Dust cloud
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Giant dust storm blankets parts of Arizona

7 September 2012 Last updated at 18:24 BST

A giant dust storm, known as a haboob, has covered parts of the city of Phoenix in Arizona..

Drivers suffered poor visibility because of the storm and the Interstate 10 was among the highways affected.

The state of Arizona is regularly hit by haboobs during monsoon season.

Rebecca Donovan reports.