Application of a Hydrological MIKE HYDRO River – UHM Model for Valea Rea River (Romania). Case Study, Flash Flood Event Occurred on August 1st, 2019.

Convective rainfall can cause dangerous flash floods within less than six hours. Thus, simple approaches are required for issuing quick warnings. The flash flood guidance (FFG) approach pre-calculates rainfall levels (thresholds) potentially causing critical water levels for a specific catchment. Afterwards, only rainfall and soil moisture information are required to issue warnings. This study applied the principle of FFG to the Wernersbach Catchment (Germany) with excellent data coverage using the BROOK90 water budget model. The rainfall thresholds were determined for durations of 1 to 24 h, by running BROOK90 in “inverse” mode, identifying rainfall values for each duration that led to exceedance of critical discharge (fixed value). After calibrating the model based on its runoff, we ran it in hourly mode with four precipitation types and various levels of initial soil moisture for the period 1996–2010. The rainfall threshold curves showed a very high probability of detection (POD) of 91% for the 40 extracted flash flood events in the study period, however, the false alarm rate (FAR) of 56% and the critical success index (CSI) of 42% should be improved in further studies. The proposed adjusted FFG approach has the potential to provide reliable support in flash flood forecasting.

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Emergency Action Plan for Flash Flood Due to Dambreak - Case study: Shahrchai Dam, Urmia (Iran)

10.1002/essoar.10505432.1 ◽

2020 ◽

Author(s):

Seyed Mohammadreza Heidari ◽

Seyed Jalal Heidari

Keyword(s):

Flash Flood ◽

Action Plan

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Monitoring flash flood hazard using modeling-based techniques and multi-source remotely sensed data: the case study of Ras Ghareb City, Egypt

Arabian Journal of Geosciences ◽

10.1007/s12517-021-08341-3 ◽

2021 ◽

Vol 14 (19) ◽

Author(s):

Mohammed Sadek ◽

Xuxiang Li ◽

Eman Mostafa ◽

Jacqueline Fifame Dossou

Keyword(s):

Flash Flood ◽

Flood Hazard ◽

Remotely Sensed ◽

Remotely Sensed Data

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Analysis of Catania Flash Flood Case Study by Using Combined Microwave and Infrared Technique

Journal of Hydrometeorology ◽

10.1175/jhm-d-13-092.1 ◽

2014 ◽

Vol 15 (5) ◽

pp. 1989-1998 ◽

Cited By ~ 26

Author(s):

Francesco Di Paola ◽

Elisabetta Ricciardelli ◽

Domenico Cimini ◽

Filomena Romano ◽

Mariassunta Viggiano ◽

...

Keyword(s):

Real Time ◽

Flash Flood ◽

Weather Prediction ◽

Rapid Evolution ◽

Cell Formation ◽

Winter Season ◽

National Research Council ◽

Severe Weather ◽

Synoptic Situation

Abstract In this paper, the analysis of an extreme convective event atypical for the winter season, which occurred on 21 February 2013 on the east coast of Sicily and caused a flash flood over Catania, is presented. In just 1 h, more than 50 mm of precipitation was recorded, but it was not forecast by numerical weather prediction (NWP) models and, consequently, no severe weather warnings were sent to the population. The case study proposed is first examined with respect to the synoptic situation and then analyzed by means of two algorithms based on satellite observations: the Cloud Mask Coupling of Statistical and Physical Methods (MACSP) and the Precipitation Evolving Technique (PET), developed at the National Research Council of Italy. Both of the algorithms show their ability in the near-real-time monitoring of convective cell formation and their rapid evolution. As quantitative precipitation forecasts by NWP could fail, especially for atypical convective events like in Catania, tools like MACSP and PET shall be adopted by civil protection centers to monitor the real-time evolution of deep convection events in aid to the severe weather warning service.

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Geomatic-Based Flood Loss Assessment and Its Application in an Eastern City of China

Water ◽

10.3390/w14010126 ◽

2022 ◽

Vol 14 (1) ◽

pp. 126

Author(s):

Youjie Jin ◽

Jianyun Zhang ◽

Na Liu ◽

Chenxi Li ◽

Guoqing Wang

Keyword(s):

Spatial Resolution ◽

Loss Rate ◽

Flash Flood ◽

Economic Loss ◽

Economic Losses ◽

Risk Level ◽

Loss Assessment ◽

Flood Loss ◽

Flood Disasters

Flash-flood disasters pose a serious threat to lives and property. To meet the increasing demand for refined and rapid assessment on flood loss, this study exploits geomatic technology to integrate multi-source heterogeneous data and put forward the comprehensive risk index (CRI) calculation with the fuzzy comprehensive evaluation (FCE). Based on mathematical correlations between CRIs and actual losses of flood disasters in Weifang City, the direct economic loss rate (DELR) model and the agricultural economic loss rate (AELR) model were developed. The case study shows that the CRI system can accurately reflect the risk level of a flash-flood disaster. Both models are capable of simulating disaster impacts. The results are generally consistent with actual impacts. The quantified economic losses generated from simulation are close to actual losses. The spatial resolution is up to 100 × 100 m. This study provides a loss assessment method with high temporal and spatial resolution, which can quickly assess the loss of rainstorm and flood disasters. The method proposed in this paper, coupled with a case study, provides a reliable reference to loss assessment on flash floods caused disasters and will be helpful to the existing literature.

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