A lightning 'megaflash' over southern Brazil, stretching around 709-kilometres, has been handed the title of the world's longest. The World Meteorological Organization (WMO) noted the strike - which happened on October 31, 2018, broke the existing world record for a single flash over a horizontal distance. A strike recorded over France in 2012 previously held the record for the longest strike with 7.74 seconds. World Meteorological Organization A lightning strike over Argentina in 2019 has set a record for the longest single strike duration. “These are extraordinary records from single lightning flash events.

Source: Stuff July 01, 2020 02:37 UTC