1. Tornadoes

2. Tornado Facts
A tornado is a rotating column of air attached to a thunderstorm that comes in contact with the ground.
Winds can reach 300 mph.
Can be more than a mile wide.
Tornadoes are most common in N. America.
Can travel at speeds from 5mph - 70mph.

3. Tornado Strength F-0: 40-72 mph – chimney damage, tree branches broken
– considerable damage, mobile homes demolished, trees uprooted
F-4: mph
– well-constructed walls leveled, cars thrown, buildings destroyed
F-5: mph
– homes lifted off foundation and carried considerable distances, autos thrown as far as 100 meters

4. States where most Tornadoes occur
1.Texas Iowa
2. Oklahoma 7. Missouri
3. Kansas 8. Illinois
4. Nebraska 9. Indiana
5. Colorado 10. South Dakota

5. F-5 Tornado Damage
Greensburg, KS May 4, 2007

8. F-0 Tornado Damage

9. 2009 Tornado in Wyoming

13. Tornado Alley