Overview
- The unusually hot, dry conditions of summer 2026 produced repeated lightning-ignited fires across the Alps and wider Europe, stretching firefighting capacity.
- Official data show natural causes made up only a small share of fires in 2025, about three percent, with lightning the most common natural ignition.
- Researchers say lightning can heat and ignite deep organic alpine soils so fires smoulder inside the ground, can re‑emerge after rain, and are hard to fully extinguish.
- Local reporting notes sharp regional spikes this year, including 18 lightning fires in Piedmont compared with two in 2025 and a blaze above Lake Garda that has flared repeatedly.
- Experts urge stronger prevention, early warning systems, adapted forest management and public caution because most fires remain human-caused, forests are weakened, and the season is not over.