M4.0 Earthquake 8 km W of Villanueva de San Juan, Spain — October 19, 2021
2021-10-19 17:43:31 UTC (2021-10-19) · approx. 5:43 PM UTC+0 local
On October 19, 2021 at 17:43 UTC, a magnitude 4.0 shallow crustal earthquake struck 8 km W of Villanueva de San Juan, Spain, at a depth of 15.2 km and coordinates 37.0419°, -5.2649°.
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
-5.2649°E
Technical Information
Common Questions
How strong was the magnitude 4.0 earthquake near Villanueva de San Juan, Spain?
The magnitude 4.0 earthquake that struck 8 km W of Villanueva de San Juan, Spain on October 19, 2021 at 17:43 UTC had a depth of 15.2 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: us6000fvy1). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 19, 2021). M4.0 Earthquake 8 km W of Villanueva de San Juan, Spain — October 19, 2021. Retrieved December 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fvy1/