Catastrophic EventsHenry MillicanJosh Bryanthelp!

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Catastrophic EventsCatastrophic Events

Catastrophic Events

Tornado

Drought

Forestfire

Hurricane

Wind storm

Thunderstorm

Dust Devil

Volcano

Tsunami

Earthquake

Flooding

Tornado Formation

Tornadoes Tornadoes occur in the central and southern U.S.,

where warm, humid air from the Gulf of Mexico collides with cool, dry air from the Rockies and Canada.

Tornadoes are usually transparent until they pick up dust and dirt

Tornadoes can have a wind speed of 250 mph or more

Tornadoes can also travel at 30 mph -70 mph

Earthquake

Volcanoes Volcano

1. Magma chamber

2. Country rock

3. Conduit (pipe)

4. Base

5. Sill

6. Branch pipe

7. Layers of ash emitted by the volcano

8. Flank

9. Layers of lava emitted by the volcano

10. Throat

11. Parasitic cone

12. Lava flow

13. Vent

14. Crater

15. Ash cloud

Tsunamis

Tsunamis are usually made by earthquakes Tsunamis can become over 50 feet tall The Boxing Day Tsunami in 2004 caused

approx. 350,000 deaths and many more injuries.

Forest Fire

Surface fires typically burn rapidly at a low intensity and

consume light fuels while presenting little danger to mature trees and root systems. Crown fires generally result from ground fires and occur in the upper sections of trees, which can cause embers and branches to fall and spread the fire. Ground fires are the most infrequent type of fire and are very intense blazes that destroy all vegetation and organic manner, leaving only bare earth. These largest fires actually create their own winds and weather, increasing the flow of oxygen and "feeding" the fire.

There are three major kinds of forest fires.

Hurricane

Hurricanes most commonly appear on the East southern coast.

Cold unstable air above and warm tropical air leads to Hurricanes.

Hurricanes can last up to 3 weeks at a time.

Hurricane wind can range from a category one 74 mph to a category five 156+ mph