In brief
A thick wall of dark dust swept across parts of Arizona's Pinal County, creating a stunning and dangerous phenomenon known as a haboob. This event was documented as winds from thunderstorms lifted the dust, affecting visibility and air quality in the area. Haboobs are common in the southwestern United States.
Watch: Moment massive dust storm surges through Arizona
A massive dust storm has swept through parts of the US state of Arizona.
The thick wall of dark dust in Pinal County was carried by thunderstorm winds - a phenomenon known as a haboob, according to the National Weather Service.
The term haboob comes from Arabic and refers to a 'strong wind' or 'gale'.
In the United States, they are most common in the southwest.
