638
FZUS53 KLOT 010912
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
312 AM CST Mon Dec 1 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>742-011615-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
312 AM CST Mon Dec 1 2025

.TODAY...West winds 10 to 15 kt becoming south this morning.
Snow in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TONIGHT...South winds 10 to 15 kt becoming west overnight. Snow
in the evening, then chance of snow overnight. Waves 1 to 3 ft.
.TUESDAY...West winds 10 to 15 kt. Mostly cloudy. Waves 1 to 3
ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt. Mostly cloudy.
Waves building to 2 to 4 ft.

$$

LMZ743>745-011615-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
312 AM CST Mon Dec 1 2025

.TODAY...South winds 10 to 15 kt. Snow in the afternoon. Waves 3
to 5 ft subsiding to 1 to 3 ft.
.TONIGHT...South winds 10 to 15 kt becoming west overnight. Snow.
Waves 1 to 3 ft.
.TUESDAY...West winds 10 to 15 kt. Slight chance of snow. Waves
1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 10 to 15 kt increasing to 15 to
20 kt. Mostly cloudy. Waves building to 2 to 4 ft.

$$