M4.3 Earthquake 49 km NW of Abra Pampa, Argentina — October 21, 2022
2022-10-21 21:26:22 UTC (2022-10-21) · approx. 5:26 PM UTC-4 local
On October 21, 2022 at 21:26 UTC, a magnitude 4.3 intermediate depth earthquake struck 49 km NW of Abra Pampa, Argentina, at a depth of 269.8 km and coordinates -22.3669°, -65.9915°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-65.9915°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Abra Pampa, Argentina?
The magnitude 4.3 earthquake that struck 49 km NW of Abra Pampa, Argentina on October 21, 2022 at 21:26 UTC had a depth of 269.8 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000ivmh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 21, 2022). M4.3 Earthquake 49 km NW of Abra Pampa, Argentina — October 21, 2022. Retrieved December 31, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000ivmh/