Violent and damaging downdraught striking the surface of the Earth violently. Associated with a severe thunderstorm.
A strong downdraft current of air from a cumulonimbus cloud, often associated with intense thunderstorms. Downdrafts may produce damaging winds at the surface.
A severe localized downdraft that can be experienced beneath a severe thunderstorm. (Compare Microburst and Macroburst.)
A sudden rush of cool air toward ground that can impact with speeds greater than 70 mph and produce damage similar to that of a tornado. It usually occurs near the leading edge of the storm or may occur in heavy rain. Viewing the damage from the air does not reveal evidence of a twisting motion or convergence toward a central track, like it would for a tornado.