Natural Disaster
Published on Nov 18, 2015
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PRESENTATION OUTLINE
All About Tornadoes
By Anna Caroline Carter
A tornado is a violently rotating column of air that extends from the base of a thunderstorm to the ground.
Scientists aren't completely sure on how or why tornadoes occur, but they have strong theories.
Their theory
- Wind at different altitudes blow at different speeds
- Faster spinning creates a funnel cloud
- Funnel cloud rotates
- It touches down on the ground
What's it made of?
- Wind
- Water
- Droplets
- Dust
- Debris
What can come with a tornado?
- These are not guaranteed to occur
- Hail
- Rain
- Lightning
- Winds between 65 and 300mph
Worst since I was born
- Joplin, Missouri
- May 22, 2011
- 158 deaths
- Over 1,000 injuries
- 200 mph
In-state since I was born
- Myrtle Beach Tornadoes
- July 6, 2001
- 39 injuries
Other terrible tornadoes
The Tri-State Tornado
- March 18, 1925
- Hit Missouri, Illinois, and Indiana
- 695 deaths and 13,000 injuries
- $17 million property damage
- 220 mph
Natchez, MS
- May 6, 1840
- 317 deaths
Forecasters look for...
- Moisture
- Wind shear
- Temperature patterns
- Wind flow patterns
Photo by NASA's Marshall Space Flight Center
Animals sensing tornadoes
- Frogs croak louder than usual
- Birds tend to fly low
- Sheep crowd together
Photo by c@rljones
Tornado sirens are used to warn people. A steady 3-5 minute siren means to take shelter immediately.
Photo by Nick Jones Everybody
Environmental Effects
- Kills animals (affects food chain)
- Destroys buildings
- Destroys farms (food shortages)
- Destroys trees
- Water contamination
