The National Weather Service said the tornado that struck near Oklahoma City Friday night was an EF5, the most powerful there is. There hasn't been a storm system so intense since 1999. Anna Werner explains why the atmosphere over the Southern Plains was so volatile.
Not seeing our video? Some platforms accessing our content feeds do not include video as presented on our full site. Never fear. You can click here to view the video.
Digital Access for only $0.99
For the most comprehensive local coverage, subscribe today.