Watching this incredible time-lapse, it's easy to imagine how nice it would be if storms only lasted 30 seconds. On the other hand, though, the speed makes the clouds even more ominous.
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This stunning video was put on YouTube by Tom Stolze, a storm-chaser in Missouri. He wrote, "A line of storms moved into the St. Louis region during the evening of 8/20/2014, presenting an impressive stacked shelf cloud."
When you speed it up like that, "impressive" is a bit of an understatement.