A flood which follows within a few hours (usually less than 6 hours) of heavy or excessive rainfall, dam or levee failure, or the sudden release of water impounded by an ice jam. This is a dangerous s [..]

Short duration localised flooding caused by heavy rainfall with a relatively high peak discharge. Often caused by severe thunderstorms or intense rainfall events such as an East Coast Low. For severe thunderstorms, a flash flood event is considered to be a 1 in 10 year rainfall event.