508
FZUS53 KLOT 241951
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
251 PM CDT Sun Aug 24 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>742-250330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
251 PM CDT Sun Aug 24 2025

.TONIGHT...Northwest winds 15 to 25 kt. Slight chance of showers
in the evening. Waves 2 to 4 ft.
.MONDAY...Northwest winds 15 to 25 kt. Mostly sunny in the
morning, then becoming partly cloudy. Waves 2 to 4 ft subsiding to
1 to 3 ft.
.MONDAY NIGHT...Northwest winds 10 to 15 kt. Partly cloudy in the
evening, then becoming mostly clear. Waves 1 to 3 ft.
.TUESDAY...Northwest winds 10 to 15 kt becoming north in the
afternoon. Mostly sunny. Waves 1 to 3 ft.

$$

LMZ743-744-250330-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
251 PM CDT Sun Aug 24 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING
THROUGH MONDAY MORNING...

.TONIGHT...Northwest winds 15 to 25 kt. Slight chance of showers
in the evening. Waves 2 to 4 ft building to 3 to 6 ft in the
evening.
.MONDAY...Northwest winds 15 to 25 kt. Partly cloudy. Waves 3 to
6 ft subsiding to 2 to 4 ft.
.MONDAY NIGHT...Northwest winds 10 to 15 kt. Partly cloudy in the
evening then clearing. Waves 2 to 4 ft.
.TUESDAY...Northwest winds 10 to 15 kt becoming north in the
afternoon. Mostly sunny. Waves 2 to 4 ft.

$$

LMZ745-250330-
Burns Harbor to Michigan City IN-
251 PM CDT Sun Aug 24 2025

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

.TONIGHT...Northwest winds 20 to 25 kt. Slight chance of
waterspouts. Slight chance of showers. Waves 3 to 6 ft
occasionally to 8 ft.
.MONDAY...Northwest winds 15 to 25 kt. Slight chance of showers
in the morning. Waves 3 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...Northwest winds 15 to 20 kt. Partly cloudy. Waves
2 to 4 ft.
.TUESDAY...Northwest winds around 15 kt becoming north. Mostly
sunny. Waves 3 to 5 ft.

$$

Kluber