3. Dirty Thunderstorms (1)
Dirty thunderstorms are a rare phenomenon, associated with large volcanic eruptions. But unusually and perhaps uniquely, they occur regularly at Sakurajima volcano in Japan, one of the most active volcanoes in the world.
4. Dirty Thunderstorms (2)
A study in the journal Science indicated that electrical charges are generated when rock fragments, ash, and ice particles in a volcanic plume collide and produce static charges, just as ice particles collide in regular thunderstorms.