Earthquakes near Naples, 2017–2026

The deadliest was not the strongest: a magnitude 4.2 on August 21, 2017 (Ischia Island), for which NOAA records 2 deaths. One earthquake here in these years is on NOAA’s list of significant earthquakes. NOAA records deaths in 2 of the events here, 5 in all. NOAA lists one significant eruption of one volcano within 100 km of Naples. The deadliest was Campi Flegrei on September 12, 2017, which killed 3 people by NOAA’s count.

• March 9, 2026Earthquake · M 6.016 km SSE of Sant'Angelo, ItalyUSGS
• September 21, 2019Earthquake · M 4.74 km WNW of Agropoli, ItalyUSGS
• September 12, 2017EruptionCampi Flegrei · 3 deaths (NOAA)NOAA NCEI · Wikipedia
• August 21, 2017Earthquake · M 4.2Ischia Island · 2 deaths (NOAA)NOAA NCEI · Wikipedia

• An event counts for Naples when it began within 100 km of its centre, or 200 km for an earthquake of magnitude 7 or more. Damage can reach further.
• USGS counts are its ComCat catalogue’s earthquakes of magnitude 4.5 or more, aftershocks included.
• NOAA lists significant events only: earthquakes that killed, did about $1 million of damage, reached magnitude 7.5 or intensity X, or raised a tsunami, and eruptions and tsunamis by like measures. Magnitudes before 1900 are its estimates from written accounts.
• Deaths are NOAA’s total for each event, wherever people died, its tsunami and fires included. A tsunami counts the dead its runup records give for this place: NOAA’s total for a tsunami includes its source quake’s.
• A tsunami from elsewhere counts where one of its runups killed or rose a metre or more.
• Counted to October 19, 2026, as is the map. The last 30 days ask USGS again.

How the layers work, where their data comes from and what they can’t tell you: Earthquakes, live, The world through history