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The city of Genoa, Italy, nestled between the Tyrrhenian Sea and the Apennine Mountains, was rocked by severe flash foods on 4 November 2011. About 500 millimeters of rain—a third of the average annual rainfall—fell in 6 hours, killing six people and devastating the city center. A storm of this intensity is considered to be a multicentennial‐return‐period event. The torrential rainfall inflicted the worst disaster Genoa has experienced since October 1970, when a similar event killed 25 people. The peculiar fine‐scale properties of this event motivate a comprehensive research effort in the field of predictability of severe rainfall processes over areas of complex orography.
Parodi et al. (Mon,) studied this question.