Earthquakes near Mianzhu, Deyang, Sichuan, 1927–2026

It was also the deadliest: NOAA records 87,652 deaths for it. 5 earthquakes here in these years are on NOAA’s list of significant earthquakes. NOAA records deaths in 2 of the events here, 96,952 in all. The latest on NOAA’s list is a magnitude 5.7 on August 1, 2008 (Sichuan Province). NOAA lists one tsunami that began within 100 km of Mianzhu, Deyang, Sichuan.

• August 1, 2008Earthquake · M 5.7Sichuan ProvinceNOAA NCEI
• May 12, 2008Earthquake · M 7.958 km W of Tianpeng, China · 87,652 deaths (NOAA)USGS · NOAA NCEI · Wikipedia
• February 7, 1958TsunamiSichuan ProvinceNOAA NCEI
• August 25, 1933Earthquake · M 7.4101 km WNW of Jiangyou, China · 9,300 deaths (NOAA)USGS · NOAA NCEI · Wikipedia

• An event counts for Mianzhu, Deyang, Sichuan 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