947
FZUS53 KLOT 120810
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
310 AM CDT Sat Jul 12 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>742-122145-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
310 AM CDT Sat Jul 12 2025

.EARLY THIS MORNING...Southeast winds 10 to 15 kt becoming
southeast around 10 kt toward sunrise. Cloudy. Waves 1 to 3 ft.
.TODAY...Southwest winds 10 to 15 kt. Slight chance of showers in
the afternoon. Waves around 1 ft.
.TONIGHT...West winds 5 to 10 kt. Slight chance of showers until
around sunset. Waves around 1 ft.
.SUNDAY...West winds 5 to 10 kt becoming southwest in the
afternoon. Partly cloudy. Waves 1 ft or less.
.SUNDAY NIGHT...Southwest winds 5 to 10 kt. Mostly clear. Waves
1 ft or less.

$$

LMZ743>745-122145-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
310 AM CDT Sat Jul 12 2025

.EARLY THIS MORNING...South winds 10 to 15 kt. Cloudy. Waves
around 1 ft.
.TODAY...Southwest winds 10 to 15 kt. Slight chance of showers.
Waves 1 to 2 ft.
.TONIGHT...West winds 5 to 10 kt becoming northwest 10 to 15 kt
late. Slight chance of showers early in the evening. Waves 1 to 2
ft.
.SUNDAY...Northwest winds 5 to 10 kt becoming north in the
afternoon. Mostly sunny in the morning, then becoming partly
cloudy. Waves 1 to 2 ft.
.SUNDAY NIGHT...Southeast winds 5 to 10 kt becoming southwest
overnight. Mostly clear. Waves 1 ft or less.

$$

- Izzi