS53 KLOT 220859 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 359 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>742-221530- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 359 AM CDT Sun Sep 22 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH MONDAY EVENING... .TODAY...Variable winds less than 10 kt becoming southwest winds 10 to 15 kt this morning, then shifting to north and increasing to 20 to 25 kt late this afternoon. Showers and a 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 and slight chance of thunderstorms 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 diminishing to 10 to 20 kt in the afternoon. 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. $$ LMZ743>745-221530- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 359 AM CDT Sun Sep 22 2024 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY EVENING... .TODAY...Variable winds less than 10 kt becoming southwest winds 10 to 15 kt this morning. Showers and a chance of thunderstorms. Waves 1 to 2 ft. .TONIGHT...Winds shifting to north and increasing to 30 kt early in the evening. Showers likely and slight chance of thunderstorms in the evening. Waves waves quickly building to 4 to 7 ft occasionally to 9 ft early in the evening and building to 6 to 9 ft occasionally to 12 ft overnight. .MONDAY...Northeast winds 15 to 25 kt becoming north 10 to 20 kt in the afternoon. Mostly cloudy. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft. .MONDAY NIGHT...Northeast winds 10 to 15 kt becoming east overnight. Slight chance of showers in the evening, then chance of showers overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft. $$ - Izzi