M4.3 Earthquake 54 km SW of Brisas Barra de Suchiate, Mexico — November 29, 2021
2021-11-29 22:50:15 UTC (2021-11-29) · approx. 4:50 PM UTC-6 local
On November 29, 2021 at 22:50 UTC, a magnitude 4.3 shallow crustal earthquake struck 54 km SW of Brisas Barra de Suchiate, Mexico, at a depth of 20.5 km and coordinates 14.1933°, -92.5883°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 2 days ago 60 km SSW of Ocós, Guatemala. Since the mainshock, the USGS has recorded 1 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
-92.5883°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Brisas Barra de Suchiate, Mexico?
The magnitude 4.3 earthquake that struck 54 km SW of Brisas Barra de Suchiate, Mexico on November 29, 2021 at 22:50 UTC had a depth of 20.5 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 4.3 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 4.3 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 60 km SSW of Ocós, Guatemala. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000g8rg). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 29, 2021). M4.3 Earthquake 54 km SW of Brisas Barra de Suchiate, Mexico — November 29, 2021. Retrieved February 5, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000g8rg/