Pennsylvania State University meteorology

Amber Johnson (R) a fifth grade teacher at Briarwood Elementary School salvages items from her which was parked at the school when a powerful tornado ripped through the area on May 21, 2013 in Moore, Oklahoma. Johnson is being helped by her daughters Natalie (L) and Nicole. The town reported a tornado of at least EF4 strength and two miles wide that touched down yesterday killing at least 24 people and leveling everything in its path. (Photo by Scott Olson/Getty Images)

CSU Professor Launches Devices In Study Of Moore Tornado

Everything had to come together just perfectly to create the killer tornado in Moore, Okla.: wind speed, moisture in the air, temperature and timing. And when they did, the awesome energy released over that city dwarfed the power of the atomic bomb that leveled Hiroshima.

05/22/2013

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