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.

Jul 11, 2023 · 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 flooding can...

Mar 24, 2023 · Flash flooding is weather’s No. 2 killer, claiming more lives than anything but heat, so it’s important to understand what causes it and how to stay safe.

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.

Sep 7, 2022 · Several factors contribute to flash flooding. Two key elements are how hard the rain falls (rainfall intensity) and how long the rain lasts (duration). Louisiana's land is mostly flat lowlands. This causes drainage problems during heavy summer rainfall, tropical storms, and …

3 days ago · Heavy rains are pummeling parts of Virginia, with flash floods reported in the southwest region, Gov. Glenn Youngkin said in a post on X Saturday afternoon. In some areas, 1.5 to 3 inches of rain ...

Aug 2, 2022 · 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 caused by...

3 days ago · The National Weather Service office in Blacksburg, Virginia, issued a flash flood warning until 10:45 p.m. Saturday after 1 to 3 inches had already fallen in the area, triggering flash floods in ...

Jun 2, 2023 · Flash floods can roll boulders, tear out trees, destroy buildings and bridges, and scour out new channels. Rapidly rising water can reach heights of 30 feet or more. Furthermore, flash flood-producing rains can also trigger catastrophic debris flows and mudslides.

A flash flood is a flood that begins within 6 hours, and often within 3 hours, of a heavy rainfall (NOAA, no date b). Flash floods are highly localised in space: they are restricted to basins of a few hundred square kilometres or less.