flash flood


noun

  1. a sudden and destructive rush of water down a narrow gully or over a sloping surface, caused by heavy rainfall.

noun

  1. a sudden short-lived torrent, usually caused by a heavy storm, esp in desert regions

  1. A sudden, localized flood of great volume and short duration, typically caused by unusually heavy rain in a semiarid area. Flash floods can reach their peak volume in a matter of a few minutes and often carry large loads of mud and rock fragments.

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