M4.3 Earthquake 99 km SE of Pondaguitan, Philippines — January 31, 2021
2021-01-31 20:57:55 UTC (2021-01-31) · approx. 4:57 AM UTC+8 local
On January 31, 2021 at 20:57 UTC, a magnitude 4.3 shallow crustal earthquake struck 99 km SE of Pondaguitan, Philippines, at a depth of 18.7 km and coordinates 5.6376°, 126.7150°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
126.7150°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Pondaguitan, Philippines?
The magnitude 4.3 earthquake that struck 99 km SE of Pondaguitan, Philippines on January 31, 2021 at 20:57 UTC had a depth of 18.7 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000dev3). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 31, 2021). M4.3 Earthquake 99 km SE of Pondaguitan, Philippines — January 31, 2021. Retrieved April 16, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dev3/