More monsoon storms could mean delays and diversions this summer. How Phoenix Sky Harbor and other Arizona airports plan to ...

The tool will categorize dust storms based on dust concentration, but will also measure wind speed and area covered.

The scale would rate a storm based on the amount of dust in the air, as well as other components, researchers say.

Arizona is no stranger to dust storms. Known as haboobs, they can be miles long and reach thousands of feet in height.

The most catastrophic dust storm in US history brought mayhem to six states, from Nebraska in the north to Texas in the south. Ferocious winds picked up an estimated third of a million tonnes of dusty ...

Witness powerful monsoon weather as a dust storm (haboob) moves across Southeastern Arizona, dramatically reducing visibility ...