their loved ones and casey steegal is live in dallas with the latest. >> reporter: the reason we have this widespread flooding event across texas and oklahoma is because of the his to have toic rains -- the historic rains that have really pelted this region for the last two months or so. the hardest-hit area today, wimberley texas, that's between austin and san antonio. the blanco river crested above 40 feet over the weekend, more than triple its flood stage of 13 feet. raging waters washing away 400 homes there. residents describing how fast the water moved into their homes. >> i went to bed probably around 11:30, 12:00, and, i don't know probably -- heard the power go out. wasn't really worried about that but then strange noises from down tears. there was probably -- down downstairs, there was probably an inch of water on the ground.