A modified flash flood severity assessment is presented, based on scoring a set of factors according to their potential for generating extreme catchment-scale flooding. Improvements are made to the index through incorporation of parameter uncertainties, managing data absence, and clearer graphical communication. The motive for proposing these changes is to better inform flood managers during th...

The feasibility of flash flood forecasting without making use of rainfall predictions is investigated. After a presentation of the “cevenol flash floods“, which caused 1.2 billion Euros of economical damages and 22 fatalities in 2002, the difficulties incurred in the forecasting of such events are analyzed, with emphasis on the nature of the database and the origins of measurement noise. The hi...

A conceptual flash flood early warning system for developing countries is described. The system uses rainfall intensity data from terrestrial microwave communication links and the geostationary Meteosat Second Generation satellite, i.e., two systems that are already in place and operational. Flash flood early warnings are based on a combination of the Flash Flood Guidance method and a hydrologi...

Floods are the most important risk in Mediterranean region, both due to their frequency and impact. Studies of historical floods show flood-rich periods that could be associated with climate causes, but there is also a certain growing trend as result changes land use increased vulnerability. If scenarios point an increase torrentiality precipitation, longer dry more intense rainfall, still high...

Climate change and global warming results in natural hazards, including flash floods. Flash floods can create blue spots; areas where transport networks (roads, tunnels, bridges, passageways) other engineering structures within them are at flood risk. The economic social impact of flooding revealed that the damage caused by leading to spots is very high terms dollar amount direct impacts on peo...

Abstract Flash floods commonly occur in urban areas due to a short period of heavy rainfall associated with the large impervious area and inadequate drainage system. An increase uncertainty predicting flash floods, especially climate change, reduces accuracy existing flood forecasting In such cases, affected zone’s actual level data is required for more effective management incident response. T...