337
FZUS53 KLOT 070828
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
328 AM CDT Tue Oct 7 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>742-071545-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
328 AM CDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON...

.TODAY...North winds 15 to 25 kt. Chance of showers and slight
chance of thunderstorms early in the morning. Waves 3 to 6 ft
occasionally to 8 ft.
.TONIGHT...North winds 10 to 20 kt increasing to 20 to 25 kt.
Mostly clear. Waves 3 to 5 ft building to 4 to 6 ft occasionally
to 8 ft.
.WEDNESDAY...Northeast winds 20 to 25 kt diminishing to 10 to
15 kt. Partly cloudy in the morning then clearing. Waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt becoming east
overnight. Clear. Waves 2 to 4 ft.

$$

LMZ743>745-071545-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
328 AM CDT Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY MORNING...

.TODAY...North winds 20 to 25 kt. Showers likely and a chance of
thunderstorms early in the morning. Waves 3 to 5 ft building to 4
to 7 ft occasionally to 9 ft.
.TONIGHT...North winds 20 to 25 kt. Mostly clear. Waves 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...Northeast winds 20 to 25 kt diminishing to around
15 kt. Partly cloudy in the morning then clearing. Waves 4 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft late.
.WEDNESDAY NIGHT...Northeast winds 10 to 15 kt becoming east
overnight. Clear. Waves 2 to 4 ft subsiding to 1 to 3 ft.

$$

- Izzi