M4.2 Earthquake 216 km SE of Sarangani, Philippines — August 13, 2021
2021-08-13 21:20:09 UTC (2021-08-13) · approx. 5:20 AM UTC+8 local
On August 13, 2021 at 21:20 UTC, a magnitude 4.2 intermediate depth earthquake struck 216 km SE of Sarangani, Philippines, at a depth of 91.3 km and coordinates 4.0932°, 126.9166°.
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
126.9166°E
Technical Information
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Common Questions
How strong was the magnitude 4.2 earthquake near Sarangani, Philippines?
The magnitude 4.2 earthquake that struck 216 km SE of Sarangani, Philippines on August 13, 2021 at 21:20 UTC had a depth of 91.3 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: us7000f36a). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 13, 2021). M4.2 Earthquake 216 km SE of Sarangani, Philippines — August 13, 2021. Retrieved October 29, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000f36a/