If it is...
It's the same lightning associated with any large, churning cloud of gas and debris, such as is sometimes seen in large volcanic ash clouds. The nuclear source of the cloud has little to do with it.
Space/Science » in reply to That is not lightning.
It's the same lightning associated with any large, churning cloud of gas and debris, such as is sometimes seen in large volcanic ash clouds. The nuclear source of the cloud has little to do with it.