M4.4 Earthquake 104 km NNE of San Pedro de Atacama, Chile — September 21, 2026
2026-09-21 17:38:43 UTC (1 hour ago) · approx. 12:38 PM UTC-5 local
On September 21, 2026 at 17:38 UTC, a magnitude 4.4 intermediate depth earthquake struck 104 km NNE of San Pedro de Atacama, Chile, at a depth of 198.7 km and coordinates -22.0932°, -67.6971°.
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.
Earthquake Details
-67.6971°E
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Common Questions
How strong was the magnitude 4.4 earthquake near San Pedro de Atacama, Chile?
The magnitude 4.4 earthquake that struck 104 km NNE of San Pedro de Atacama, Chile on September 21, 2026 at 17:38 UTC had a depth of 198.7 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: us7000tizh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, September 21, 2026). M4.4 Earthquake 104 km NNE of San Pedro de Atacama, Chile — September 21, 2026. Retrieved September 21, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tizh/