There seams plenty of sandstorms in Arizona.
Here some links to the videos in Youtube.
A massive sandstorm hits the greater Phoenix Area July 3 2014
Sandstorm – Gilbert, Arizona – July 3 2014
A BLINDING dust storm has swept through central Arizona and briefly prompted the grounding of flights at Phoenix’s main airport.
Phoenix Dust Storm TIMELAPSE VIDEO – July 3, 2014
Towards the end of the video you can see a plane taking off, probably the last one allowed to leave.
Haboob Dust Storm Phoenix AZ 7/3/2014