Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 060002 AAA
NSHLOT

Nearshore Marine Forecast...UPDATED
National Weather Service Chicago/Romeoville IL
702 PM CDT Sun Oct 5 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>742-060330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
702 PM CDT Sun Oct 5 2025

.TONIGHT...South winds 15 to 20 kt becoming southwest. Clear.
Waves 2 to 4 ft subsiding to 1 to 3 ft.
.MONDAY...Southwest winds 10 to 15 kt becoming east late. Chance
of showers and slight chance of thunderstorms in the afternoon.
Waves 1 to 3 ft.
.MONDAY NIGHT...North winds 10 to 15 kt. Showers and a chance of
thunderstorms in the evening, then showers and slight chance of
thunderstorms overnight. Waves 1 to 2 ft building to 2 to 4 ft.
.TUESDAY...North winds 15 to 25 kt. Chance of showers in the
morning. Waves 3 to 5 ft.

$$

LMZ743>745-060330-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
702 PM CDT Sun Oct 5 2025

.TONIGHT...South winds 15 to 20 kt. Clear. Waves 1 to 2 ft.
.MONDAY...South winds 10 to 15 kt. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 2 ft.
.MONDAY NIGHT...West winds 10 to 15 kt becoming northwest around
20 kt overnight. Showers and a chance of thunderstorms. Waves
1 to 2 ft building to 2 to 4 ft.
.TUESDAY...North winds 15 to 25 kt. Chance of showers in the
morning. Waves 3 to 6 ft. A small craft advisory will likely be
needed.

$$

Ratzer