M4.9 Earthquake 67 km SW of Atocha, Bolivia — September 9, 2025
2025-09-09 13:03:28 UTC (2025-09-09) · approx. 9:03 AM UTC-4 local
On September 9, 2025 at 13:03 UTC, a magnitude 4.9 intermediate depth earthquake struck 67 km SW of Atocha, Bolivia, at a depth of 219.6 km and coordinates -21.4051°, -66.6325°. This earthquake was detected by 174 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.6325°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Atocha, Bolivia?
The magnitude 4.9 earthquake that struck 67 km SW of Atocha, Bolivia on September 9, 2025 at 13:03 UTC had a depth of 219.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -21.4051°, -66.6325°, which is 67 km SW of Atocha, Bolivia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000quzw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 9, 2025). M4.9 Earthquake 67 km SW of Atocha, Bolivia — September 9, 2025. Retrieved November 30, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000quzw/