Amazing this can occur and that it’s measurable as well.
World's longest lightning flash confirmed as new record
https://www.accuweather.com/en/seve...ghtning-flash-confirmed-as-new-record/1800615
A 515-mile-long lightning strike that traveled from Texas to Missouri has been confirmed as the new world record.
By Jesse Ferrell, AccuWeather meteorologist and senior weather editor
Published Jul 31, 2025 8:32 AM EDT | Updated Jul 31, 2025 8:32 AM EDT
The World Meteorological Organization (WMO)
has confirmed that a 515-mile-long "megaflash" of lightning in 2017 is a new world record.
The flash, a term for lightning inside a cloud that does not hit the ground, moved from northern Texas into Missouri and was part of a Mesoscale Convective System, a large complex of thunderstorms, on Oct. 22, 2017. This new lightning flash beats the
previous record of 477 miles set by a flash on April 29, 2020.
Although the new lightning flash is older than the previous record-holders, it was only recently discovered and is one of the first megaflashes observed by NOAA's GOES-16 satellite, which has made detailed information like this available to scientists for almost 10 years.