Wow. 709km long lightning strike. Check out the global weather discussion group on Weather.net.nz.
safe_image.php?d=AQDU5YGwW6dkV0a8&w=720&
weather.net.nz

https://www.stuff.co.nz/national/weather-news/122002433/recordbreaking-709kmlong-lightning-megaflash-over-brazil