Cars crushed by falling boulders in Naples quake. Credit: @MFerraglioni X
A powerful 4.7 magnitude earthquake struck the Campi Flegrei volcanic area west of Naples late on Friday evening, sending people pouring into the streets and leaving some buildings crumbling beyond repair.
Recorded at 7.46pm local time, the tremor sat just three kilometres below the surface and ranks as the most intense recorded since the latest phase of ground movement started around Pozzuoli. Residents across Naples and nearby towns felt the shake clearly, with many describing a long, rolling motion that rattled windows and set alarms off and caused rolling boulders to crush cars in the streets.
What the quake did on the ground
Power cuts hit several neighbourhoods and the island of Procida. Local rail and metro lines, including the Cumana and Circumflegrea routes, stopped running so engineers could check the tracks. Fire crews received reports of falling plaster, cracked walls and one section of façade that dropped onto parked cars in Pozzuoli.
Four people suffered injuries, all treated and released without serious concern. Thankfully, no one was trapped and no severe building collapses have been confirmed, though checks continue through the night. Churches and older residential blocks took the worst of the visible damage.
Aftershocks and the bigger picture
WATCH: Massive rocks crush vehicles after the earthquake (terremoto) in Pozzuoli, Italy. pic.twitter.com/4mypVwpM4G
— Scope Report (@ScopeReport_) July 31, 2026
At least ten smaller aftershocks followed, the strongest around magnitude 2.6. Civil Protection Minister Nello Musumeci confirmed the injury count and said crews were already assessing homes and places of worship. Local mayors urged calm while inspections carried on.
Campi Flegrei is a large volcanic caldera rather than a single cone. For years the ground has been rising slowly because of pressure from fluids below, a process known as bradyseism. That steady uplift produces swarms of small earthquakes. Stronger ones have grown more common since 2023, raising worry among the hundreds of thousands who live inside the risk zone.
How authorities are responding
Italy’s National Institute of Geophysics and Volcanology logged the event within minutes and continues to monitor the area. The national Civil Protection unit opened a crisis desk and remains in contact with the Naples prefecture. Train services stay suspended until safety teams finish their work.
The official line from the Italian government stresses that today’s tremor, while the strongest for four decades of continuous monitoring, still fits the pattern of volcano-tectonic activity linked to the rising ground. No change in the current yellow alert level has been announced.
Significant damage following a M4.7 earthquake that struck the Campi Flegrei, west of Naples, Campania, southern Italy. pic.twitter.com/6yivOZbb3J
— Weather Monitor (@WeatherMonitors) July 31, 2026
People in Pozzuoli, Bagnoli and western Naples spent the evening outside comparing notes and checking on neighbours. Many said the shaking felt sharper than the 4.6 events recorded last year. Street lights flickered back on in stages, and emergency vehicles moved between the worst-hit streets.
Further updates are expected once daylight allows a full survey of buildings and infrastructure. For now the message from local leaders remains steady: stay alert, follow official advice, and wait for the latest checks to finish.
Scossa di terremoto campi flegrei
Pozzuoli #campiflegrei #terremoto pic.twitter.com/FH2i6piYoL
— El Frosho Lavezzi (@antoniodelpr) July 31, 2026