Spectacular 'anvil crawler' lightning In Rapid City, South Dakota

A severe thunderstorm moved into western South Dakota on Tuesday, June 8 bringing stunning 'anvil crawler' lightning. Anvil crawlers, also known as Rocket Lightning, is one of the rarest of cloud discharges. It is generally horizontal and tree-like in appearance. This type of lightning often covers a very large distance and results in spectacular sky-filling discharges.