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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 .
At least 95 people have been killed in the worst flooding to hit Spain in decades. Flash floods are becoming more common and more intense due to climate change.
One is a flash flood watch, which means that conditions are favorable for flash flooding, and the other is a flash flood warning, meaning that a flash flood is occurring or one will occur imminently and is usually issued when there are strong weather radar echoes for an area that is prone to flash flooding. [2]
Malawi, flash flood and landslide Malawi: 1991 500 [14] 2018 East Africa floods: Kenya, Ethiopia, Uganda, Rwanda, and Somalia: 2018 483 2018 Kerala floods: India: 2018 464 Lisbon flash flood: Portugal: 1967 449+ 2016 China floods: China: 2016 445 Western Japan, massive rains and landslides Japan: 1972 437
A Level 3 out of 4 risk for flash flooding expands farther out into the Ohio and Tennessee Valleys as potential exists for numerous flash floods, some of which could be significant.
The region is particularly at risk of flash flooding – due to its hard ground and vulnerability to the “cold drop” – but its infrastructure has been unable to protect its residents.
a flash flood watch means that conditions may develop that lead to flash flooding. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.
"Dangerous conditions with a high risk of flash flooding, mudslides and other debris flows with washouts are likely." As of early Saturday local time, up to a foot of rain has fallen, with 6-10 ...