FZUS53 KLOT 080242 NSHLOT Nearshore Marine Forecast National Weather Service Chicago/Romeoville IL 942 PM CDT Tue Jul 7 2026 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>742-081200- Winthrop Harbor to Wilmette Harbor IL- Wilmette Harbor to Northerly Island IL- Northerly Island to Calumet Harbor IL- 942 PM CDT Tue Jul 7 2026 .TONIGHT...Variable winds around 5 kt becoming southwest after midnight. Mostly clear. Waves around 1 ft. .WEDNESDAY...Southwest winds around 10 kt becoming southeast at 10 to 15 kt in the afternoon. Mostly sunny. Waves 1 ft or less building to 1 to 2 ft. .WEDNESDAY NIGHT...South winds around 10 kt becoming southwest. Mostly clear in the evening, then becoming partly cloudy. Waves 1 to 2 ft. .THURSDAY...Southwest winds 10 to 15 kt. Slight chance of showers and thunderstorms in the morning, then showers likely and a chance of thunderstorms in the afternoon. Waves around 1 ft. $$ LMZ743>745-081200- Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN- Burns Harbor to Michigan City IN- 942 PM CDT Tue Jul 7 2026 .TONIGHT...East winds around 5 kt and becoming south after midnight. Clear. Waves around 1 ft. .WEDNESDAY...Southwest winds around 10 kt becoming east in the afternoon. Mostly sunny. Waves 1 ft or less. .WEDNESDAY NIGHT...Southwest winds 10 to 15 kt. Mostly clear in the evening, then becoming partly cloudy. Waves 1 ft or less. .THURSDAY...Southwest winds 10 to 15 kt. Chance of showers and thunderstorms in the afternoon. Waves around 1 ft. $$ DK