Articles | Volume 19, issue 11
https://doi.org/10.5194/nhess-19-2597-2019
https://doi.org/10.5194/nhess-19-2597-2019
Research article
 | 
20 Nov 2019
Research article |  | 20 Nov 2019

Hydro-meteorological reconstruction and geomorphological impact assessment of the October 2018 catastrophic flash flood at Sant Llorenç, Mallorca (Spain)

Jorge Lorenzo-Lacruz, Arnau Amengual, Celso Garcia, Enrique Morán-Tejeda, Víctor Homar, Aina Maimó-Far, Alejandro Hermoso, Climent Ramis, and Romualdo Romero

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Short summary
On 9 October 2018, an extreme convective storm (> 300 mm accumulated in 6 h) generated a flash flood (305 m3 s−1) in the Ses Planes torrent that devastated the town of Sant Llorenç (Mallorca, Spain). Water reached a depth of 3 m in the most affected areas, and there was greatly increased flow velocity at bridges crossing the town. The floodwaters were very powerful and modified the channel morphology: more than 5000 t of sediment was deposited in the 2 km reach upstream of the town.
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