M4.4 Earthquake 159 km N of Calama, Chile — February 21, 2022
2022-02-21 19:37:42 UTC (2022-02-21) · approx. 2:37 PM UTC-5 local
On February 21, 2022 at 19:37 UTC, a magnitude 4.4 intermediate depth earthquake struck 159 km N of Calama, Chile, at a depth of 140.3 km and coordinates -21.0170°, -68.7919°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — 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 2 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
-68.7919°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Calama, Chile?
The magnitude 4.4 earthquake that struck 159 km N of Calama, Chile on February 21, 2022 at 19:37 UTC had a depth of 140.3 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000gmqa). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, February 21, 2022). M4.4 Earthquake 159 km N of Calama, Chile — February 21, 2022. Retrieved May 4, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gmqa/