Tornadoes.

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Tornados vs. Hurricanes

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Presentation transcript:

Tornadoes

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.

Tornado Strength F-0: 40-72 mph – chimney damage, tree branches broken – considerable damage, mobile homes demolished, trees uprooted F-4: 207-260 mph – well-constructed walls leveled, cars thrown, buildings destroyed F-5: 261-318 mph – homes lifted off foundation and carried considerable distances, autos thrown as far as 100 meters

States where most Tornadoes occur 1.Texas 6. Iowa 2. Oklahoma 7. Missouri 3. Kansas 8. Illinois 4. Nebraska 9. Indiana 5. Colorado 10. South Dakota

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

F-0 Tornado Damage

2009 Tornado in Wyoming

Tornado Alley