M4.7 Earthquake 29 km SW of Villa Basilio Nievas, Argentina — January 31, 2021
2021-01-31 23:20:49 UTC (2021-01-31) · approx. 6:20 PM UTC-5 local
Felt by 12 people across nearby locations.
On January 31, 2021 at 23:20 UTC, a magnitude 4.7 shallow crustal earthquake struck 29 km SW of Villa Basilio Nievas, Argentina, at a depth of 17.3 km and coordinates -31.7493°, -68.9337°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 12 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-68.9337°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near Villa Basilio Nievas, Argentina?
The magnitude 4.7 earthquake that struck 29 km SW of Villa Basilio Nievas, Argentina on January 31, 2021 at 23:20 UTC had a depth of 17.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -31.7493°, -68.9337°, which is 29 km SW of Villa Basilio Nievas, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000ddi8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 31, 2021). M4.7 Earthquake 29 km SW of Villa Basilio Nievas, Argentina — January 31, 2021. Retrieved April 16, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000ddi8/