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Tornado

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Tornado

  1. 1. Tornados<br />
  2. 2. Tornados<br /><ul><li>Outline:
  3. 3. What is Tornado.
  4. 4. Characteristics.
  5. 5. Tornado Formation.
  6. 6. Types of Tornados.
  7. 7. Tornado Forecasting.</li></ul>Weather Service Alerts<br /><ul><li>Effects of Tornados.</li></li></ul><li>What is a tornado?<br />A localized and violently destructive column of air occurring over land, characterized by a funnel-shaped cloud extending toward the ground.<br />
  8. 8. What is a tornado?<br />
  9. 9. Characteristics<br /><ul><li>Tornados come in many shapes and sizes.
  10. 10. Typically in the form of funnel shape.
  11. 11. Most Tornados have wind speeds between (64km/h and 177km/h), and stretch more than 75m across.
  12. 12. They could travel a few miles before dissipating.</li></li></ul><li>Characteristics<br /><ul><li>A typical tornado travels at around 10-20 miles per hour.
  13. 13. Most tornadoes occur during the months of May, June, July and August in the late afternoon and evenings.
  14. 14. Usually occurs in:
  15. 15. Tornado Alley Region in US.
  16. 16. North America.
  17. 17. South Africa.
  18. 18. South-Central and eastern Asia.
  19. 19. Australia.
  20. 20. New Zealand.
  21. 21. Philippines.</li></li></ul><li>Tornado Formation<br /><ul><li>Warm moist air collides with a cold dry one.
  22. 22. As warm air rises within the storm clouds, cooler air rushes in from the sides.
  23. 23. A whirling wind is created that draws surrounding air toward its center.
  24. 24. An area of strong rotation develops, 2 to 6 miles wide.
  25. 25. A dark, low cloud base or “cloud wall” appears.
  26. 26. As rotation becomes even stronger, a funnel develops.</li></li></ul><li>Tornado Formation<br />
  27. 27. Tornado Formation<br />
  28. 28. Types of Tornado<br /><ul><li>Supercell Tornadoes.</li></ul> The biggest and the strongest. They spin under a thunderstorm and their winds can get up to 300 mph. <br /><ul><li>Landspout.</li></ul> A narrow vortex that forms over land under several columns of cumulus clouds. Winds can reach up to 140 mph and only last for several minutes.<br />
  29. 29. Types of Tornado<br /><ul><li>Firewhirls.</li></ul> Can occur near any intense surface heat source, and near intense wildfires. <br /><ul><li>Gustnado.</li></ul> a small vertical swirl associated with a gust front or downburst. that are not connected with a cloud base.<br />
  30. 30. Types of Tornado<br /><ul><li>Waterspout.</li></ul> a column of spinning wind that forms downward from a cumulus cloud down to any body of water.<br /><ul><li>Dust Devils.</li></ul> They are swirls that go up and fizzle out in the clean air, and they are not connected to the clouds while spinning.<br />
  31. 31. Tornado Forecasting<br /><ul><li>A tornado’s size, strength, direction, and duration cannot be predicted.
  32. 32. Size and strength of a tornado is not determined until after damage has occurred.
  33. 33. Tornado direction cannot be predicted.
  34. 34. Impossible to predict exact location of a tornado (so far…)</li></li></ul><li>Tornado Forecasting<br /><ul><li>The Fujita-Pearson scale provides a means of categorizing tornadoes. (It is not necessarily an accurate indicator of damage.)</li></ul>Doppler Radar<br />
  35. 35. Fujita-Pearson scale<br />
  36. 36. Weather Service Alerts<br /><ul><li>Tornado Watch : means that weather conditions exist where tornadoes are possible.
  37. 37. Tornado Warning : means that a tornado has been spotted, or that Doppler radar indicates a thunderstorm rotation which can spawn a tornado.</li></li></ul><li>Effects of Tornado<br /><ul><li>Tornadoes can make People die.
  38. 38. At each year 5000 average number of people were died.
  39. 39. The deadliest tornado in world history was the Daultipur-Salturia Tornado in Bangladesh on April 26, 1989, which killed approximately 1300 people.</li></li></ul><li>Thanks For your Time!<br />

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