Nearshore Marine Forecast
Issued by NWS Chicago, IL

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524
FZUS53 KLOT 060926
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
426 AM CDT Sun Jul 6 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>742-061515-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
426 AM CDT Sun Jul 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON
THROUGH MONDAY MORNING...

.TODAY...Southwest winds 10 to 15 kt shifting north 20 to 25 kt
in the afternoon. Chance of showers and thunderstorms in the
morning, then showers and thunderstorms likely in the afternoon.
Waves 1 to 2 ft building to 4 to 6 ft occasionally to 8 ft in
the afternoon.
.TONIGHT...North winds 15 to 25 kt. Chance of showers and
thunderstorms in the evening. Waves 4 to 6 ft occasionally to 8
ft.
.MONDAY...North winds 10 to 20 kt. Mostly cloudy in the morning,
then becoming partly cloudy. Waves 4 to 6 ft occasionally to 8
ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...Northeast winds 10 to 15 kt becoming north 5 to
10 kt overnight. Mostly clear. Waves 2 to 4 ft subsiding to 1 to
3 ft.

$$

LMZ743>745-061515-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
426 AM CDT Sun Jul 6 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH
MONDAY MORNING...

.TODAY...Southwest winds 10 to 15 kt becoming north 15 to 25 kt
late. Chance of showers and thunderstorms in the morning, then
showers and thunderstorms likely in the afternoon. Waves 1 to 2
ft building to 2 to 4 ft late.
.TONIGHT...North winds 15 to 25 kt. Chance of showers and
thunderstorms in the evening, then slight chance of showers and
thunderstorms overnight. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY...North winds 15 to 20 kt. Mostly cloudy in the morning,
then becoming partly cloudy. Waves 4 to 6 ft occasionally to 8
ft subsiding to 3 to 5 ft.
.MONDAY NIGHT...North winds 10 to 15 kt becoming east 5 to 10 kt
overnight. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft.

$$