083
FZUS53 KLOT 200236
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
936 PM CDT Sat Jul 19 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>742-200915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
936 PM CDT Sat Jul 19 2025

.REST OF TONIGHT...Southwest winds 5 to 10 kt becoming north and
increasing to 10 to 20 kt after midnight. Partly cloudy late in
the evening, then becoming mostly cloudy. Waves around 1 ft
building to 2 to 4 ft late.
.SUNDAY...Northeast winds 15 to 20 kt. Chance of showers in the
morning, then slight chance of showers in the afternoon. Waves
3 to 5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt. Slight chance of
showers. Waves 3 to 5 ft.
.MONDAY...East winds around 15 kt. Partly cloudy. Waves 3 to 5 ft
subsiding to 2 to 4 ft.

$$

LMZ743>745-200915-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
936 PM CDT Sat Jul 19 2025

.REST OF TONIGHT...Southwest winds 5 to 10 kt becoming northwest
10 to 15 kt late. Partly cloudy late in the evening, then becoming
mostly cloudy. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north 10 to 15 kt.
Chance of showers and slight chance of thunderstorms. Waves 2 to
4 ft.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt. Chance of showers
and slight chance of thunderstorms in the evening, then chance of
showers overnight. Waves 2 to 4 ft.
.MONDAY...East winds 10 to 15 kt. Partly cloudy. Waves 2 to 4 ft
subsiding to 1 to 3 ft.

$$

Yack