Nearshore Marine Forecast
Issued by NWS Chicago, IL

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059
FZUS53 KLOT 031559
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
959 AM CST Wed Dec 3 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>743-032215-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
959 AM CST Wed Dec 3 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM CST THIS EVENING
THROUGH THURSDAY MORNING...

.REST OF TODAY...Southwest winds 15 to 25 kt becoming west 15 to
20 kt in the early afternoon then shifting to northwest. Slight
chance of snow late in the morning, then chance of snow in the
afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TONIGHT...Northwest winds 15 to 20 kt increasing to 20 to 25 kt
in the mid to late evening. Mostly cloudy in the evening, then
becoming partly cloudy. Waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
.THURSDAY...Northwest winds 15 to 20 kt becoming west and
diminishing to around 10 kt in the afternoon. Partly cloudy in
the morning then clearing. Waves 3 to 6 ft occasionally to 8 ft
subsiding to 1 to 3 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt. Partly cloudy.
Waves 2 to 4 ft.

$$

LMZ744-745-032215-
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
959 AM CST Wed Dec 3 2025

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

.REST OF TODAY...Southwest winds 20 to 25 kt becoming west 15 to
25 kt in the afternoon. Chance of snow in the afternoon. Waves 3
to 5 ft.
.TONIGHT...Northwest winds 20 to 25 kt. Chance of snow in the
evening. Waves 3 to 5 ft building to 6 to 9 ft occasionally to 12
ft.
.THURSDAY...Northwest winds 20 to 25 kt becoming west and
diminishing to 10 to 15 kt in the afternoon. Mostly cloudy in
the morning, then becoming partly cloudy. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 3 to 5 ft late.
.THURSDAY NIGHT...South winds 10 to 20 kt. Partly cloudy. Waves
2 to 4 ft.

$$

RC