Landslide Early Warning Algorithm

This is an algorithm that provides real-time hazard assessments of rainfall-induced landslides and debris flow, applying a fuzzy-logic approach to combine two key components.

• Susceptibility information (static component), obtained from the combination of different geo-morphological variables.
• High-resolution precipitation estimates (dynamic component), updated every time new observations are available.

Both elements are combined through a warning level matrix to obtain a qualitative warning level for each mapping unit. The warning levels are categorized as “Very Low,” “Low,” “Moderate,” and “High”, to assess the possibility of having a shallow slide or debris flow.