719
FZUS53 KLOT 160855
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
355 AM CDT Wed Jul 16 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>742-161600-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
355 AM CDT Wed Jul 16 2025

.TODAY...Southwest winds 5 to 10 kt becoming south 10 to 15 kt
late. Chance of showers and thunderstorms in the afternoon. Waves
around 1 ft.
.TONIGHT...Southwest winds 15 to 20 kt becoming west overnight.
Showers and thunderstorms likely, mainly in the evening. Waves 1
to 3 ft.
.THURSDAY...Northwest winds 15 to 20 kt becoming north 20 to
25 kt in the afternoon. Slight chance of showers in the morning.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. A
small craft advisory will likely be needed.
.THURSDAY NIGHT...North winds 15 to 20 kt becoming northeast.
Mostly cloudy in the evening, then becoming partly cloudy. Waves
4 to 6 ft occasionally to 8 ft. A small craft advisory will
likely be needed.

$$

LMZ743>745-161600-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
355 AM CDT Wed Jul 16 2025

.TODAY...South winds 10 to 15 kt. A chance of showers and
thunderstorms in the afternoon. Waves around 1 ft.
.TONIGHT...Southwest winds 15 to 20 kt becoming west overnight.
Showers and thunderstorms likely, mainly in the evening. Waves 1
to 2 ft building to 2 to 4 ft.
.THURSDAY...Northwest winds 15 to 20 kt becoming north 20 to
25 kt in the afternoon. Slight chance of showers. Waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft. A small craft
advisory will likely be needed.
.THURSDAY NIGHT...North winds 15 to 25 kt becoming northeast and
diminishing to 10 to 15 kt. Mostly cloudy in the evening, then
becoming partly cloudy. Waves 4 to 7 ft occasionally to 9 ft. A
small craft advisory will likely be needed.

$$

- Izzi