294
FZUS53 KLOT 220831
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
331 AM CDT Tue Jul 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>742-222130-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
331 AM CDT Tue Jul 22 2025

.EARLY THIS MORNING...East winds 5 to 10 kt becoming southeast.
Partly cloudy. Waves 1 to 2 ft.
.TODAY...Southeast winds 10 to 20 kt becoming east late. Partly
cloudy in the morning then clearing. Waves 1 to 3 ft building to
2 to 4 ft.
.TONIGHT...Southeast winds 10 to 20 kt becoming south late.
Mostly clear in the evening, then becoming partly cloudy. Waves
1 to 3 ft.
.WEDNESDAY...South winds 10 to 20 kt. Partly cloudy in the
morning then clearing. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...South winds 10 to 15 kt becoming southwest.
Mostly clear. Waves 1 to 3 ft.

$$

LMZ743>745-222130-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
331 AM CDT Tue Jul 22 2025

.EARLY THIS MORNING...Southeast winds around 10 kt. Partly
cloudy. Waves 1 to 2 ft.
.TODAY...Southeast winds 10 to 20 kt becoming east 10 to 15 kt
late. Partly cloudy in the morning, then becoming mostly sunny.
Waves 1 to 2 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming south late.
Mostly clear. Waves 1 to 2 ft.
.WEDNESDAY...South winds 10 to 15 kt. Mostly sunny. Waves 1 to
2 ft.
.WEDNESDAY NIGHT...South winds 10 to 15 kt. Mostly clear. Waves
around 1 ft.

$$

KJB