341
FZUS53 KLOT 011940
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
240 PM CDT Mon Sep 1 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>742-020315-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
240 PM CDT Mon Sep 1 2025

.TONIGHT...Northeast winds 10 to 15 kt diminishing to 5 to 10
kt. Mostly clear. Waves 1 to 2 ft.
.TUESDAY...North winds 5 to 10 kt becoming northeast in the
afternoon. Mostly sunny. Waves 1 to 2 ft.
.TUESDAY NIGHT...Southeast winds 5 to 10 kt becoming southwest
overnight. Mostly clear. Waves 1 to 2 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Showers likely with a
chance of thunderstorms in the afternoon. Waves 1 to 3 ft.

$$

LMZ743>745-020315-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
240 PM CDT Mon Sep 1 2025

.TONIGHT...North winds 10 to 15 kt becoming east 5 to 10 kt late.
Mostly clear. Waves 1 to 3 ft.
.TUESDAY...East winds 5 to 10 kt becoming north in the afternoon.
Sunny. Waves 1 to 2 ft.
.TUESDAY NIGHT...East winds 5 to 10 kt becoming south overnight.
Mostly clear. Waves 1 to 2 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 3 ft.

$$