Overview
- The victim was a 23-year-old construction worker struck by a falling crane, the Pontoise prosecutor said.
- Local authorities reported four people in critical condition and five with serious injuries after the short-lived but violent storm.
- At least three construction cranes toppled in Ermont, with roof damage, overturned vehicles and outages across neighbouring communes including Eaubonne, Franconville, Sannois, Andilly and Montmorency.
- Emergency services mobilized roughly 80 firefighters, 50 police officers and 20 SAMU staff; a gymnasium opened to shelter displaced residents after more than 700 assistance calls.
- Keraunos and the European Severe Weather Database confirmed a tornado and indicated an IF2/EF2-range event provisionally, with a full ground survey by meteorological teams still pending.