M4.6 Earthquake 34 km SE of Londres, Argentina — January 17, 2021
2021-01-17 08:05:24 UTC (2021-01-17) · approx. 4:05 AM UTC-4 local
On January 17, 2021 at 08:05 UTC, a magnitude 4.6 intermediate depth earthquake struck 34 km SE of Londres, Argentina, at a depth of 158.6 km and coordinates -27.9736°, -66.9362°.
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
-66.9362°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Londres, Argentina?
The magnitude 4.6 earthquake that struck 34 km SE of Londres, Argentina on January 17, 2021 at 08:05 UTC had a depth of 158.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -27.9736°, -66.9362°, which is 34 km SE of Londres, 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: us7000d0tk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 17, 2021). M4.6 Earthquake 34 km SE of Londres, Argentina — January 17, 2021. Retrieved March 27, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000d0tk/