Earthquakes near Cusco through history

The deadliest was not the strongest: an estimated magnitude 5.8 on September 17, 1707 (Cuzco), for which NOAA records 160 deaths. NOAA’s list of significant earthquakes has 8 here, back to 1581. NOAA records deaths in 5 of the events here, 388 in all. The latest on NOAA’s list is a magnitude 4.3 on April 17, 2024 (Quispicanchi). NOAA’s record here begins in 1581 with an earthquake (Yanaoca). It grows thinner going back: 5 of the 8 significant earthquakes NOAA lists here are from 1927 on.

• April 17, 2024Earthquake · M 4.3QuispicanchiNOAA NCEI
• July 6, 1991Earthquake · M 7.015 km W of Lares, PeruUSGS
• September 17, 1707Earthquake · M 5.8 (est.)Cuzco · 160 deaths (NOAA)NOAA NCEI
• March 31, 1650Earthquake · M 8.1 (est.)Cuzco,Collao,Lima; Bolivia: SicasicaNOAA NCEI
• 1581Earthquake · M 6.4 (est.)YanaocaNOAA NCEI

• An event counts for Cusco 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