Dust storms common in arid climate, desert terrain

PHOENIX (AP) -- Powerful dust storms that carry whirling dirt and debris are common occurrences across parts of Arizona and the arid Southwest during the spring and summer months. A day after a massive dust storm swept across an Arizona highway, killing three people in a 19-vehicle pileup, experts say the state isn't alone, across the country or the world, in its susceptibility to such a weather phenomenon....

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