Nearshore Marine Forecast
Issued by NWS Chicago, IL

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202
FZUS53 KLOT 150827
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
227 AM CST Sat Nov 15 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>743-152230-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
227 AM CST Sat Nov 15 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CST TODAY THROUGH
SUNDAY AFTERNOON...

.TODAY...Southwest winds 15 to 25 kt becoming northwest 20 to 25
kt. Mostly cloudy in the morning, then becoming partly cloudy.
Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TONIGHT...Northwest winds 20 to 25 kt increasing to 30 kt with
occasional gales to 35 kt possible. Partly cloudy in the
evening then clearing. Waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft.
.SUNDAY...Northwest winds 20 to 25 kt diminishing to 15 to 20 kt.
Sunny. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.SUNDAY NIGHT...Northwest winds 15 to 20 kt diminishing to 10 to
15 kt. Clear. Waves 2 to 4 ft.

$$

LMZ744-745-152230-
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
227 AM CST Sat Nov 15 2025

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

.TODAY...Southwest winds 15 to 25 kt becoming northwest late.
Mostly cloudy in the morning, then becoming partly cloudy. Waves 2
to 4 ft.
.TONIGHT...Northwest winds 20 to 25 kt increasing to 30 kt with
occasional gales to 35 kt possible. Partly cloudy in the evening,
then becoming clear. Waves 3 to 5 ft building to 7 to 10 ft
occasionally to 13 ft.
.SUNDAY...Northwest winds to 30 kt. Sunny. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 5 to 8 ft occasionally to
10 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Clear. Waves 4 to 7 ft occasionally to 9 ft.

$$

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