M4.6 Earthquake 61 km W of San Agustín de Valle Fértil, Argentina — July 28, 2021
2021-07-28 18:39:49 UTC (2021-07-28) · approx. 1:39 PM UTC-5 local
On July 28, 2021 at 18:39 UTC, a magnitude 4.6 intermediate depth earthquake struck 61 km W of San Agustín de Valle Fértil, Argentina, at a depth of 80.0 km and coordinates -30.5749°, -68.1024°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-68.1024°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near San Agustín de Valle Fértil, Argentina?
The magnitude 4.6 earthquake that struck 61 km W of San Agustín de Valle Fértil, Argentina on July 28, 2021 at 18:39 UTC had a depth of 80.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -30.5749°, -68.1024°, which is 61 km W of San Agustín de Valle Fértil, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000ezxb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 28, 2021). M4.6 Earthquake 61 km W of San Agustín de Valle Fértil, Argentina — July 28, 2021. Retrieved October 3, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000ezxb/