414
FZUS53 KLOT 161500
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
1000 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>742-162130-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
1000 AM CDT Wed Jul 16 2025

.REST OF TODAY...South winds 5 to 10 kt increasing to 10 to
20 kt. Scattered showers and thunderstorms in the afternoon.
Waves 1 to 2 ft.
.TONIGHT...Southwest winds 10 to 20 kt becoming northwest
overnight. Scattered showers and thunderstorms in the evening,
then slight chance of showers and thunderstorms overnight. Waves 1
to 2 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>745-162130-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
1000 AM CDT Wed Jul 16 2025

.REST OF TODAY...Southwest winds 5 to 10 kt increasing to 10 to
20 kt late. Isolated showers and thunderstorms in the afternoon.
Waves around 1 ft.
.TONIGHT...Southwest winds 10 to 20 kt becoming west overnight.
Scattered showers and thunderstorms in the evening, then chance
of showers and slight chance of thunderstorms overnight. 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.

$$

RC