World’s longest lightning flash: This ‘megaflash’ spanned 829 kilometers; here’s what you need to know

A colossal ‘megaflash’ stretching 829 kilometers across the sky above the United States on October 22, 2017, has been confirmed as the longest lightning flash ever recorded, surpassing the previous record. The World Meteorological Organisation highlights the potential dangers of such extreme lightning events, especially in remote areas.