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File name:		 08-17
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Title: THUNDERSTORM CLOUD
Caption: Mature cumulonimbus thunderstorm clouds can often be recognized by a characteristic anvil top. This top is created by updrafts that are deflected by a stable layer in the atmosphere above the storm. The stable air stops further vertical growth of the cloud. (Arjen & Jerrine Verkaik/Skyart Productions)
Keywords: atmosphere, thunderstorms, cumulonimbus clouds, precipitation