Recently, sandstorms swept across the southwestern United States. On the 25th local time, in Phoenix, the capital of Arizona, and nearby Gilbert and other places, strong winds swept up large tracts of sand and even formed a "sand wall" that shrouded the entire city.

Heitzman, an Arizona resident, was driving to pick up his children home from school when the dust storm hit.

Residents of Arizona Heatman:We're in the middle of a sandstorm right now, and we can't see anything, just sitting in the car.

Visibility is extremely poor, making it extremely difficult to drive. Heitzman tried to follow the familiar route home.

Residents of Arizona Heatman:I can see the house in the corner, you think we should be okay.

The daughter of Heathman:We can also see some clearly.

Residents of Arizona Heatman:We try to go home.

The car rattled in the wind for about 15 minutes before finally weakening, Ms. Heitzman recalled. From a distance, a towering wall of sand and dust, known as the Habu sandstorm, obscured the sky.

Sean Benedict, National Weather Service meteorologist:The Habu sandstorm is a type of sandstorm. Specifically, it is a huge "sand wall" formed by thunderstorms. Thunderstorms create so-called downbursts that scatter cold air after hitting the ground. Strong winds can reach 50 to 90 miles per hour (80 to 145 kilometers per hour). In this way, a large amount of dust will be lifted up and a continuously moving "sand wall" will be formed. We call it the Habu Sandstorm. We have a commonly used safety tip,"Pull over and keep you safe." If you're driving, make sure to do this because in these sandstorms, visibility drops to zero very quickly.

According to U.S. Cable TV News Network, on 27th, a dust storm hit Phoenix International Airport, causing a flight delay, the roof of the terminal was damaged, and the debris was blown down by the wind to the parking lot. Airport staff are assessing the specific losses. In addition, according to data from the U.S. Power Tracking website, after the 25th dust blow, more than 60,000 houses in Arizona have stopped electricity, after repairs, and electricity has been basically restored.