east. watching these individual cells now. which they re broken apart like that, they basically can start to form into the supercell structure that s more prevalent out there in tornado alley, like we saw with the storms yesterday. that s what we re worried about. this entire area under a tornado watch until 3:00 this afternoon. that may well be extended eastward going on the next couple of hours. we ll keep you posted. thanks, rob. and extraordinary things overcoming major obstacles. with the playoffs beginning, dr. sanjay gupta catches up with ron artest, perhaps best known for a brawl in 2004. today we visited a school in inglewood. yesterday we visited a clinic. a health clinic in south central, you know, and so i move around a lot, try and stay involved. reporter: after tracks, this is what l.a. lakers forward ron