FZUS53 KLOT 150859
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
359 AM CDT Wed Apr 15 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>742-152115-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
359 AM CDT Wed Apr 15 2026

.EARLY THIS MORNING...South winds 10 to 20 kt. Patchy fog.
Showers and scattered thunderstorms. Variable winds in and near
thunderstorms. Waves 1 to 3 ft.
.TODAY...Southwest winds 15 to 20 kt becoming south. Patchy fog
in the morning. Showers with thunderstorms likely. Waves 1 to 3
ft.
.TONIGHT...South winds 15 to 20 kt diminishing to 10 to 15 kt.
Showers with thunderstorms likely. Waves 1 to 3 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming west in the
afternoon. Showers likely and a chance of thunderstorms. Waves 1
to 2 ft.
.THURSDAY NIGHT...North winds around 10 kt becoming southeast
overnight. Mostly cloudy. Waves 1 to 2 ft.

$$

LMZ743>745-152115-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
359 AM CDT Wed Apr 15 2026

.EARLY THIS MORNING...Southwest winds 10 to 20 kt. Patchy fog.
Showers and scattered thunderstorms. Waves 1 to 3 ft.
.TODAY...Southwest winds 15 to 20 kt. Patchy fog in the morning.
Showers with thunderstorms likely. Waves 1 to 3 ft.
.TONIGHT...South winds 15 to 20 kt. Showers with thunderstorms
likely. Waves 1 to 2 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming west in the
afternoon. Showers likely and a chance of thunderstorms. Waves 1
to 2 ft.
.THURSDAY NIGHT...North winds around 10 kt becoming northeast
overnight. Mostly cloudy. Waves 1 to 2 ft.

$$

Petr