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FZUS53 KLOT 171505
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
1005 AM CDT Fri Oct 17 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>742-172115-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1005 AM CDT Fri Oct 17 2025

.REST OF TODAY...South winds 15 to 25 kt. Partly cloudy. Waves 2
to 4 ft.
.TONIGHT...South winds 15 to 25 kt. Showers likely and slight
chance of thunderstorms overnight. Waves 2 to 4 ft.
.SATURDAY...Southwest winds 15 to 20 kt. Showers and a chance of
thunderstorms. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SATURDAY NIGHT...Southwest winds 10 to 15 kt becoming west and
increasing to 15 to 25 kt overnight. Showers and a chance of
thunderstorms. Waves 1 to 2 ft building to 2 to 4 ft.

$$

LMZ743>745-172115-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1005 AM CDT Fri Oct 17 2025

.REST OF TODAY...South winds 15 to 20 kt. Mostly cloudy. Waves
1 to 2 ft.
.TONIGHT...South winds 15 to 25 kt. Chance of showers overnight.
Waves 1 to 3 ft.
.SATURDAY...South winds 15 to 20 kt becoming southwest. Showers
and a chance of thunderstorms. Waves 1 to 3 ft.
.SATURDAY NIGHT...Southwest winds 10 to 15 kt becoming west and
increasing to 15 to 25 kt overnight. Showers and a chance of
thunderstorms. Waves 1 to 2 ft building to 3 to 5 ft.

$$

Yack