The sheriff said first responders are continuing to look for survivors who may be trapped under debris.
“We've got debris everywhere,” Edwards said. “We're going to keep looking until we determine nobody else is missing.”
Residents caught up in the storm told stories of survival.
David Stottlemyre, 31, of Yukon said he and two co-workers at an oil field equipment repair shop were working in a metal shop close to the Canadian Valley Technology Center's El Reno campus when wind and tornado debris started whistling through their building.
He said they ran to a nearby steel building that was a little more substantial, where they huddled together as the tornado picked the building up and “moved it around a little bit” before setting it back down.
“Disneyland or one of those amusement parks needs to find a way to make that a ride,” he said.
Stottlemyre said the shop they had fled was reduced to rubble.
Some of the worst tornado damage Friday was at the nearby Canadian Valley Technology Center's El Reno campus. All four main buildings were heavily damaged and no longer usable. Cars, lights and trees in the parking lot in front of the school also were destroyed.
Fallin to visit
Gov. Mary Fallin announced she plans to visit the El Reno technology center at 9 a.m. Sunday to visit with first responders.
In Oklahoma City, flooding continued to be a problem Saturday afternoon. Numerous roads remained closed, and a road collapsed near SW 29 and Sara Road, a city spokeswoman said.
Will Rogers World Airport sustained some water damage to a corner of the roof in the ticket lobby area.
Hangar damage was reported.
Spokeswoman Karen Carney said a commercial aircraft got blown into a jet bridge. There were numerous flight cancellations as aircraft couldn't get in after the storm.
Oklahoma City University reported water damage on campus, but no structural damage to the university's buildings. An earlier report of a partial roof collapse was incorrect.
The Oklahoma City Zoo was late in opening Saturday after a red wolf was discovered missing from its containment area, which had a broken fence. It was found near the zoo's cafe.
The Oklahoma City area can expect a break from the rain for the next few days, the National Weather Service said, but more rain was a possibility by midweek.
Contributing: Staff Writers Andrew Knittle, Nolan Clay, Bryan Painter, Bryan Dean, Brianna Bailey, Juliana Keeping and Silas Allen