President Obama To Visit Moore

President Barack Obama will visit Moore on Sunday. White House spokesman Jay Carney says the president will view the tornado damage first-hand.

Obama also plans to meet with victims and first responders.

In Oklahoma City, Mayor Mick Cornett says 12,000 to 13,000 homes were affected by the tornado that tore through Moore.

At least 24 people died when the tornado hit the Cleveland County community Monday afternoon.

Complete Coverage: May 2013 Tornado Outbreak

The Oklahoma Insurance Department says the financial cost of the tornado could exceed $2 billion, because of the size and duration of the storm.

The disaster zone stretches more than 17 miles and the tornado was on the ground for 40 minutes.

An aerial view of Moore shows whole neighborhoods obliterated, with gouged earth littered with splintered wood and pulverized cars.

The National Weather Service says the tornado was a top-of-the-scale EF5 twister with winds of at least 200 mph -- the first EF5 tornado of 2013.

The Associated Press contributed to this report.