| English | Russian |
| flash flood | внезапное наводнение |
| flash flood | внезапное повышение уровня воды (в реке) |
| flash flood | флаш-флад (openmindead) |
| flash flood | внезапный паводок (A flash flood is a rapid flooding of low-lying areas: washes, rivers, dry lakes and depressions. It may be caused by heavy rain associated with a severe thunderstorm, hurricane, or tropical storm, or by meltwater from ice or snow flowing over ice sheets or snowfields. Flash floods may also occur after the collapse of a natural ice or debris dam, or a human structure such as a man-made dam) |
| flash flood | ливневый паводок |
| flash flood | внезапный быстроразвивающийся паводок (ННатальЯ) |
| flash flood | внезапный подъём воды (openmindead) |
| flash flood | внезапный бурный паводок (В.И.Макаров) |
| flash flood | кратковременный катастрофический паводок |
| flash flood | внезапное затопление (openmindead) |
| flash flood | местное небольшое и кратковременное наводнение |
| flash flood | ливневой паводок (This week the wildfires seem to have moved into a new phase, with cooler temperatures and rain helping firefighters, but also raising the risk of flash floods, which is highly elevated in recently burned areas.  cnet.com) |
| sweep up by a flash flood | смыть потоком (AFilinovTranslation) |