Videos of Tornadoes in Oklahoma and Kansas
-Massive funnel cloud touches ground in Oklahoma
-Multiple twisters caught on tape in central Oklahoma
-Stormchasers catch twisters in Oklahoma
-Massive tornado hits earth in Etowah, Okla.
-Vortex forming over Oklahoma City
-Brief vortex caught on tape in Norman, Okla.
-Possible twister seen on tape in Yukon, Okla.