A single lightning bolt that leapt across three US states has been identified as the longest ever, the UN weather agency said on Tuesday.
Dubbed a megaflash, the rare low-rate horizontal discharge covered 768km between clouds in Texas to Mississippi in April 2020. It was detected by scientists using satellite technology and its distance – beating the previous record by 60km – has been confirmed by a committee of the UN's World Meteorological Organisation (WMO).
"That trip by air[plane] would take a couple of hours and in this case the distance was covered in a matter of seconds," WMO spokesperson Clare Nullis said.
Another megaflash that occurred above Uruguay and Argentina in June 2020 also set a new record, as the longest-lasting lightning flash, coming in at 17.1 seconds, the WMO said.
While these two newly catalogued megaflashes never touched the ground, they serve as a reminder of the dangers of a weather phenomenon that kills hundreds of people a year.
“We reiterate our message: when thunder roars, when you see lightning – go indoors. Don’t seek shelter in a beach hut, don’t stand under a tree,” Ms Nullis said. – Reuters