M4.9 Earthquake 40 km SSW of Calingasta, Argentina — April 11, 2021
2021-04-11 14:42:04 UTC (2021-04-11) · approx. 9:42 AM UTC-5 local
Felt by 1 person across nearby locations.
On April 11, 2021 at 14:42 UTC, a magnitude 4.9 intermediate depth earthquake struck 40 km SSW of Calingasta, Argentina, at a depth of 111.8 km and coordinates -31.6582°, -69.6202°.
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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response 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
-69.6202°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Calingasta, Argentina?
The magnitude 4.9 earthquake that struck 40 km SSW of Calingasta, Argentina on April 11, 2021 at 14:42 UTC had a depth of 111.8 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -31.6582°, -69.6202°, which is 40 km SSW of Calingasta, 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: us6000e0u1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, April 11, 2021). M4.9 Earthquake 40 km SSW of Calingasta, Argentina — April 11, 2021. Retrieved June 19, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e0u1/