Overview
- The magnitude‑4.4 earthquake struck the Campi Flegrei offshore at about 05:50 on Thursday, May 21, at a shallow depth near 3 kilometres and was widely felt across Naples and surrounding towns.
- Several small aftershocks followed within minutes and initial checks found localized damage in Bacoli, including the partial collapse of an arch at the Maurizio Valenzi belvedere, while no widespread serious injuries have been confirmed.
- Mayors of Bacoli, Pozzuoli and Quarto activated municipal operations centres and ordered precautionary school closures and infrastructure checks, and some rail services were paused to allow structural inspections.
- Scientists say the quake is part of the long‑running bradisismic crisis that began in 2005 and intensified after 2023, with the Osservatorio Vesuviano recording 315 earthquakes in April and average ground uplift near 15 millimetres per month.
- The official alert level remains yellow and authorities warn that repeated shallow shocks can worsen damage to older buildings, so monitoring, building inspections and readiness for further service disruptions or local evacuations will continue.