龙卷风

一股龙卷风是从 卷积云向地面延伸的极具强烈破坏性的漏斗状旋转风。龙卷风的快速旋转速度可高达每小时500 英里，并可在几秒钟内毁灭所有在它经过时遇到的东西。

Formation Details the development of tornadoes.	Damage Descriptions and pictures of damage caused by tornadoes.
Safety Examines necessary safety precautions for minimizing damage from tornadoes.