097
FZUS53 KLOT 221411
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
911 AM CDT Fri Aug 22 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>742-222115-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
911 AM CDT Fri Aug 22 2025

.REST OF TODAY...East winds 5 to 10 kt becoming southeast late.
Partly cloudy. Waves 1 to 2 ft.
.TONIGHT...South winds 5 to 10 kt becoming southwest 10 to 15 kt
overnight. Partly cloudy in the evening, then becoming mostly
cloudy. Waves around 1 ft.
.SATURDAY...West winds 10 to 15 kt. Slight chance of showers in
the morning, then slight chance of showers and thunderstorms in
the afternoon. Waves 1 to 2 ft.
.SATURDAY NIGHT...Northwest winds 10 to 15 kt. Mostly clear.
Waves 1 to 3 ft.

$$

LMZ743>745-222115-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
911 AM CDT Fri Aug 22 2025

.REST OF TODAY...South winds less than 10 kt becoming northeast
around 10 kt in the afternoon. Partly cloudy late in the morning
then clearing. Waves 1 to 2 ft.
.TONIGHT...Southeast winds 5 to 10 kt becoming southwest 10 to
15 kt overnight. Partly cloudy in the evening, then becoming
mostly cloudy. Waves 1 to 2 ft.
.SATURDAY...Southwest winds 10 to 15 kt becoming west. Slight
chance of showers in the morning, then chance of showers and
slight chance of thunderstorms in the afternoon. Waves 1 to 2 ft.
.SATURDAY NIGHT...Northwest winds 10 to 20 kt. Mostly clear.
Waves 2 to 4 ft.

$$

KJB