M4.7 Earthquake 52 km W of San Nicolas, Philippines — July 23, 2020
2020-07-23 04:41:48 UTC (2020-07-23) · approx. 12:41 PM UTC+8 local
On July 23, 2020 at 04:41 UTC, a magnitude 4.7 shallow crustal earthquake struck 52 km W of San Nicolas, Philippines, at a depth of 35.0 km and coordinates 14.9057°, 119.5932°.
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 Philippines, a region characterized by the Manila Trench and Philippine Trench subduction systems, where the Philippine Sea Plate overrides the Eurasian Plate. The nearest mapped fault system is the Philippine Fault. View all earthquakes in Philippines.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
119.5932°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake near San Nicolas, Philippines?
The magnitude 4.7 earthquake that struck 52 km W of San Nicolas, Philippines on July 23, 2020 at 04:41 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 14.9057°, 119.5932°, which is 52 km W of San Nicolas, Philippines. View all earthquakes in Philippines.
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 Philippines had earthquakes this big before?
The largest recorded earthquake in Philippines was the M8.0 Mindanao earthquake of August 17, 1976. Today's magnitude 4.7 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000b2fu). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 23, 2020). M4.7 Earthquake 52 km W of San Nicolas, Philippines — July 23, 2020. Retrieved October 3, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b2fu/