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Thunderstorms & Tornadoes Chapter 10

Thunderstorms & Tornadoes Chapter 10. Meteorology 1010 Professor Bunds Utah Valley University. Thunderstorm Types. Air Mass Occur within mT air Uneven heating of the ground creates unstable air (therefore common in afternoon)

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Thunderstorms & Tornadoes Chapter 10

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  1. Thunderstorms & Tornadoes Chapter 10 Meteorology 1010 Professor Bunds Utah Valley University

  2. Thunderstorm Types • Air Mass • Occur within mT air • Uneven heating of the ground creates unstable air (therefore common in afternoon) • Usually isolated storms & usually do not produce strong winds, hail • Severe • Involve uneven heating and lifting of warm air by front or mountains • Usually occur in bands or groups • Can produce strong winds, hail, tornadoes

  3. Average Number of Days per Year with Thunderstorms Lots of air mass T-storms

  4. Stages of Air Mass Thunderstorm Development

  5. Cumulus Clouds – potential initiation of air mass T-storms

  6. Developing Cumulonimbus

  7. Gust Front in Severe Thunderstorm

  8. Roll Cloud in Severe Thunderstorm

  9. Roll Cloud in Severe Thunderstorm

  10. Conditions for a Thunderstorm

  11. Dryline

  12. Squall Line line of thunderstorms ahead of a cold front

  13. Lightning!

  14. Stages of a Lightning Strike

  15. Tornadoes! Damage Path from a Tornado

  16. Supercell

  17. Supercell

  18. Development of a Tornado from a Mesocyclone

  19. Multi-Vortex

  20. Average Tornadoes per Year per 10,000 mi2 area

  21. Fujita Intensity Scale

  22. Fujita Intensity Scale Number of Tornadoes-blue Amount of Damage-red

  23. Paths of Tornadoes

  24. Tornado Forecasting Watch-Conditions are Right Warning-Tornado has been Spotted!

  25. Doppler Radar

  26. Doppler Effect

  27. Tornado OutbreakApril 14 – 16, 2011 • 62 Tornados Saturday Night Alone • 200 in 3 Days • Multiple vortex systems • www.Tornadovideos.net

  28. Greensboro, N.C. Morehead, N.C. Charleston S.C. Locations of Soundings in Following Slides

  29. Morehead North Carolina 04/17/2011 00 UTC

  30. Charleston South Carolina 04/17/2011 00 UTC

  31. Greensboro Carolina 04/17/2011 00 UTC

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