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Which feature indicates a particularly vigorous updraught on satellite imagery?

  • A.A low cloud top
  • B.A gradual warming of the cloud top temperature over the hour following the initiation of the storm
  • C.An overshooting top penetrating the anvil
  • D.A smooth uniform anvil, which indicates that the outflow is spreading evenly in every direction at that level

Answer: C

An updraught vigorous enough to overshoot its equilibrium level appears as a bump above the otherwise flat anvil and indicates a storm capable of severe weather. Its temperature is often colder than the surrounding anvil. A warming cloud top indicates a weakening storm, and a smooth anvil is the mature or decaying state.

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