815
FZUS53 KLOT 180309
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
909 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>742-181015-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
909 PM CST Mon Nov 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM CST TUESDAY THROUGH
LATE TUESDAY NIGHT...

.REST OF TONIGHT...Southeast winds around 10 kt increasing to 15
to 20 kt after midnight. Periods of rain, mainly 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 showers 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>745-181015-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
909 PM CST Mon Nov 17 2025

.REST OF TONIGHT...East winds around 10 kt increasing to 15 to 20
kt late. Periods of rain, mainly after midnight. Waves 1 to 3 ft
building to 2 to 4 ft.
.TUESDAY...East winds 15 to 20 kt. Occasional showers 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.

$$
KJB