In the past few years, demands on flash flood forecasting have grown. The Flash Flood Indicator (FFI) is a system used at Czech Hydrometeorological Institute for evaluation of risk possible occurrence floods over whole Republic. FFI calculation based current soil saturation, physical-geographical characteristics every considered area, and radar-based quantitative precipitation estimates (QPEs) ...

Flash floods are one type of natural disaster that frequently occurs in Malaysia, especially urban areas. This paper’s objective is to develop the flash flood susceptibility mapping (FFSM) using weight evidence (WOE) Sungai Pinang catchment. The catchment located highly urbanised areas Georgetown. FFSM was developed six conditioning factors: elevation, slope, rainfall, land cover, distance from...

Flash floods pose a significant threat to humans but the state of our knowledge on occurrence and related risk such phenomena is insufficient. At same time, many climate change models predict that extreme rainfall events will occur more frequently. Identifying areas susceptible flash complicated in case occurring valley bottoms large rivers. Flood maps Poland have not been developed for small c...

Flash floods can cause great geomorphological changes in ephemeral fluvial systems and result particularly severe damages for the unprepared population exposed to it. The flash flood Storelva river Utvik (western Norway) on 24 July 2017 was witnessed documented. This study assessed causes effects of provides valuable information calibration validation future modelling studies. flooded area at p...

Abstract In the context of climate change, impact extreme precipitation and its chain effects has intensified in southeastern coastal region China, posing a serious threat to socioeconomic development region. This study took tropical cyclones–extreme precipitation–flash floods as an example carry out risk assessment flash under change Yantanxi River Basin, China. To obtain flood inundation char...

Flash flood early warning is a very complex activity, involving a decision-making process based on meteorological and hydrological situation description and forecasts. Anyway, the reliability of information resources is not sufficient to make a good early warning system since communication language and semantics problems arise. Indeed, the decision-makers are often not technical persons, althou...

This paper describes the impacts of unplanned urban expansion and land surface change in the city of Bamenda in Cameroon, the underlying causes and the ecological and social implications. This expansion has placed great stress on forest, land and water ecosystems. Much of the city’s rapid growth in population has been accommodated in informal settlements on steep slopes and flood plains, with l...

Usually, various kinds of floods are distinguished based on the origin or on the main processes. Basically, the cause of the flood can be overflow over the banks of the main channel, direct runoff or failure of a levee or other structure. Flash floods are typical of steep beds and / or high intensity rainfalls. In mountain areas, they can be associated to debris flows or highly concentrated bed...

Rainfall events in the United Kingdom during the twentieth century have been surveyed and those identified as extreme by the Flood Studies Report (1975) standards have been examined for common features. Events of duration up to 60 hours were considered in order to investigate those that could cause flash floods. More than half of the 50 events identified were short-period convective storms. The...