516
FZUS53 KLOT 300153
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
853 PM CDT Mon Sep 29 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>742-300930-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
853 PM CDT Mon Sep 29 2025

.REST OF TONIGHT...Variable winds less than 10 kt. Mostly clear.
Waves 1 ft or less.
.TUESDAY...Light and variable winds becoming northeast and
increasing to 10 to 15 kt in the afternoon. Mostly sunny. Waves 1
ft or less building to 1 to 3 ft.
.TUESDAY NIGHT...Northeast winds around 20 kt becoming east
overnight. Partly cloudy in the evening, then becoming mostly
cloudy. Waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft. A small craft advisory will likely be needed.
.WEDNESDAY...East winds 10 to 15 kt. Mostly cloudy. Waves 3 to
5 ft subsiding to 2 to 4 ft.

$$

LMZ743>745-300930-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
853 PM CDT Mon Sep 29 2025

.REST OF TONIGHT...East winds 5 to 10 kt. Clear. Waves around 1
ft.
.TUESDAY...Northeast winds 5 to 10 kt becoming north 10 to 15 kt
in the afternoon. Mostly sunny. Waves 1 to 2 ft.
.TUESDAY NIGHT...Northeast winds 10 to 15 kt becoming east
overnight. Mostly clear in the evening, then becoming mostly
cloudy. Waves 1 to 3 ft building to 2 to 4 ft.
.WEDNESDAY...East winds 10 to 15 kt. Mostly cloudy. Waves 1 to
3 ft.

$$

- Izzi