317
FZUS53 KLOT 190228
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
928 PM CDT Wed Jun 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>742-190915-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
928 PM CDT Wed Jun 18 2025

.REST OF TONIGHT...Northwest winds 10 to 20 kt. Showers late in
the evening, then a chance of showers after midnight. Waves 1 to
3 ft.
.THURSDAY...Northwest winds 10 to 15 kt becoming southwest in
the afternoon. Chance of showers in the morning. Waves 1 to 2 ft.
.THURSDAY NIGHT...South winds 5 to 10 kt becoming southwest.
Mostly clear. Waves around 1 ft.
.FRIDAY...Southwest winds 10 to 15 kt becoming south 15 to 20 kt.
Slight chance of showers and thunderstorms in the afternoon.
Waves 1 to 2 ft.

$$

LMZ743>745-190915-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
928 PM CDT Wed Jun 18 2025

.REST OF TONIGHT...Northwest winds 15 to 25 kt becoming west 10
to 15 kt overnight. Showers late in the evening, then a chance of
showers after midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.THURSDAY...Northwest winds 10 to 15 kt becoming west 5 to 10 kt.
Chance of showers in the morning. Waves 1 to 2 ft.
.THURSDAY NIGHT...Southwest winds 5 to 10 kt. Mostly clear. Waves
1 ft or less.
.FRIDAY...Southwest winds 10 to 15 kt increasing to 15 to 20 kt.
Partly cloudy. Waves around 1 ft.

$$