Earthquakes near Genoa through history

None reached magnitude 7: the strongest was an estimated magnitude 6.5 on February 23, 1887 (Ligurian Coast). It was also the deadliest: NOAA records 600 deaths for it. NOAA records deaths in 3 of the events here, 675 in all. The latest on NOAA’s list is a magnitude 5 on April 11, 2003 (Alessandria). NOAA’s record here begins in 218 BCE with an earthquake (Liguria (Ligurie), Gaule). It grows thinner going back: 10 of the 18 significant earthquakes NOAA lists here are from 1927 on. NOAA lists 6 tsunamis that began within 100 km of Genoa. The highest water NOAA records here was 3 m, on April 18, 1968.

• April 11, 2003Earthquake · M 5.0AlessandriaNOAA NCEI
• April 18, 1968Tsunami · 3 m hereLiguria-Cote D'azurNOAA NCEI
• February 23, 1887Earthquake · M 6.5 (est.)Ligurian Coast · 600 deaths (NOAA)NOAA NCEI · Wikipedia
• October 9, 1828Earthquake · M 5.7 (est.)Pavia · 15 deaths (NOAA)NOAA NCEI
• 218 BCEEarthquakeLiguria (Ligurie), GauleNOAA NCEI

• An event counts for Genoa 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 here start at magnitude 6: the catalogue’s smaller quakes thin out going back, where few instruments listened.
• 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