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Discussion papers
https://doi.org/10.5194/nhess-2019-62
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-2019-62
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Brief communication 21 Mar 2019

Brief communication | 21 Mar 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Natural Hazards and Earth System Sciences (NHESS).

Brief communication: Preliminary hydro-meteorological analysis of the flash flood of 20 August 2018 on Raganello Gorge, Southern Italy

Elenio Avolio1, Ottavio Cavalcanti2, Luca Furnari2, Alfonso Senatore2, and Giuseppe Mendicino2 Elenio Avolio et al.
  • 1Institute of Atmospheric Sciences and Climate - National Research Council (ISAC-CNR), Lamezia Terme, 88046, Italy
  • 2Department of Environmental and Chemical Engineering, University of Calabria, Rende, 87036, Italy

Abstract. On 20 August 2018 a flash flood affected the Raganello Creek (Southern Italy) causing 10 casualties. The rainfall event was so highly localized that the spatial coverage of rain gauges resulted inadequate to measure it, while radar products showed a storm cell with rain peaks of about 70–100 mm/h. This scientific report provides a preliminary hydro-meteorological analysis of the event and evaluates the forecasting skills of a system based on the WRF/WRF-Hydro models, using both one-way and fully-coupled approaches. First results show a satisfactory simulation of the event in terms of both rainfall and hydrological impact.

Elenio Avolio et al.
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Status: open (until 16 May 2019)
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Elenio Avolio et al.
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Short summary
This is the first scientific report of the flash flood of 20 August 2018 on Raganello Gorge (Southern Italy), an extreme event with rather specific features (very localized in space and time), which unfortunately caused 10 victims. The meteo-hydrological dynamics were well reconstructed and the forecasting skills were evaluated using an innovative modelling approach, including fully coupled atmospheric-hydrological modelling and improved representation of Sea Surface Temperature.
This is the first scientific report of the flash flood of 20 August 2018 on Raganello Gorge...
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