M4.4 Earthquake 69 km SSW of Acajutla, El Salvador — December 8, 2020
2020-12-08 22:39:04 UTC (2020-12-08) · approx. 4:39 PM UTC-6 local
On December 8, 2020 at 22:39 UTC, a magnitude 4.4 shallow crustal earthquake struck 69 km SSW of Acajutla, El Salvador, at a depth of 57.1 km and coordinates 13.0583°, -90.1633°.
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
-90.1633°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Acajutla, El Salvador?
The magnitude 4.4 earthquake that struck 69 km SSW of Acajutla, El Salvador on December 8, 2020 at 22:39 UTC had a depth of 57.1 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: us7000cpab). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 8, 2020). M4.4 Earthquake 69 km SSW of Acajutla, El Salvador — December 8, 2020. Retrieved February 12, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cpab/