M4.2 Earthquake 81 km WNW of Abra Pampa, Argentina — June 21, 2021
2021-06-21 23:32:20 UTC (2021-06-21) · approx. 7:32 PM UTC-4 local
On June 21, 2021 at 23:32 UTC, a magnitude 4.2 intermediate depth earthquake struck 81 km WNW of Abra Pampa, Argentina, at a depth of 263.8 km and coordinates -22.5326°, -66.4588°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.4588°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Abra Pampa, Argentina?
The magnitude 4.2 earthquake that struck 81 km WNW of Abra Pampa, Argentina on June 21, 2021 at 23:32 UTC had a depth of 263.8 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000ef21). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, June 21, 2021). M4.2 Earthquake 81 km WNW of Abra Pampa, Argentina — June 21, 2021. Retrieved August 27, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000ef21/