A TOWERING apocalyptic wall of dust has been captured barrelling though the Arizona desert after the US state was slammed by a monster monsoon.
They are common during Arizona’s monsoon season, which runs from mid-June to the end of September.
Ken Waters, National Weather Service meteorologist, said: “The dust gets lofted and basically just forms a big cloud that moves rapidly. As it moves, it tends to pick up more dust.”
Phoenix was slammed by a second monster monsoon storm on Monday, which grounded flights and damaged property across the state.
Chief meteorologist for 3TV, Royal Norman, said it was one of the biggest storms of the season.
He added: "I think this dust storm is going to push through the entire Valley.”