Dozens Killed as Oklahoma Tornado Devastates Suburb

By Michael B. Marois, Mike Lee and Brian K. Sullivan - 2013-05-21T08:00:13Z

Photograph by Brett Deering/Getty Images

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'Wiped Clean'

“There are entire blocks that are wiped clean to the foundations,” Lojka said. “It went through residential areas, business areas. We know a hospital is heavily damaged, two elementary schools are heavily damaged.”

The damage may top $2 billion, Charles Watson, research and development director at Kinetic Analysis Corp., a hazard-research company in Silver SpringMaryland, told CNBC. The 1999 outbreak in the state caused an estimated $1.2 billion in damages, according to the National Weather Service.

Left, a vehicle lies upside down in the road after a powerful tornado ripped through the area on May 20.