Italy's landslide risk has increased by 15%, from 55,400 km² in 2021 to 69,500 km² in 2024, accounting for 23% of the country's total territory. The Autonomous Province of Bolzano (+61.2%), Tuscany (+52.8%), Sardinia (+29.4%), and Sicily (+20.2%) have witnessed the highest rises. The areas identified as most at risk (high P3 and very high P4) have risen from 8.7% to 9.5% of the country's territory. However, the situation on beaches has improved: there are more segments that are advancing (+30 km) than are eroding in terms of coastal erosion. The three-year period of 2022-2024 was characterized by hydro-meteorological events of unprecedented intensity. These events included widespread flooding along the main rivers and in the Marche region in September 2022, rapid mudslides and debris flows on the island of Ischia in November 2022, which resulted in 12 fatalities, floods in Emilia-Romagna in May 2023, with an estimated 8.6 billion euros in damage, and heavy rainfall in the Aosta Valley and northern Piedmont in June 2024. Climate change is causing an increase in the frequency of intense and concentrated rainfall across the nation, which has led to an increase in shallow landslides, rapid mudslides and debris flows, and floods, including flash floods.
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