Tornadoes strike Oklahoma and Arkansas

Tornadoes ripping across Oklahoma left at least 21 dead, and the death toll could rise yet again, weather forecasters say.

Chole Findley walks with her grandson Mark Williams as they leave the area where their home was destroyed after the tornado hit the area near 149th and Drexel on Monday, May 20, 2013 in Oklahoma City, Okla. (AP Photo/ The Oklahoman, Chris Landsberger)

Chole Findley walks with her grandson Mark Williams as they leave the area where their home was destroyed after the tornado hit the area near 149th and Drexel on Monday, May 20, 2013 in Oklahoma City, Okla. (AP Photo/ The Oklahoman, Chris Landsberger)

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