What is a downdraft in a thunderstorm?
Simply so, what causes a downdraft in a thunderstorm? Strong updrafts and downdrafts occur in thunderstorms as well. In a mature storm, updrafts are present alongside downdrafts caused by cooling and by falling precipitation. These downdrafts, originating at high levels, contain cold, dense air that spreads out at the ground as a cold air wedge.