Articles | Volume 20, issue 6
https://doi.org/10.5194/hess-20-2317-2016
https://doi.org/10.5194/hess-20-2317-2016
Research article
 | 
15 Jun 2016
Research article |  | 15 Jun 2016

A radar-based regional extreme rainfall analysis to derive the thresholds for a novel automatic alert system in Switzerland

Luca Panziera, Marco Gabella, Stefano Zanini, Alessandro Hering, Urs Germann, and Alexis Berne

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Short summary
This paper presents a novel system to issue heavy rainfall alerts for predefined geographical regions by evaluating the sum of precipitation fallen in the immediate past and expected in the near future. In order to objectively define the thresholds for the alerts, an extreme rainfall analysis for the 159 regions used for official warnings in Switzerland was developed. It is shown that the system has additional lead time with respect to thunderstorm tracking tools targeted for convective storms.