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.

Guinness World Records may be the go-to organization for measuring the extent of (sometimes dubious) human achievement, but for natural phenomena, the World Meteorological Organization’s (WMO’s) Committee on Weather and Climate Extremes sets the bar.

The World Meteorological Organization (WMO) has certified a jaw-dropping new world record for the longest single lightning flash ever recorded. The lightning coursed a staggering 515 miles across the southern United States—travelling all the way from eastern Texas to near Kansas City,