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Bookmark or Share- Flood and flash flood definitions - National Weather ServiceFlash flood: A flood caused by heavy or excessive rainfall in a short period of time, generally less than 6 hours. Flash floods are usually characterized by raging torrents after heavy rains that rip through river beds, urban streets, or mountain canyons sweeping everything before them.
- Severe Weather 101: Flood Basics - NOAA National Severe ...Flash floods occur when heavy rainfall exceeds the ability of the ground to absorb it. They also occur when water fills normally dry creeks or streams or enough water accumulates for streams to overtop their banks, causing rapid rises of water in a short amount of time.
- Flash flood - WikipediaA 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 and snow.
- What Is a Flash Flood? - Scientific AmericanFlash flooding is a specific type of flooding that occurs in a short time frame after a precipitation event – generally less than six hours. It often is caused by heavy or excessive rainfall...
- What causes flash floods and why are they so dangerous?What causes flash floods? Flash floods develop when heavy rains hit in a short time. If there's more rain than the ground or sewage can absorb, that extra water flows downhill — a flash...
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