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Heavy rains set off flash flooding in the mountains of southwestern Virginia and eastern Tennessee on July 12. Rivers quickly inundated homes and a campground, swept away cars and blocked access to damaged communities with mudslides and debris.
In June, flooding had hit mountains in the Western U.S., where rain combined with melting snow can be particularly destructive. Storms dumped up to 5 inches of rain over three days in and around Yellowstone National Park, rapidly melting snowpack. As the rain and meltwater poured into…
