M4.8 Earthquake 66 km S of Puerto San José, Guatemala — January 1, 2021
2021-01-01 22:11:31 UTC (2021-01-01) · approx. 4:11 PM UTC-6 local
Felt by 2 people across nearby locations.
On January 1, 2021 at 22:11 UTC, a magnitude 4.8 shallow crustal earthquake struck 66 km S of Puerto San José, Guatemala, at a depth of 35.0 km and coordinates 13.3252°, -90.8461°.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
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
-90.8461°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Puerto San José, Guatemala?
The magnitude 4.8 earthquake that struck 66 km S of Puerto San José, Guatemala on January 1, 2021 at 22:11 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 13.3252°, -90.8461°, which is 66 km S of Puerto San José, Guatemala.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000d4vf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 1, 2021). M4.8 Earthquake 66 km S of Puerto San José, Guatemala — January 1, 2021. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000d4vf/