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Cloud Streets West of King Sound, Australia – March 11th, 2010

16.8S 123.4E

March 11th, 2010 Category: Clouds, Image of the day, Rivers

Australia - March 5th, 2010

Australia - March 5th, 2010

The series of straight, parallel lines in the clouds off the northwest coast of Australia is an atmospheric phenomenon known as cloud streets. East of the clouds is King Sound in Western Australia, laden with sediments from the Fitzroy River.

Cloud streets generally occur when warm air near the surface of the water rises and is carried by the wind, causing the air to roll and spin. This then creates parallel rows of horizontal vortices in the direction of the wind; since adjacent vortices spin in opposite directions, alternating clouded and cloud-free bands are created.

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