I think they're so intense they generate weak gamma ray bursts: https://www.nasa.gov/vision/universe/solarsystem/rhessi_tgf.html https://www.nasa.gov/vision/un

I think they're so intense they generate weak gamma ray bursts: https://www.nasa.gov/vision/universe/solarsystem/rhessi_tgf.html https://www.nasa.gov/vision/universe/solarsystem/rhessi_tgf.... > "TGFs [terrestrial gamma-ray flashes] have been associated with lightning strikes and may be related to red sprites and blue jets, side effects of thunderstorms that occur in the upper atmosphere and are typically only visible with high-altitude aircraft and satellites. The exact relationship between all these events is still unclear, though."