M4.4 Earthquake 19 km SSW of La Esperanza (El Zapotal), Mexico — August 9, 2021
2021-08-09 19:35:07 UTC (2021-08-09) · approx. 1:35 PM UTC-6 local
On August 9, 2021 at 19:35 UTC, a magnitude 4.4 intermediate depth earthquake struck 19 km SSW of La Esperanza (El Zapotal), Mexico, at a depth of 72.6 km and coordinates 15.2831°, -93.2107°.
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
-93.2107°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near La Esperanza (El Zapotal), Mexico?
The magnitude 4.4 earthquake that struck 19 km SSW of La Esperanza (El Zapotal), Mexico on August 9, 2021 at 19:35 UTC had a depth of 72.6 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: us6000f7zh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 9, 2021). M4.4 Earthquake 19 km SSW of La Esperanza (El Zapotal), Mexico — August 9, 2021. Retrieved October 23, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000f7zh/