The flash flood of the Bisagno Creek on 9th October 2014: An "unfortunate" combination of spatial and temporal scales

摘要: Summary On the 9th October, 2014 a strong event hit central part of Liguria Region producing disastrous consequences to city Genoa where Bisagno Creek flooded causing one death and lots damage. The precipitation pattern responsible for had peculiar spatial temporal characteristics that led an unexpected flash flood. sequence rainfall intensities particular severity showers at small scale, together with size sub-basin by most intense were unfortunate concurrent ingredients “almost perfect” peak flow was estimated be 100–200 years order return period. effects scales investigated coupling downscaling model hydrological setting up experiment follows probabilistic approach. Supposing correct volume different is known, provided probability generating events similar in terms streamflow. Furthermore, study gives indications regarding goodness reliability forecasted field needed, not only total volume, but even pattern, produce observed ground