Nearshore Marine Forecast
Issued by NWS Chicago, IL

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FZUS53 KLOT 072042
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
342 PM CDT Mon Apr 7 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>742-080330-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
342 PM CDT Mon Apr 7 2025

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING
THROUGH TUESDAY MORNING...

.LATE THIS AFTERNOON...Northeast gales to 35 kt. Scattered snow
showers. Waves 8 to 11 ft occasionally to 14 ft.
.TONIGHT...North winds to 30 kt diminishing to 10 to 20 kt.
Chance of snow showers in the evening. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.TUESDAY...Northwest winds 10 to 15 kt becoming east late. Mostly
sunny. Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to
3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt becoming south
overnight. Mostly clear in the evening, then becoming mostly
cloudy. Waves 1 to 3 ft.
.WEDNESDAY...South winds 15 to 20 kt becoming southeast. Rain and
snow likely in the morning, then rain in the afternoon. Waves
3 to 5 ft.

$$

LMZ743>745-080330-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
342 PM CDT Mon Apr 7 2025

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 7 PM CDT THIS EVENING
THROUGH TUESDAY AFTERNOON...

.LATE THIS AFTERNOON...North gales to 35 kt. Isolated snow showers.
Waves 10 to 14 ft occasionally to 18 ft.
.TONIGHT...North winds to 30 kt diminishing to 10 to 20 kt.
Mostly cloudy. Waves 10 to 14 ft occasionally to 18 ft subsiding
to 5 to 8 ft occasionally to 10 ft.
.TUESDAY...North winds 10 to 20 kt becoming northeast and
diminishing to around 10 kt late. Partly cloudy in the morning
then clearing. Waves 4 to 7 ft occasionally to 9 ft subsiding to
2 to 4 ft.
.TUESDAY NIGHT...East winds around 10 kt becoming south 10 to 20
kt overnight. Mostly clear in the evening, then becoming mostly
cloudy. Waves 1 to 3 ft.
.WEDNESDAY...South winds 15 to 20 kt becoming southeast. Rain and
snow likely in the morning, then rain in the afternoon. Waves
1 to 3 ft.

$$

Petr