How powerful are tornadoes?

A scientist, Theodore Fujita made a scale in 1971. The Fujita scale ranked tornadoes by the damage they do, it goes from F0 to F5. The weak tornadoes are ranked as F0 to F1, they usually just damage chimneys and break tree branches. The more powerful tornadoes are ranked F5. They can rip houses from the ground and strip bark off trees. Nowadays, there are many different scales that rank the damage of tornadoes. Some are the Enhanced Fujita Scale and the TORRO scale.