Overview
- Service was suspended between Ermont‑Eaubonne and Pontoise and between Ermont‑Eaubonne and Valmondois in both directions, with no restart expected before 22:00.
- SNCF attributed the disruption to catenary damage caused by a fallen tree and reported a power‑supply failure and equipment dysfunction.
- RER C communications said the MONA, NORA, GOTA and ROMI trains were being held at platforms to enable interventions.
- A contingency “plan d’adaptation” was initiated to provide alternatives for affected travelers.
- Witnesses reported passengers walking on the tracks after trains came to a stop.