JUST IN: New world records for extreme lightning 'megaflashes' confirmed.
* Most extensive strike: 440 miles long (equivalent distance from DC to Boston) in South America from 2018
* Longest flash: 16.73 seconds in Argentina in 2019https://t.co/IaRgmyNuwL— Capital Weather Gang (@capitalweather) June 25, 2020
from Twitter https://twitter.com/midatlanticwx