downburst
down burst |ˈdounˌbərst ˈdaʊnbərst | ▶noun a strong downward current of air from a cumulonimbus cloud, usually associated with intense rain or a thunderstorm.
downburst |ˈdaʊnbəːst | ▶noun a strong downward current of air from a cumulonimbus cloud, which is usually accompanied by intense rain or a thunderstorm.