M4.2 Earthquake 40 km W of Las Grullas Margen Derecha, Mexico — August 29, 2026
2026-08-29 00:19:40 UTC (4 hours ago) · approx. 5:19 PM UTC-7 local
On August 29, 2026 at 00:19 UTC, a magnitude 4.2 shallow crustal earthquake struck 40 km W of Las Grullas Margen Derecha, Mexico, at a depth of 10.0 km and coordinates 25.8298°, -109.7340°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-109.7340°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Las Grullas Margen Derecha, Mexico?
The magnitude 4.2 earthquake that struck 40 km W of Las Grullas Margen Derecha, Mexico on August 29, 2026 at 00:19 UTC had a depth of 10.0 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000tcqv). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 29, 2026). M4.2 Earthquake 40 km W of Las Grullas Margen Derecha, Mexico — August 29, 2026. Retrieved August 29, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tcqv/