477
FZUS53 KLOT 130825
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
325 AM CDT Mon Oct 13 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>742-131515-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
325 AM CDT Mon Oct 13 2025

.TODAY...Southeast winds 10 to 15 kt becoming east 5 to 10 kt
this afternoon. Mostly cloudy. Waves 2 to 4 ft subsiding to 1 to
2 ft.
.TONIGHT...Northeast winds 5 to 10 kt becoming north 10 to 15 kt
overnight. Mostly cloudy. Waves 1 to 2 ft.
.TUESDAY...North winds 10 to 15 kt increasing to 15 to 20 kt.
Partly cloudy. Waves 3 to 5 ft building to 4 to 6 ft occasionally
to 8 ft. A small craft advisory will likely be needed.
.TUESDAY NIGHT...Northeast winds 15 to 20 kt. Chance of showers,
mainly overnight. Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ743>745-131515-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
325 AM CDT Mon Oct 13 2025

.TODAY...Southeast winds 10 to 15 kt becoming northeast 5 to 10
kt this afternoon. Mostly cloudy. Waves 1 to 2 ft.
.TONIGHT...Northeast winds 5 to 10 kt. Mostly cloudy. Waves 1
to 2 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north 15 to 20
kt. Partly cloudy in the morning then clearing. Waves 1 to 3 ft
building to 3 to 5 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Chance of showers overnight. Waves 4 to 6 ft occasionally to 8
ft. A small craft advisory will likely be needed.

$$