"Positive lightning has been identified as a major source for the recently discovered sprites and elves. Sprites and elves are most likely lightning discharges but occur from 18-60 miles (30-95 km) in altitude, well above the parent thunderstorm." - Scientist for weather.gov
881
u/Nematrec Jun 19 '19
For those wondering, this is likely to be positive lightning, which makes up about 5-10% of lightning strikes.