TOM A WARNER / WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY TOM A WARNER / WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY
Ultra-high-speed footage of lightning striking a TV tower. A nearby cloud-to-ground strike and its intracloud component (not seen) trigger the upward discharge from the tower, where the local electric field has become enhanced. Fast recoil leaders retrace the faint upward leader branches. Filmed at 7200 frames per second in Rapid City, South Dakota, USA, in summer.
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