Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 010401
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
1001 PM CST Sun Nov 30 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>742-011045-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1001 PM CST Sun Nov 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 AM CST MONDAY...

.REST OF TONIGHT...Northwest winds 10 to 20 kt. Partly cloudy
late in the evening, then becoming mostly cloudy. Waves 3 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.MONDAY...West winds 10 to 15 kt becoming south in the afternoon.
Snow in the afternoon. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.MONDAY NIGHT...South winds 10 to 15 kt becoming west overnight.
Snow in the evening, then chance of snow overnight. Waves 1 to
2 ft.
.TUESDAY...West winds 10 to 15 kt. Slight chance of snow showers
in the afternoon. Waves 1 to 2 ft.

$$

LMZ743>745-011045-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1001 PM CST Sun Nov 30 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM CST MONDAY...

.REST OF TONIGHT...Northwest winds 10 to 20 kt becoming west and
diminishing to around 10 kt late. Mostly cloudy. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 3 to 6 ft occasionally to 8 ft.
.MONDAY...South winds 10 to 15 kt. Snow in the afternoon. Waves
3 to 5 ft subsiding to 1 to 3 ft.
.MONDAY NIGHT...Southeast winds 10 to 15 kt becoming southwest
overnight. Snow in the evening, then chance of snow overnight.
Waves 1 to 3 ft.
.TUESDAY...West winds 10 to 15 kt. Slight chance of snow in the
morning, then slight chance of snow showers in the afternoon.
Waves 1 to 3 ft.

$$

Petr