It was one for the record books, a lightning flash that reached from eastern Texas to Kansas City. It happened back on Oct. 22, 2017. The World Meteorological Organization has now confirmed the 515-mile-long "megaflash" is a new world record for the longest lightning discharge.

The 2017 'megaflash' stretched from eastern Texas to near Kansas City, crossing at least three states in seven seconds, breaking the old record.

A lightning flash tore across the sky above the Great Plains, stretching across a staggering 515 miles (829 kilometers) from eastern Texas to Kansas City. That “megaflash” shattered the previous record for longest lightning flash of 477 miles (768 kilometers), set in 2023.