My friend who lives in Perryton sent me the picture and link. I really think it might be further North, not just a little North of Amarillo. There is a new picture on their weather site now that shows a hole through the hail and only a small, tiny arroyo underneath after all the water ran off. If you haven't seen the video of the flash flood caused by the hail dam, you should google it too - it does look like a river but it really is just a small, normally dry arroyo.