M4.6 Earthquake 55 km SW of Champerico, Guatemala — August 12, 2026
2026-08-12 11:56:29 UTC (3 hours ago) · approx. 5:56 AM UTC-6 local
Aftershock of the M5.0 mainshock.
On August 12, 2026 at 11:56 UTC, a magnitude 4.6 shallow crustal earthquake struck 55 km SW of Champerico, Guatemala, at a depth of 35.0 km and coordinates 13.9641°, -92.3028°. This earthquake was detected by 68 seismic stations with moderate location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 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 20 days ago 60 km SW of Champerico, 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
-92.3028°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.6 earthquake near Champerico, Guatemala?
The magnitude 4.6 earthquake that struck 55 km SW of Champerico, Guatemala on August 12, 2026 at 11:56 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 13.9641°, -92.3028°, which is 55 km SW of Champerico, Guatemala.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 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 4.6 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 60 km SW of Champerico, Guatemala. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Authoritative source: USGS event page (event ID: us6000tk75). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 12, 2026). M4.6 Earthquake 55 km SW of Champerico, Guatemala — August 12, 2026. Retrieved August 12, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tk75/