FZUS53 KLOT 240242
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
942 PM CDT Sun Aug 23 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>742-240930-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
942 PM CDT Sun Aug 23 2026

.REST OF TONIGHT...Northwest winds 10 to 15 kt diminishing to 5 to
10 kt. Mostly clear. Waves 1 to 3 ft. 
.MONDAY...Northwest winds 10 to 15 kt becoming northeast in the
afternoon. Increasing cloudiness. Waves 1 to 2 ft. 
.MONDAY NIGHT...East winds around 10 kt becoming southwest less
than 10 kt overnight. Decreasing cloudiness. Waves 1 to 2 ft. 
.TUESDAY...Southwest winds less than 10 kt becoming southeast
10 to 15 kt in the afternoon. Increasing cloudiness. Waves 1 to 2
ft.


$$

LMZ743>745-240930-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
942 PM CDT Sun Aug 23 2026

.REST OF TONIGHT...Northwest winds 5 to 10 kt. Mostly clear. 
Waves 2 to 4 ft. 
.MONDAY...Northwest winds 10 to 15 kt becoming north in the
afternoon. Increasing cloudiness. Waves 1 to 3 ft. 
.MONDAY NIGHT...East winds around 10 kt becoming southwest less
than 10 kt overnight. Decreasing cloudiness. Waves 1 to 2 ft. 
.TUESDAY...South winds less than 10 kt becoming southeast 10 to 15
kt in the afternoon. Mostly sunny. Waves around 1 ft. 

$$

Borchardt