FLASH FLOOD

sudden flood, instantaneous flow of water that fills an area

A flash flood is a rapid flooding of geomorphic low-lying areas (washes), rivers and streams, caused by the intense rainfall associated with a thunderstorm, or multiple training thunderstorms. Flash floods can also occur after the collapse of an ice dam, or a man-made structure, such as a dam, for example, the Johnstown Flood of 1889. Flash floods are distinguished from a regular flood by a timescale less than six hours.
See more at Wikipedia.org...

Noun
1. a sudden local flood of great volume and short duration
(synonym) flashflood
(hypernym) flood, inundation, deluge, alluvion
(hyponym) floodhead

flash-flood /'flæʃflʌd/
danh từ cơn lũ đột ngột (sau một trận mưa to)
(C) 2007 www.TừĐiểnTiếngViệt.net

danh từ
cơn lũ đột ngột (sau một trận mưa to)