Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 25, issue 3
Articles | Volume 25, issue 3
https://doi.org/10.5194/nhess-25-1037-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-1037-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 3
Research article
 | Highlight paper
 | 
10 Mar 2025
Research article | Highlight paper |  | 10 Mar 2025

Characterizing the scale of regional landslide triggering from storm hydrometeorology

Jonathan Perkins, Nina S. Oakley, Brian D. Collins, Skye C. Corbett, and W. Paul Burgess

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This paper presents a method for characterizing regional landslide potential, which the authors suggest as an improved basis for landslide hazard forecasting during storms. It discusses the advantage of using considering the relative soil-saturation rather than a rainfall recurrence interval to understand landsliding triggered by rainfall, focusing on data from California.
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Rainfall-induced landslides result in deaths and economic losses annually across the globe. However, it is unclear how storm severity relates to landslide severity across large regions. Here we develop a method to dynamically map landslide-affected areas, and we compare this to meteorological estimates of storm severity. We find that preconditioning by earlier storms and the location of rainfall bursts, rather than atmospheric storm strength, dictate landslide magnitude and pattern. 
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