In terms of weather and other natural disasters, no place is immune since there are floods, droughts, snowstorms, earthquakes and other such mayhem. That said, one area that seems to have mostly tranquil, uneventful weather is the Tri-Cities area of Tennessee/Virginia. Spring and Fall are long with a mild Winter and Summer season.
Maybe so, but today they’re being slammed with flash floods and a lightning storm. http://www.wjhl.com/slideshow?widgetid=81180 .