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

More than 3,700 Waymo robotaxis are being recalled after a software issue raised questions about how autonomous vehicles respond to severe weather conditions.

The Valley's gradual warming trend continues, with highs inching toward triple digits, and staying that way throughout the ...

Here is what to expect when traveling throughout Arizona on Memorial Day weekend, including traffic issues, event coverage and weather updates.

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 ...

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

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A massive dust storm forced the closure of a long stretch of U.S.

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