M4.9 Earthquake 43 km SW of Andalgalá, Argentina — November 20, 2022
2022-11-20 22:17:38 UTC (2022-11-20) · approx. 6:17 PM UTC-4 local
On November 20, 2022 at 22:17 UTC, a magnitude 4.9 intermediate depth earthquake struck 43 km SW of Andalgalá, Argentina, at a depth of 152.2 km and coordinates -27.8935°, -66.5878°. This earthquake was detected by 106 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
-66.5878°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Andalgalá, Argentina?
The magnitude 4.9 earthquake that struck 43 km SW of Andalgalá, Argentina on November 20, 2022 at 22:17 UTC had a depth of 152.2 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -27.8935°, -66.5878°, which is 43 km SW of Andalgalá, Argentina.
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: us7000ir7p). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, November 20, 2022). M4.9 Earthquake 43 km SW of Andalgalá, Argentina — November 20, 2022. Retrieved January 30, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ir7p/