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Though that might sound like something out of a sci-fi movie, it's actually a natural process giving scientists clues of impending flash droughts.
Flash droughts are just what they sound like; they happen quickly and without much warning. An example of this occurred during the summer of 2012 when a large section of the U.S. experienced the most substantial flash drought it had seen since the Dust Bowl of the 1930s, which lasted for years.
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