National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS53 KLOT 180205
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
905 PM CDT Wed Apr 17 2024

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>742-180930-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
905 PM CDT Wed Apr 17 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT THURSDAY...

.REST OF TONIGHT...West winds 20 to 25 kt diminishing to 10 to 15
kt afer midnight. Mostly cloudy then becoming partly cloudy.
Waves 1 to 3 ft subsiding to around 1 ft.
.THURSDAY...Northwest winds 5 to 10 kt becoming northeast 10 to
15 kt mid morning. Chance of showers late in the morning, then
showers likely in the afternoon. Waves 1 ft or less building to 1
to 2 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northwest
overnight. Showers in the evening. Waves 1 to 2 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming west 15 to 25 kt.
Sunny in the morning, then becoming partly cloudy. Waves 1 to
3 ft.

$$

LMZ743>745-180930-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
905 PM CDT Wed Apr 17 2024

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM CDT THURSDAY...

.REST OF TONIGHT...West winds 20 to 25 kt diminishing to 10 to 15
kt afer midnight. Mostly cloudy then becoming partly cloudy.
Waves 2 to 4 ft subsiding to 1 to 2 ft.
.THURSDAY...North winds around 5 kt becoming northeast 10 to 15
kt in the afternoon. Chance of showers in the afternoon. Waves 1
to 2 ft.
.THURSDAY NIGHT...North winds 10 to 15 kt becoming northwest
overnight. Showers in the evening, then slight chance of showers
overnight. Waves 1 to 3 ft.
.FRIDAY...Northwest winds 15 to 20 kt becoming west. Mostly sunny
in the morning, then becoming partly cloudy. Waves 1 to 3 ft.

$$

Petr