418
FZUS53 KLOT 060338
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
938 PM CST Fri Dec 5 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>742-061015-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
938 PM CST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...Southwest winds 20 to 25 kt becoming northwest 15
to 25 kt after midnight. Slight chance of snow. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.SATURDAY...Northwest winds 10 to 15 kt becoming west. Mostly
cloudy. Waves 1 to 2 ft.
.SATURDAY NIGHT...West winds around 5 kt becoming southwest
overnight. Snow. Waves 1 to 2 ft.
.SUNDAY...North winds 10 to 20 kt increasing to 20 to 25 kt. Snow
likely in the morning, then slight chance of snow in the
afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft.

$$

LMZ743>745-061015-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
938 PM CST Fri Dec 5 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT CST TONIGHT...

.REST OF TONIGHT...Southwest winds 20 to 25 kt becoming northwest
15 to 25 kt after midnight. Slight chance of snow, possibly mixed
with some freezing drizzle. Waves 2 to 4 ft.
.SATURDAY...West winds 10 to 15 kt. Mostly cloudy. Waves 2 to 4
ft subsiding to 1 to 3 ft.
.SATURDAY NIGHT...South winds around 5 kt becoming around 10 kt
overnight. Snow. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 15 kt becoming north and
increasing to 15 to 25 kt in the afternoon. Snow likely in the
morning, then chance of snow in the afternoon. Waves 2 to 4 ft
building to 4 to 7 ft occasionally to 9 ft.

$$

Carlaw