213
FZUS53 KLOT 171458
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
958 AM CDT Thu Jul 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>743-172130-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
958 AM CDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...North winds 15 to 20 kt. Mostly cloudy. Waves 3
to 6 ft occasionally to 8 ft.
.TONIGHT...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Partly cloudy in the evening then clearing. Waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft late.
.FRIDAY...East winds around 10 kt. Mostly sunny. Waves 3 to 5 ft
early in the morning subsiding to 1 to 3 ft by afternoon.
.FRIDAY NIGHT...East winds around 10 kt becoming southeast
overnight. Chance of showers and thunderstorms, mainly after
midnight. Waves around 1 ft.

$$

LMZ744-745-172130-
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
958 AM CDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...North winds 15 to 20 kt. Mostly cloudy. Waves
4 to 7 ft occasionally to 9 ft.
.TONIGHT...North winds 10 to 20 kt becoming northeast 10 to 15 kt
overnight. Mostly cloudy in the evening, then becoming partly
cloudy. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5
ft late.
.FRIDAY...East winds 5 to 10 kt becoming northeast in the
afternoon. Mostly sunny. Waves 3 to 5 ft early in the morning
gradually subsiding to 1 to 2 ft in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 kt becoming southeast
overnight. Chance of showers and thunderstorms, mainly after
midnight. Waves around 1 ft.

$$

Petr