M4.0 Earthquake 23 km ESE of Santa Gertrudis Miramar, Mexico — August 20, 2026
2026-08-20 20:38:37 UTC (2026-08-20) · approx. 2:38 PM UTC-6 local
On August 20, 2026 at 20:38 UTC, a magnitude 4.0 shallow crustal earthquake struck 23 km ESE of Santa Gertrudis Miramar, Mexico, at a depth of 42.6 km and coordinates 15.9565°, -95.2089°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-95.2089°E
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Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Santa Gertrudis Miramar, Mexico?
The magnitude 4.0 earthquake that struck 23 km ESE of Santa Gertrudis Miramar, Mexico on August 20, 2026 at 20:38 UTC had a depth of 42.6 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000tc75). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, August 20, 2026). M4.0 Earthquake 23 km ESE of Santa Gertrudis Miramar, Mexico — August 20, 2026. Retrieved September 8, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000tc75/