Thunderstorms What is a thunderstorm? A thunderstorm is a storm where you hear thunder and see lightning. Usually there is heavy rain in a thunderstorm. Thunderstorms are electric storms. When there is about to be a thunderstorm, a cumulonimbus cloud forms, ofte
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A thunderstorm, also known as an electrical storm, lightning storm, or thundershower, is a storm characterized by the presence of lightning and its acoustic effect on the Earths atmosphere , known as thunder . Thunderstorms occur in association with a type of cloud known as a cumulonimbus . They are usually accompanied