Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 040803
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
303 AM CDT Fri Apr 4 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>742-042145-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
303 AM CDT Fri Apr 4 2025

.TODAY...Northeast winds less than 10 kt in the early morning
becoming east 10 to 15 kt by late morning. Waves around 1 ft
building to 1 to 3 ft.
.TONIGHT...Northeast winds 15 to 20 kt becoming north late.
Showers with isolated thunderstorms. Waves 2 to 4 ft.
.SATURDAY...North winds 15 to 20 kt. Isolated showers in the
morning. Waves 2 to 4 ft.
.SATURDAY NIGHT...North winds 15 to 20 kt. Mostly cloudy. Waves
2 to 4 ft.

$$

LMZ743>745-042145-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
303 AM CDT Fri Apr 4 2025

.TODAY...Northeast winds less than 10 kt in the early morning
increasing to 10 to 15 kt by late morning. Waves 1 to 2 ft.
.TONIGHT...Northeast winds 15 to 20 kt becoming north late.
Showers with isolated thunderstorms. Waves 1 to 3 ft building to
2 to 4 ft.
.SATURDAY...North winds 10 to 15 kt. Isolated showers. Waves 2 to
4.
.SATURDAY NIGHT...North winds 15 to 25 kt. Slight chance of
showers in the evening. Waves 3 to 5 ft. A small craft advisory
may be needed.

$$

Borchardt