Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 020916
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
316 AM CST Tue Dec 2 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>742-021615-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
316 AM CST Tue Dec 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY MORNING...

.TODAY...Northwest winds 10 to 15 kt becoming southwest in the
afternoon. Mostly cloudy. Waves 1 to 3 ft.
.TONIGHT...Southwest winds 10 to 20 kt increasing to 20 to 25 kt.
Mostly cloudy. Waves 1 to 3 ft building to 2 to 4 ft.
.WEDNESDAY...Southwest winds 20 to 25 kt becoming northwest in
the afternoon. Chance of snow in the morning, then snow likely in
the afternoon. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Northwest winds 20 to 25 kt. Chance of snow in
the evening. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ743>745-021615-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
316 AM CST Tue Dec 2 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH
THURSDAY AFTERNOON...

.TODAY...Northwest winds 10 to 15 kt becoming southwest in the
afternoon. Mostly cloudy. Waves 1 to 3 ft.
.TONIGHT...Southwest winds 10 to 20 kt increasing to 20 to 25 kt.
Mostly cloudy. Waves 1 to 3 ft building to 2 to 4 ft.
.WEDNESDAY...Southwest winds 20 to 25 kt becoming northwest in
the afternoon. Slight chance of snow in the morning, then snow
likely in the afternoon. Waves 3 to 5 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow in
the evening. Waves building to 6 to 9 ft occasionally to 12 ft.

$$