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प्रश्न
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Flash floods
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उत्तर
- A flash flood is a term that describes floods, which is usually observed in low-lying areas.
- Floods are caused due to extremely heavy rainfall.
- Flash floods generally occur after the collapse of natural ice, debris dam or a man-made dam, etc.
- Flash floods also occur due to very high precipitation in one day (Mumbai in 2005, Kedarnath in 2013) or because of changed weather conditions like cyclones (Chennai, 2015).
- Flash floods are different from regular floods by having a time scale of fewer than six hours between rainfall and the onset of flooding.
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