1209 M6 earthquake near Naples and Campi Flegrei Volcano creates strange Shaking

10 Mar 2026A magnitude 5.9 earthquake struck the Tyrrhenian Sea near Capri, Italy, at a depth of 414 km, creating a “shadow zone” where shaking was felt hundreds of miles away but barely in Naples. This deep focus earthquake, caused by the subduction of the ancient Eonian seafloor beneath the Eurasian plate, is not directly linked to the nearby Campi Flegrei supervolcano. However, scientists will continue to monitor the situation due to the potential for stress redistribution in the complex tectonic system.