Earthquakes near Pasto, 1927–2026

The deadliest was not the strongest: a magnitude 7.2 on March 6, 1987 (29 km SSE of Pimampiro, Ecuador), for which NOAA records 5,000 deaths. 7 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records deaths in 7 of the events here, 5,289 in all. The latest on NOAA’s list is a magnitude 5.7 on July 25, 2022 (9 km N of San Gabriel, Ecuador). NOAA lists 2 significant eruptions of 2 volcanoes within 100 km of Pasto. The largest was Galeras on January 14, 1993, at 2 on the volcanic explosivity index. It killed 9 people by NOAA’s count.

• July 25, 2022Earthquake · M 5.79 km N of San Gabriel, EcuadorUSGS · NOAA NCEI
• September 30, 2012Earthquake · M 7.311 km WNW of San Agustín, ColombiaUSGS
• January 14, 1993Eruption · VEI 2Galeras · 9 deaths (NOAA)NOAA NCEI · Wikipedia
• March 6, 1987Earthquake · M 7.229 km SSE of Pimampiro, Ecuador · 5,000 deaths (NOAA)USGS · NOAA NCEI · Wikipedia

• An event counts for Pasto 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