good evening and sadly, it s happening again in the american midwest tonight, and the prognosis for the next 24 hours is rough for millions of people across a wide area. already tonight, we ve had tornado warnings in at least four states and reports of tornadoes on the ground including in kansas adjacent to the state that s been the focus of so much of our attention after the massive twister that hit moore, oklahoma. it s the same storm system that just yesterday brought us these storm chaser pictures from inside one of the funnels, and the problem now tonight is the size of this system, the energy it s carrying and where it s headed. we want to start off tonight with meteorologist chris warren at weather channel head quarters. chris, good evening. good evening, brian. it s already shaping up to a dangerous night, in fact a dangerous few days on the way with a possible severe weather and tornado outbreak on our hands. let s take a look right now where the threat is tonight