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A Study of Flash-flood Occurrences at a Site Versus Over a Forecast Zone

Gerald Williams

出版	Western Region, National Weather Service, 1975
URL	http://books.google.com.hk/books?id=MGapGv3vT7AC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN

註釋

"A flash flood is a flood in which the rapid rise in stream level and the resulting inundation follows the observable causative event by about four hours or less. For rain-caused flash floods meteorology is complex, and limited amounts of real-time data make timely forecasts of exact location very difficult. Lack of reports of flash-flood occurrences adds to the difficulty. Many occur that are never reported to the National Weather Service (NWS)"--Introduction.