Nearshore Marine Forecast
Issued by NWS Chicago, IL

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
329
FZUS53 KLOT 301947
NSHLOT

Nearshore Marine Forecast
National Weather Service Chicago/Romeoville IL
247 PM CDT Tue Apr 30 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>742-010300-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
247 PM CDT Tue Apr 30 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING
THROUGH WEDNESDAY EVENING...

.TONIGHT...Southeast winds 10 to 15 kt becoming south 20 to 25
kt by midnight then southwest overnight. A few gale gusts to 35
kt possible after midnight. Chance of showers and slight chance
of thunderstorms after midnight. Waves 1 to 2 ft building to 2
to 4 ft.
.WEDNESDAY...Southwest winds 20 to 25 kt becoming west in the
morning. Mostly sunny. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY NIGHT...North winds 5 to 10 kt becoming northeast
overnight. Chance of showers and slight chance of thunderstorms
overnight. Waves 1 to 2 ft.
.THURSDAY...East winds 10 to 20 kt. Chance of showers. Chance
of thunderstorms in the afternoon. Waves building to 2 to 4 ft.

$$

LMZ743>745-010300-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
247 PM CDT Tue Apr 30 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM 11 PM CDT THIS EVENING
THROUGH WEDNESDAY AFTERNOON...

.TONIGHT...East winds around 10 kt becoming southeast 10 to 20
kt this evening then southwest 20 to 25 kt after midnight.
Slight chance of showers and thunderstorms after midnight.
Waves around 1 ft building to 1 to 3 ft.
.WEDNESDAY...Southwest winds 20 to 25 kt becoming west 10 to 20
kt by early afternoon then north 10 to 15 kt by late afternoon.
Partly cloudy in the morning then clearing. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...North winds 5 to 10 kt becoming northeast
overnight. Slight chance of showers and thunderstorms overnight.
Waves 1 to 2 ft.
.THURSDAY...East winds 10 to 15 kt becoming southeast 15 to 20
kt in the afternoon. Chance of showers. Chance of thunderstorms
in the afternoon. Waves 1 to 3 ft.

$$