Today not to dismiss the case. Nightly news begins right now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. In a moment, coverage of the financial shock waves rocking the world from the historic vote in britain. But there is breaking news in an unfolding tragedy here at home we need to tell you about. In west virginia, at least 20 people are now confirmed dead in a catastrophic flood disaster, the worst in a hundred years. 500 people remain trapped by those floodwaters in a shopping mall. Waters so powerful, ripping homes from foundations and sweeping away cars. Nbcs ron motte starts us off from the flood zone. Reporter it was sudden, it was violent, raging floodwaters ripping through whatever stood in its way, houses, cars, just about everything. I watched my car kind of flip io reporter ten inches of rain, onequarter of the average annual rainfall around here fell in just 24 hours, swallowing whole neighborhoods, leav