MOORE, Okla. (WKOW) -- 12,000 to 13,000 homes were affected by the tornado in Moore, Oklahoma Monday.
At least 24 people died. 10 of them were children and two were infants. The other eight children range in age from four years old to nine years old.
President Barack Obama plans to visit the area on Sunday. The president will tour the damages and meet with victims and first responders.
Secretary of Homeland Security Janet Napolitano visited Wednesday and again pledged the federal government's ongoing support. She urged people to register with the Federal Emergency Management Agency to learn about aid for which they may qualify.
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 the site 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.