What are the mythological explanations for thunderstorms?
At one time, it was believed that thunderstorms were battles waged by Zeus. Thunderstorms occurred when Jotnar fought with Thor. Later, thunderstorms were thought to have been caused by an angry god.
In most cases they don't. In the cases that they do there is usually severe flooding. There are two possible explanations for such a scenario. First, thunderstorms move by the wind. If there is little wind to move the storm, then it will move very little. Another scenario is called storm training, where thunderstorms line up and move over the same area one after another, sometimes merging to form a continuous line of heavy rain.