Nearshore Marine Forecast
Issued by NWS Chicago, IL

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935
FZUS53 KLOT 131507
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
907 AM CST Thu Nov 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>742-132215-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
907 AM CST Thu Nov 13 2025

.REST OF TODAY...West winds 10 to 15 kt becoming southwest early
in the afternoon. Mostly sunny in the morning, then becoming
partly cloudy in the afternoon. Waves 1 to 2 ft.
.TONIGHT...Southwest winds around 10 kt becoming south. Mostly
cloudy in the evening then clearing. Waves 1 to 2 ft.
.FRIDAY...South winds around 10 kt. Sunny. Waves 1 to 2 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt. Partly cloudy in the
evening, then becoming mostly cloudy. Waves 1 to 3 ft building to
2 to 4 ft.

$$

LMZ743>745-132215-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
907 AM CST Thu Nov 13 2025

.REST OF TODAY...West winds 10 to 20 kt becoming southwest and
diminishing to around 10 kt this afternoon. Mostly sunny. Waves 3
to 5 ft subsiding to 1 to 3 ft in the afternoon.
.TONIGHT...South winds around 10 kt. Partly cloudy. Waves 1 to
2 ft.
.FRIDAY...South winds around 10 kt. Mostly sunny. Waves around
1 ft.
.FRIDAY NIGHT...South winds 10 to 15 kt increasing to 15 to
20 kt. Partly cloudy in the evening, then becoming mostly cloudy.
Waves 1 to 3 ft.

$$
KJB