877
FZUS53 KLOT 222017
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
317 PM CDT Thu May 22 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.

LMZ740-230330-
Winthrop Harbor to Wilmette Harbor IL-
317 PM CDT Thu May 22 2025

.TONIGHT...North winds 15 to 20 kt becoming west 5 to 10 kt
overnight. Partly cloudy. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.FRIDAY...North winds 5 to 10 kt becoming northeast in the
afternoon. Partly cloudy in the morning then clearing. Waves 1 to
2 ft.
.FRIDAY NIGHT...East winds 5 to 10 kt becoming north overnight.
Partly cloudy in the evening then clearing. Waves 1 to 2 ft.
.SATURDAY...Northeast winds 5 to 10 kt. Mostly sunny. Waves
around 1 ft.

$$

LMZ741-742-230330-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
317 PM CDT Thu May 22 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING...

.TONIGHT...North winds 15 to 25 kt becoming west and diminishing
to 5 to 10 kt late. Partly cloudy. Waves 3 to 6 ft occasionally to
8 ft subsiding to 2 to 4 ft.
.FRIDAY...Northwest winds 5 to 10 kt becoming northeast 10 to
15 kt in the afternoon. Partly cloudy in the morning then
clearing. Waves 1 to 3 ft.
.FRIDAY NIGHT...East winds 5 to 10 kt becoming north overnight.
Partly cloudy in the evening then clearing. Waves 1 to 2 ft.
.SATURDAY...Northeast winds 5 to 10 kt increasing to 10 to 15 kt.
Mostly sunny. Waves 1 to 2 ft.

$$

LMZ743>745-230330-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
317 PM CDT Thu May 22 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT FRIDAY...

.TONIGHT...North winds 20 to 25 kt becoming northwest and
diminishing to 5 to 10 kt late. Partly cloudy. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 2 to 4 ft late.
.FRIDAY...Northwest winds 5 to 10 kt becoming northeast 10 to
15 kt in the afternoon. Partly cloudy in the morning then
clearing. Waves 1 to 3 ft.
.FRIDAY NIGHT...Northeast winds 5 to 10 kt becoming north. Partly
cloudy in the evening, then becoming mostly clear. Waves 1 to
2 ft.
.SATURDAY...North winds 5 to 10 kt becoming northeast 10 to
15 kt. Mostly sunny. Waves 1 to 2 ft.

$$

Yack