M4.0 Earthquake 82 km SSW of Calama, Chile — July 16, 2020
2020-07-16 19:21:23 UTC (2020-07-16) · approx. 2:21 PM UTC-5 local
On July 16, 2020 at 19:21 UTC, a magnitude 4.0 intermediate depth earthquake struck 82 km SSW of Calama, Chile, at a depth of 84.0 km and coordinates -23.0950°, -69.3358°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-69.3358°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Calama, Chile?
The magnitude 4.0 earthquake that struck 82 km SSW of Calama, Chile on July 16, 2020 at 19:21 UTC had a depth of 84.0 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 4.0 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000apv8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 16, 2020). M4.0 Earthquake 82 km SSW of Calama, Chile — July 16, 2020. Retrieved September 26, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000apv8/