A magnitude 4.7 earthquake struck the Campi Flegrei volcanic area near Naples, Italy, on July 31, 2026, at approximately 7:46 p.
m. The quake knocked out power grids, stopped train lines, and caused structural damage.
Italy's National Institute of Geophysics and Volcanology placed the epicentral zone near Pozzuoli, west of Naples, with a shallow focal depth of roughly 3 kilometers.
The seismic shock is one of the most powerful recorded in the densely populated caldera in decades, driving frightened residents into the streets.
Cliff Collapse in Pozzuoli
In Pozzuoli, rockfalls crumbled sections of a steep tuff cliff behind multi-story residential buildings. Large clouds of dust covered parked cars and scooters below.
Local emergency services confirmed several minor injuries, mostly classified as code yellow. Temporary resident evacuations were carried out due to ongoing aftershocks.
Municipal transit authorities suspended regional rail and metro operations across the affected zone as a precautionary safety measure.
Power outages flared across multiple districts.
Italian fire service crews verified minor building damage throughout the metropolitan region. They noted that no immediate rescue operations were required.
The volcanic caldera of Campi Flegrei has seen increased bradysism-related earthquake frequency in recent years, prompting heightened government monitoring.
The recent tremors have renewed public anxiety over the sustained seismic crisis that destabilized the region in the early 1980s.
