AVL · Machine learning
Avalanche
XGBoost · spatially blocked CV · hold-out AUC 0.99 · v1.1 · 2026-04
French & Italian Alps — Chamonix corridor at peak
Highest hold-out AUC in the catalog. Trained on community-contributed events; performance reflects strong terrain/snow signal.
What ships
Surfaces — calibrated 0–1 probability per pixel.
Every release: 0–1 score · 5-class band · per-pixel uncertainty · input-coverage mask · STAC item · methodology doc.
Inputs
DEM slope/aspect, mean snowfall, winter temperature, terrain ruggedness
Validation
Spatially blocked hold-out AUC 0.99 — cross-validation blocks prevent leakage across nearby pixels.