A huge dust storm, with dust walls that reached eight thousand to ten thousand feet high and almost two feet wide, delayed flights and reduced visibility on Tuesday as it moved across Phoenix valley. This dust storm started around the Tucson area from an afternoon storm and was part of the Arizona monsoon season. The monsoon season begins the middle of June and goes through September.
The wind gusts with this dust storm were more than sixty miles per hour in some places in Arizona. It moved through Phoenix at a northwest direction and hit the cities of Tempe, Scottsdale, and Avondale. Many of the communities were also under a severe thunderstorm watch and at least eight thousand people were without power. The strong winds also downed trees.
No flights were allowed in or out of the Phoenix area until nine o’clock in the evening. The residents of Phoenix said that this dust storm was one of the worst that they had ever seen.