562
FZUS53 KLOT 210813
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
313 AM CDT Tue May 21 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.

LMZ740-741-211530-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
313 AM CDT Tue May 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM CDT THIS AFTERNOON
THROUGH LATE TONIGHT...

.TODAY...Southeast winds 5 to 10 kt increasing to 10 to 15 kt this
morning, then becoming south 20 to 25 kt late this afternoon.
Mostly cloudy in the morning, then becoming partly cloudy. Waves
around 1 ft building to 1 to 3 ft.
.TONIGHT...South winds to 30 kt with occasional gale force gusts
to 35 kt becoming southwest after midnight, then diminishing to
15 to 25 kt toward sunrise. Showers and thunderstorms in the
evening. Some thunderstorms may be severe with wind gusts over 50
kt. Waves 3 to 5 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt becoming west. Partly
cloudy in the morning then clearing. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...West winds 10 to 15 kt. Mostly clear. Waves
around 1 ft.


$$

LMZ742>745-211530-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
313 AM CDT Tue May 21 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM NOON CDT TODAY THROUGH
LATE TONIGHT...

.TODAY...East winds 5 to 10 kt becoming south and increasing to
30 kt by early afternoon. Mostly cloudy in the morning, then
becoming partly cloudy. Waves around 1 ft building to 1 to 3 ft.
.TONIGHT...South winds to 30 kt with occasional gale force gusts
to 35 kt becoming southwest after midnight, then diminishing to 15
to 25 kt by sunrise. A period of showers and thunderstorms late in
the evening. Some thunderstorms may be severe with wind gusts over
50 kt. Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt becoming west. Partly
cloudy in the morning then clearing. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...West winds 10 to 15 kt diminishing to 5 to
10 kt. Mostly clear. Waves 1 to 2 ft.


$$

- Izzi