it's not hail. it literally is the debris from homes and trees and shingles and cars. it's the debris that is now being picked up in the cell in the tornado itself because a metal plate or an aluminum siding is very easy to see on a radar picture and that radar bounces off that stuff and it is a completely deadly situation here with at least an f-3 on the ground possibly larger. we knew it was that large when it moved just to the south of the university of alabama about half hour ago and is now headed into another major populated area. >> let's hope and frpray for th best for the folks in birmingham. other news we're following including a major shake-up in president obama's national security team. sources telling cnn the president will nominate the cia director leon panetta to replace the outgoing defense secretary robert gates with afghan war