309
FZUS53 KLOT 172100
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
300 PM CST Mon Nov 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>742-180415-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
300 PM CST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH
LATE TUESDAY NIGHT...

.TONIGHT...East winds around 5 kt becoming southeast and
increasing to 15 to 20 kt after midnight. Slight chance of rain
in the evening, then rain after midnight. Waves 1 to 3 ft
building to 3 to 5 ft.
.TUESDAY...Southeast winds 15 to 25 kt becoming east in the
afternoon. Occasional rain and drizzle. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt becoming northeast 10 to
15 kt. Cloudy. Waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft.
.WEDNESDAY...East winds 10 to 15 kt becoming southeast. Cloudy.
Waves 2 to 4 ft subsiding to 1 to 3 ft.

$$

LMZ743>745-180415-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
300 PM CST Mon Nov 17 2025

.TONIGHT...East winds around 5 kt increasing to 15 to 20 kt late.
Slight chance of rain in the evening, then rain after midnight.
Waves 1 to 3 ft building to 2 to 4 ft.
.TUESDAY...East winds 15 to 20 kt. Occasional rain and drizzle.
Waves 2 to 4 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt. Cloudy. Waves 2 to 4 ft.
.WEDNESDAY...East winds 10 to 15 kt diminishing to around 5 kt.
Cloudy. Waves 1 to 3 ft.

$$

Yack