What are hyster sprites?

Hyster sprites are a type of transient luminous event that occurs in the upper atmosphere, typically above thunderstorms. They are characterized by brief, bright flashes of light, often resembling jellyfish or other shapes, and are associated with the electrical activity of storms. These phenomena are similar to sprites, which are larger and more well-known, but hyster sprites are specifically linked to the rapid changes in electric fields during a storm's lifecycle. Their study helps researchers understand atmospheric electricity and its effects on the environment.