846
FZUS53 KLOT 300817
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
317 AM CDT Sat Aug 30 2025

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>742-302115-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
317 AM CDT Sat Aug 30 2025

.TODAY...East winds 5 to 10 kt becoming northeast in the afternoon.
Isolated showers in the morning. Waves around 1 ft.
.TONIGHT...Northeast winds 5 to 10 kt becoming east late. Mostly
clear. Waves around 1 ft.
.SUNDAY...East winds 5 to 10 kt becoming northeast. Mostly sunny.
Waves around 1 ft.
.SUNDAY NIGHT...Northeast winds 5 to 10 kt becoming east
overnight. Clear. Waves around 1 ft.

$$

LMZ743>745-302115-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
317 AM CDT Sat Aug 30 2025

.TODAY...East winds 5 to 10 kt becoming northeast in the afternoon.
Isolated showers in the morning. Waves around 1 ft.
.TONIGHT...Northeast winds 5 to 10 kt becoming east late. Mostly
clear. Waves around 1 ft.
.SUNDAY...Southeast winds 5 to 10 kt becoming northeast in the
afternoon. Sunny. Waves around 1 ft.
.SUNDAY NIGHT...Northeast winds 5 to 10 kt becoming east
overnight. Clear. Waves around 1 ft.

$$

KJB