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 and snow.

2023年7月11日 · 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 flood. Flash...

A flash flood is a rapid rise of water along a stream or low-lying urban area. Flash flooding occurs within six hours of a significant rain event and is usually caused by intense storms that produce heavy rainfall in a short amount of time.

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.

what is flash flooding? Flooding that begins within 6 hours, and often within 3 hours, of the heavy rainfall (or other cause). Flash Floods can be caused by a number of things, but is most often due to extremely heavy rainfall from thunderstorms.

2022年8月2日 · Flash 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...

Flash 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.

2024年12月9日 · A flash flood is a flooding event that occurs within a short period, less than six hours, due to heavy rainfall or other sudden water releases. Flash floods are characterized by rapid water level rises, with little warning.

Approximately 33 million people globally were affected by flash floods in 2020. Sufficient moisture (> 70%) at the low and mid-levels is needed. Questions we ask: is there training potential? What forcing is there? Deep warm clouds old a lot more precipitation in the form of water. Is there enough energy to generate clouds, thus producing rain?

2022年8月3日 · Flash floods often manifest as walls of water that can wash away most things in its path and carry debris; they can reach heights of 30 feet or more and trigger...