159
FZUS53 KLOT 170846
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
346 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>743-171545-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
346 AM CDT Thu Jul 17 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 AM CDT THIS MORNING
THROUGH LATE TONIGHT...

.TODAY...Northwest winds 10 to 20 kt becoming north this
morning. Mostly cloudy. Waves 3 to 5 ft building to 4 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.

$$

LMZ744-745-171545-
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
346 AM CDT Thu Jul 17 2025

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

.TODAY...Northwest winds 20 to 25 kt becoming north 15 to 20 kt
this morning. 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.

$$

- Izzi