Tornado is a destructive rotating column of air that has very high wind speeds and that maybe visible as a funnel-shaped cloud.
How do tornados form
If this column gets caught in a supercell updraft, the updraft tightens the spin and it speeds up (much like a skater's spins faster when arms are pulled close to the body).
The rain and hail in the thunderstorm cause the funnel to touch down creating a tornado.
Speed of the Two Tornadoes
Moore- 300 mph, the highest wind speed ever recorded near the earth's surface.