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Thunderstorms

Thunderstorms. Cumulus Stage. Growth stage Warm, humid air rises then cools and condenses. Top of cloud evaporates and makes the air more humid. This allows the cloud to grow taller. No lightning, thunder or precipitation. Cumulus Stage. Mature Stage.

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Thunderstorms

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  1. Thunderstorms

  2. Cumulus Stage • Growth stage • Warm, humid air rises then cools and condenses. • Top of cloud evaporates and makes the air more humid. This allows the cloud to grow taller. • No lightning, thunder or precipitation

  3. Cumulus Stage

  4. Mature Stage • Downdraft – cooler air is heavier and begins to sink. • Downdraft and updraft of mature thunderstorm are called the “cell” • Most intense stage • Has lightning, thunder, heavy rain, hail

  5. Mature Stage

  6. Dissipating Stage • Downdraft overpowers the updraft. This cuts off the storms supply of warm, moist air. • Lower level cloud evaporates quickly. • All three stages can happen in less than an hour

  7. Dissipating Thunderstorm

  8. SupercellThunderstorm • Horizontal spin is tilted into updraft and causes the storm to rotate. • Often lasts longer, is larger and much more severe. • Good chance for a tornado

  9. Supercell Thunderstorm

  10. Vertical Cloud Growth • http://www.youtube.com/watch?v=_cl0aw87LqA&safety_mode=true&persist_safety_mode=1&safe=active

  11. Hail…wow! • http://www.youtube.com/watch?v=DuMX9AM9BrE&safety_mode=true&persist_safety_mode=1&safe=active

  12. Lightning • http://www.youtube.com/watch?v=Sn65RFvJKnk&safety_mode=true&persist_safety_mode=1&safe=active • Thunder without lightning???

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