372
FZUS53 KLOT 180915
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
415 AM CDT Sat Oct 18 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>743-181515-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-
415 AM CDT Sat Oct 18 2025

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 15 to 20 kt diminishing to 10 to 15 kt.
Showers and a chance of thunderstorms in the morning, then chance
of showers and thunderstorms in the afternoon. Waves 2 to 4 ft
subsiding to 1 to 2 ft.
.TONIGHT...South winds 10 to 15 kt becoming west and increasing
to 15 to 25 kt overnight. Showers and a chance of thunderstorms
in the evening, then rain and slight chance of thunderstorms
overnight. Waves around 1 ft building to 2 to 4 ft.
.SUNDAY...Northwest gales to 35 kt. Rain in the morning, then
chance of rain in the afternoon. Waves 5 to 8 ft occasionally to
10 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt becoming west and
diminishing to 10 to 20 kt. Clear. Waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft.

$$

LMZ744-745-181515-
Gary to Burns Harbor IN-Burns Harbor to Michigan City IN-
415 AM CDT Sat Oct 18 2025

...GALE WARNING IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY
EVENING...

.TODAY...South winds 15 to 20 kt becoming southwest. Chance of
showers and thunderstorms in the morning, then showers likely and
a chance of thunderstorms in the afternoon. Waves 1 to 3 ft.
.TONIGHT...South winds 10 to 15 kt becoming west and increasing
to 15 to 25 kt overnight. Showers and a chance of thunderstorms
in the evening, then rain and slight chance of thunderstorms
overnight. Waves 1 to 2 ft building to 2 to 4 ft.
.SUNDAY...Northwest gales to 40 kt. Rain in the morning, then
chance of rain in the afternoon. Waves 8 to 12 ft occasionally to
16 ft building to 10 to 14 ft occasionally to 18 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt becoming west and
diminishing to 10 to 20 kt. Mostly clear. Waves 8 to 12 ft
occasionally to 16 ft subsiding to 5 to 8 ft occasionally to
10 ft.

$$

Ogorek