We just learned that the F3 Tornado on the Fujita Scale is roofs and walls torn off, trains overturned, forests uprooted and cars thrown.
The next level of damage is the F4 tornado - Devastating damage.
This is when houses are totally blown down. Small buildings like garages are blown away. Cars are thrown through the air.
(from: wikipedia - fujita scale)
Kid Facts - Blast from the past: Altocumulus Cloud
