M4.0 Earthquake 17 km WSW of Chontalpa, Mexico — September 20, 2022
2022-09-20 18:40:15 UTC (2022-09-20) · approx. 12:40 PM UTC-6 local
On September 20, 2022 at 18:40 UTC, a magnitude 4.0 shallow crustal earthquake struck 17 km WSW of Chontalpa, Mexico, at a depth of 3.3 km and coordinates 17.5969°, -93.6342°.
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
-93.6342°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake near Chontalpa, Mexico?
The magnitude 4.0 earthquake that struck 17 km WSW of Chontalpa, Mexico on September 20, 2022 at 18:40 UTC had a depth of 3.3 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000iqi0). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 20, 2022). M4.0 Earthquake 17 km WSW of Chontalpa, Mexico — September 20, 2022. Retrieved November 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000iqi0/