533
FZUS53 KLOT 270938
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
338 AM CST Thu Nov 27 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>742-272230-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
338 AM CST Thu Nov 27 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.TODAY...Northwest winds to 30 kt. A chance of flurries. Waves
4 to 6 ft occasionally to 8 ft.
.TONIGHT...Northwest winds to 30 kt easing to 15 to 20 kt late.
Mostly cloudy. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3
to 5 ft late.
.FRIDAY...Northwest winds 15 to 20 kt becoming west 10 to 15 kt.
Partly cloudy in the morning, then becoming mostly sunny. Waves
3 to 5 ft subsiding to 2 to 4 ft.
.FRIDAY NIGHT...West winds around 10 kt becoming southwest
overnight. Chance of snow overnight. Waves 1 to 2 ft.

$$

LMZ743>745-272230-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
338 AM CST Thu Nov 27 2025

...GALE WARNING IN EFFECT THROUGH THIS EVENING...

.TODAY...Northwest gales to 35 kt. Slight chance of snow showers
in the afternoon. Waves 8 to 12 ft occasionally to 16 ft.
.TONIGHT...Northwest winds to 30 kt with occasional gales to 35
kts in the evening. Chance of snow showers. Waves 8 to 11 ft
occasionally to 14 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming west and
diminishing to 10 to 20 kt. Slight chance of snow showers in the
morning. Waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.FRIDAY NIGHT...West winds around 10 kt becoming south overnight.
Chance of snow overnight. Waves 3 to 5 ft subsiding to 1 to 3 ft.

$$

KJB