4.7-Magnitude Quake Hits Campi Flegrei Near Naples

Overview

• A magnitude 4.7 earthquake struck the Campi Flegrei volcanic zone west of Naples on Friday, July 31, at about 3 km depth and was followed by dozens of aftershocks, the largest measuring magnitude 3.1 early the next morning.
• Officials report between 21 and 26 people injured, including two in serious condition, and roughly 300 residents temporarily displaced as emergency teams carry out building checks.
• Several buildings and shops have been declared uninhabitable and Pozzuoli suffered the heaviest damage with collapsed walls, rock falls onto vehicles and a closed quay that interrupted local maritime traffic.
• Civil protection and local authorities activated crisis units, opened reception centers, conducted technical verifications of structures and restored partial utility service while some rail and metro links were halted for inspections.
• Scientists point to sustained ground uplift recorded since early 2025 and say the quake is part of ongoing unrest at Europe’s largest caldera, keeping monitoring at heightened levels because further shocks remain possible.