M4.3 Earthquake 57 km SSW of Champerico, Guatemala — January 22, 2021
2021-01-22 22:52:14 UTC (2021-01-22) · approx. 4:52 PM UTC-6 local
On January 22, 2021 at 22:52 UTC, a magnitude 4.3 shallow crustal earthquake struck 57 km SSW of Champerico, Guatemala, at a depth of 39.3 km and coordinates 13.7912°, -92.0580°.
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 16 days ago 71 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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 2 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-92.0580°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Champerico, Guatemala?
The magnitude 4.3 earthquake that struck 57 km SSW of Champerico, Guatemala on January 22, 2021 at 22:52 UTC had a depth of 39.3 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 4.3 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 71 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: us7000d2kf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 22, 2021). M4.3 Earthquake 57 km SSW of Champerico, Guatemala — January 22, 2021. Retrieved April 13, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000d2kf/