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Flash flood

Rapid flooding of geomorphic low-lying areas

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Flash flood: Rapid flooding of geomorphic low-lying areas
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. 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, as occurred before the Johnstown Flood of 1889. Flash floods are distinguished from regular floods by having a timescale of fewer than six hours between rainfall and the onset of flooding.

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At Least 175 Dead In Nigeria After Devastating Flash Floods Unleashed By Torrential Rains | Mokwa [Video]

At Least 175 Dead In Nigeria After Devastating Flash Floods Unleashed By Torrential Rains | Mokwa

At least 175 people have died and over 3,000 displaced after catastrophic floods submerged Mokwa, a major market town in Nigeria's Niger State. Triggered by predawn rains, the floods affected 500..

Credit: Oneindia     Duration: 03:35Published

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