The biggest dust storm in living memory rolls into Phoenix on July 5, 2011

Rains that are almost biblical, heat waves that don’t end, tornadoes that strike in savage swarms—there’s been a change in the weather lately. What’s going on?

The biggest dust storm in living memory rolls into Phoenix on July 5, 2011, reducing visibility to zero. Desert thunderstorms kicked up the mile-high wall of dust and sand.  Image © Daniel Bryant/National Geographic



130-mile-an-hour twister outside Bradshaw

Image © Mike Hollingshead

“It was really cranking,” photographer Mike Hollingshead says of this 130-mile-an-hour twister. But to him, that was not a clue to run the other way. A dedicated storm chaser, he shot this funnel on June 20, 2011, outside Bradshaw, where it derailed freight-train cars.



Images are from the September edition of National Geographic magazine for iPad, available on the App Store.

Rising Rivers And Tributaries Continue To Flood Southern Communities And Farm Land

Image © Scott Olson/Getty Images

Fortified by a levee, a house near Vicksburg survives a Yazoo River flood in May 2011. Snowmelt and intense rains—eight times as much rainfall as usual in parts of the Mississippi River watershed—triggered floods that caused three to four billion dollars in damages.

source National Geographic