M4.7 Earthquake 28 km SW of Santiago Tepextla, Mexico — March 28, 2026
2026-03-28 12:29:15 UTC (2026-03-28) · approx. 5:29 AM UTC-7 local
On March 28, 2026 at 12:29 UTC, a magnitude 4.7 shallow crustal earthquake struck 28 km SW of Santiago Tepextla, Mexico, at a depth of 10.0 km and coordinates 16.1693°, -98.6436°. This earthquake was detected by 61 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Mexico, a region characterized by the Middle America Trench, where the Cocos Plate subducts beneath the North American Plate. The nearest mapped fault system is the Middle America Trench. View all earthquakes in Mexico.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
-98.6436°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Santiago Tepextla, Mexico?
The magnitude 4.7 earthquake that struck 28 km SW of Santiago Tepextla, Mexico on March 28, 2026 at 12:29 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 16.1693°, -98.6436°, which is 28 km SW of Santiago Tepextla, Mexico. View all earthquakes in Mexico.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Has Mexico had earthquakes this big before?
The largest recorded earthquake in Mexico was the M8.1 Chiapas earthquake of September 8, 2017. Today's magnitude 4.7 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us7000s8d2). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, March 28, 2026). M4.7 Earthquake 28 km SW of Santiago Tepextla, Mexico — March 28, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000s8d2/