A surge of monsoonal storms brought instability across the American West this weekend, with severe winds, and lightning that ...

A monsoon storm fronted by a massive wall of dust bowled through the Phoenix area on Aug. 25, knocking out power to thousands ...

Powerful monsoon storms have popped up northeast of the Valley and could bring rain, thunder and lightning throughout the ...

A massive dust storm swept through parts of Arizona on August 25, sinking the area into darkness before bringing in heavy rain and lightning.

Dust devils on Earth are typically harmless, but on Mars, these swirling storms could carry a surprising and dangerous twist: they might generate electrical discharges.

Martian weather patterns have long fascinated sci-fi writers, perhaps most famously when a dangerous Martian dust storm stranded the protagonist of Andy Weir's novel "The Martian" (played by Matt ...

A monsoon storm hit Arizona on Wednesday night, causing power outages for thousands. The storm began in the Deer Valley area ...

The dust storms can travel for miles and span several miles wide and high. On July 5, 2011, a dust storm grew to 100 miles wide and more than 1 mile high, and dumped 40,000 tons of dust on Phoenix ...

A rare dust storm swept in from the southwest and enveloped the Chicago metropolitan area Friday evening, darkening the sky and creating eerie images. Visibility dropped to near zero and winds ...

A large dust storm swept through the Chicago area Friday, coming on the heels of a night of severe thunderstorms Thursday that left over 100,000 people without power.