Twenty‐Three Years of Landslide Activity in the European Alps–Part 2: Investigating Triggers and the Impacts of Meteorological Change on Landslide Occurrences

Abstract Landslides represent one of the most devastating natural hazards in mountainous regions, posing significant threats to human safety, infrastructure and ecosystems. It is well established that there is a connection between meteorological factors and landslide occurrences but the mechanisms of these interactions and the impacts of climatic changes remain poorly understood, particularly at the regional scale. This study applied the automated seismic data exploration method proposed by Groult et al. (2026, https://doi.org/10.1029/2024JF008208 ) to analyze instrumental records from 849 seismic stations in the European Alps between 2000 and 2023, resulting in a catalog of 926 seismogenic landslides. The European Alps are divided into 142 massifs based on altitude and slope properties and we selected the massifs with the highest number of detected landslides for detailed analysis. We extracted data on air temperature, precipitation, snow cover and snow melt and compared their monthly variations to landslide occurrences. For six massifs, we recorded more than 30 landslides, which enabled us to cross‐correlate landslide activity and meteorological variations before and after 2010. The massifs with the highest landslide occurrences exhibit lower average air temperatures, higher annual precipitation, and larger channel steepness index. Our findings reveal four seasonal patterns of landslide occurrences and indicate a shift toward landslide activity occurring earlier in the year, linked to rising air temperatures (0.5°C–2°C) and changing precipitation patterns.