979
FZUS53 KLOT 202142
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
342 PM CST Thu Nov 20 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>742-210415-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
342 PM CST Thu Nov 20 2025

.TONIGHT...Southwest winds 10 to 15 kt becoming northwest
overnight. Patchy drizzle. Waves around 1 ft.
.FRIDAY...North winds around 10 kt. Mostly cloudy. Waves 1 to
2 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt. Cloudy in the evening,
then clearing. Waves 1 to 3 ft building to 2 to 4 ft.
.SATURDAY...Northwest winds around 10 kt becoming southwest in
the afternoon. Partly cloudy. Waves 2 to 4 ft subsiding to 1 to
2 ft.

$$

LMZ743>745-210415-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
342 PM CST Thu Nov 20 2025

.TONIGHT...Southwest winds 10 to 15 kt becoming northwest
overnight. Patchy drizzle. Waves 1 to 2 ft.
.FRIDAY...North winds around 10 kt. Cloudy. Waves 1 to 2 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt becoming northeast.
Slight chance of rain in the evening. Waves 1 to 3 ft building to
2 to 4 ft.
.SATURDAY...East winds around 10 kt becoming southwest in the
afternoon. Partly cloudy. Waves 2 to 4 ft subsiding to 1 to 2 ft.

$$

Ogorek